The present invention relates to a body support unit and related components.

An improved body support platform (such as a bed) was disclosed by the inventor in WO2012/049481 , the content of which is incorporated herein in its entirety. The body support platform disclosed in the publication generally comprises a plurality of columns, each column comprising a stack of fluid-fillable substantially spherical resilient cells (e.g. balls). Each ball of a respective column is physically and fluidly connected to the adjacent ball(s) within said column, such that a column may be compressed substantially independently of a neighbouring column. A base provides a primary fluid reservoir and the columns are arranged in an array across the base. The columns are connected to the base such that the lowermost ball of each respective column is directly fluidly connected to the primary fluid reservoir. The uppermost ball of each respective column collectively define a body support surface.

The body support platform of WO2012/049481 has significant advantages over a conventional mattress. For example, since the body support platform is comprised of individual columns of balls, each column acts substantially independently of the other. Further, the columns or even the individual balls can be removed from the body support unit, either for cleaning, maintenance or replacement. Still further, the behaviour (e.g. firmness etc) may be altered by configuring individual balls or columns.

WO2012/049481 discloses arranging a plurality of columns into a plurality of independent body support units. In figure 1 of W02012/049481 , the units are depicted with different shading, each unit having 12 columns. The body support units are arranged 3 units wide and 5 units long, to form a body support platform. The supply of fluid to each of the body support units (and thus the component columns and cells) may be controlled individually or in groups of units. Consequently, a network of flexible conduits is required, connecting the fluid reservoir of each or a group of respective body support unit to a fluid supply via a respective control valve. A network of discrete fluid supply conduits increases manufacturing costs and complexity, both during manufacture and assembly. Undesired noise is also a factor, during operation.

The present invention comprises various improvements and modifications to this known body support platform and related components.

Air supply distribution unit

Accordingly, the present invention provides a body support unit for a body support platform according to the appended claims.

In one embodiment, the body support unit comprises an air supply distribution unit and a plurality of columns of fluid-fillable cells fluidly connectable to the air supply distribution unit, the air supply distribution unit comprising a base having an upper surface; and an air supply manifold having a lower surface provided with a plurality of networked air supply channels, and an upper surface provided with a plurality of air supply outlet ports fluidly connected through the air supply manifold to a respective air supply channel, wherein the columns are fluidly connectable to the air supply outlet ports, the air supply distribution unit configured such that when the air supply manifold is arranged on the upper surface of the base, a plurality of fluidly independent networks of air supply ducts are formed, each to collectively supply air to a predetermined number of columns through the air supply outlet ports. Preferably, the base comprises a plurality of air supply inlet ports, each for fluid connection with a respective air supply duct.

Conveniently, the plurality of air supply inlet ports are provided adjacent one end of the base.

Advantageously, the lower surface of the air supply manifold further comprises at least one air supply runner, to fluidly connect an air supply channel with the respective air supply inlet port in use.

Preferably, the lower surface of the air supply manifold and the upper surface of the base are substantially planar.

Conveniently, further comprises a gasket positioned between the air supply manifold and base, to fluidly seal the air supply ducts.

Advantageously, the lower surface of the air supply manifold is provided with a plurality of ventilation channels to form a plurality of ventilation ducts when arranged on the base, and wherein the upper surface of the air supply manifold is provided with a plurality of ventilation outlet ports connected through the air supply manifold to a respective ventilation channel, wherein the ventilation outlet ports communicate with the volume surrounding the columns, in use.

Preferably, the base further comprises a plurality of ventilation inlet ports, each for fluid connection with a respective ventilation duct.

Conveniently, the body support unit comprises four independent networks of air supply ducts. Advantageously, the body support unit further comprises at least one stack tie, to restrain relative movement of the columns in use.

Preferably, the upper surface of the air supply manifold is provided with a plurality of anchor points for connection to one or more stack ties, in use.

Conveniently, the perimeter of the lower surface of the air supply manifold is provided with a lip, to at least partially receive the perimeter of the upper surface of the base therein.

Advantageously, the body support unit comprises a cover which, in use, substantially surrounds the plurality of columns.

Preferably, the cover is attachable to the base.

Conveniently, the edge of the cover is retained between the perimeter of the air supply manifold and the base.

Advantageously, the air supply manifold comprises expanded polypropylene.

Preferably, at least part of the surface of the air supply manifold is coated.

Conveniently, the air supply outlet ports comprise a spigot anchored into the air supply manifold.

Advantageously, the lower surface of the base is provided with at least one support leg. Preferably, the body support unit, further comprises an air supply unit, to supply air to the air supply ducts in use.

Conveniently, the air supply unit connects to the air supply inlet ports provided on the base.

Advantageously, at least one valve is arranged in a channel.

Preferably, the body support unit further comprises a control circuit embedded in at least part of the air distribution unit.

Conveniently, the plurality of networked air supply channels are provided on an insert which is arranged in an outer housing of the air supply manifold.

Advantageously, the body support platform comprises two body support units and a single air supply unit connected to the respective air supply inlet ports of each base of the air supply units.

The present invention further provides a method of assembling a body support unit, comprising: providing an air supply distribution unit comprising a base having an upper surface and an air supply manifold having a lower surface provided with a priority of networked air supply channels, and an upper surface provided with a plurality of air supply outlet ports fluidly connected through the air supply manifold to a respective channel providing a plurality of columns of fluid fillable cells; and fluidly connecting the columns to the air supply outlet ports, wherein the air supply distribution unit is configured such that a plurality of independent networks of air supply ducts are formed, each to collectively supply air to a predetermined number of columns through the air supply outlet ports.

Any of the embodiments of the present invention are suitable for use with corresponding components of the arrangement disclosed in WO2012/049481. Embodiments of the present invention are also suitable for use with the inventions disclosed in the applicant's co-pending US provisional applications 61/608931 , 61/608894, 61/610246, 61/618135, 61/648902, 61/644652, the contents of which are incorporated herein in their entirety.

Embodiments of the present invention will now be described by reference to the accompanying drawings in which:

Figure 1 illustrates an exploded view of a body support unit embodying the present invention;

Figure 2 illustrates the lower surface of the air supply manifold;

Figure 3 illustrates a cross section along line A-A of figure 2;

Figure 4 illustrates a cross section along line B-B of figure 2;

Figure 5 illustrates a spigot of an embodiment of the present invention;

Figure 6 illustrates the anchor points provided on the upper surface of the air supply manifold of an embodiment of an invention;

Figure 7 illustrates the underside of the base; Figure 8 illustrates an exploded view of a body support platform embodying the present invention;

Figure 9 schematically illustrates a projector for use with the present invention;

Figure 10 schematically illustrates the connection of a projector to a body support platform;

Figures 1 1a and 1 1 b show further possible arrangements of the projector, attached to the headboard of a body support platform;

Figure 11 c illustrates an alternative embodiment of a projector

Figures 12a to 12c schematically illustrate a user interface for use with the present invention;

Figures 13a and 13b illustrates a drawer unit for use with the present invention;

Figure 14 illustrates a user interface embodying the present invention; and

Figures 15 to 18 illustrate a partial cross-section of the air supply manifold of other body support units embodying the present invention. Figure 1 illustrates an exploded view of a body support unit 1 embodying the present invention. The body support unit 1 is one of two body support units 1 which together define a part of a body support platform 2 (figure 8) to be described later.

The body support unit 1 comprises an air supply distribution unit 3 and a plurality of columns 4 of fluid-fillable cells 5 which are fluidly connected to the air supply distribution unit 3. In the embodiment shown, there are three cells per column. This is not essential. There may be more or fewer cells. In one embodiment, there may be a single cell provided, rather than a column or cells. The cell(s) is preferably substantially spherical, at least at rest, but may be cylindrical. Whatever the arrangement, the cell(s) provide a body support member.

The air supply distribution unit 3 comprises two components: an air supply manifold 6; and a base 7.

The air supply manifold 6 has a lower surface 8 and an upper surface 9. Spigot

The upper surface 9 of the air supply manifold 6 is provided with a plurality of air supply outlet ports 10 for fluid connection with the base 11 of the columns 4. In the figures shown, there are ninety (90) air supply outlet ports 10, although any number may be provided. In one embodiment, each air supply outlet port 10 is defined by a spigot 12 (shown in figure 5) which is inserted into the air supply manifold 6. The spigot 12 may be inserted into an aperture provided in the air supply manifold 6, or it may be formed integrally with the air supply manifold 6 during manufacture of the air supply manifold 6. Preferably, the air supply manifold 6 comprises expanded polypropylene. Conveniently the air supply manifold 6 comprises ARPRO type EPP material.

Preferably, the air supply manifold 6 is a single, unitary, item, formed in one piece.

With reference to figure 5, the spigot 12 is generally cylindrical having a through hole 25. The top of the spigot 12 comprises a radial flange 26 for connection with the base 11 of a column 4 in use. The base 1 1 of the column 4 is shown in cross- section.

The lower part of the spigot 12 comprises a plurality of anchoring ribs 27 which engage with an aperture in the air supply manifold 6 to define an air supply outlet port 10. In one embodiment, the anchoring ribs 27 may be resilient and the spigot 12 is insertable into the corresponding aperture provided in the top surface of the air supply manifold 6. The resiliency of the anchoring ribs 27 serves to deform the anchoring ribs 27 to retain the spigot 12 within the aperture.

Alternatively, in a preferred embodiment where the air supply manifold 6 is moulded (e.g. by injection), the spigots 12 may be arranged in the mould prior to injection such that, after injection of the material, they are permanently anchored into the material of the air supply manifold 6. In such an embodiment the anchoring ribs 27 are preferably substantially rigid and removal of the spigots 12 from the air supply manifold 6 is substantially prevented, by virtue of the material of the air supply manifold 6 having flowed into the spaces between the anchoring ribs 27 and retaining the spigot 12 therein.

Conveniently, the radial flange 26 of the spigot 12 provides a substantially rigid and secure connection point to which the column can be attached in use. The column 4 is preferably formed of resilient material and the base 1 1 includes a neck which is stretched over the flange 26 in use to retain the column 4 on the spigot 12.

The top part of the spigot 12 comprises a generally cylindrical boss 60 having an annular depression 61. When the base 11 of the column 4 is positioned on the spigot, as illustrated in figure 5, a ring 62 is preferably applied, to retain the column on the spigot 12. The ring 62 is shown in cross-section in figure 5. Preferably, the ring 62 locates within the depression 61. In one embodiment, the ring 62 may positively clamp the base 11 of the column 4 against the boss 60. In another embodiment, the ring 62 does not apply a positive force on the base 11 of the column 4. Instead, the ring 62 is arranged to constrain expansion of the base 1 1 of the column 4 in the case of an increased pressure being experienced in the column 4. With reference to figure 5, if a high pressure is present in the column 4, the diameter of the base 11 of the column may be caused to increase, against the resiliency of the material of the column 4. If the diameter increases to, or close to, the diameter of the flange 26, the pressure could cause the column 4 to become detached from the spigot 12. The provision of the ring 62 prevents, or at least limits, this increase of the diameter of the base 1 1 of the column 4. Even if the ring 62 becomes dislodged from the depression 61 , expansion of the base 11 of the column 4 would likely cause the ring 62 to travel towards the flange 26. The ring would effectively then clamp the base 11 of the column against the flange 26, preventing or reducing the risk of the column 4 separating from the spigot 12.

Air channels

The lower surface 8 of the air supply manifold 6 is provided with a plurality of networked air supply channels 13 (see figure 2). The air supply outlet ports 10 provided on the upper surface 9 of the air supply manifold 6 are fluidly connected, through the air supply manifold 6, to a respective channel 13 on the lower surface 8 of the air supply manifold 6.

As shown in figure 2, each air supply outlet port 10 is fluidly connected to at least one neighbouring air supply outlet port 10 by an air supply channel 13.

In figure 2, a plurality of independent (i.e. non-connected) networks of air supply channels 13 are defined. Thus, a given air supply channel 13 fluidly connects a predetermined number of air supply outlet ports 10 together, but does not directly fluidly connect the air supply channel 13 to any other air supply channels 13 or air supply outlet ports 10. In use, the supply of air to a given air supply channel 13 will only supply that air to a predetermined number of columns 4 associated with that air supply channel 13.

In one embodiment, the cross-section of the channel 13 may be substantially square. In another embodiment, the cross-section 15 may be substantially semi-circular. The cross-sectional shape of the channel 13 is not particularly important.

In figure 2, four independent networks (zones) of air supply channels 13 and air supply outlet ports 10 are defined. In the figures, the first network extends across the entire length of the right hand side of the underside of the air supply manifold 6. This network fluidly connects thirty six (36) air supply outlet ports 10 to one another by means of a network of interconnected air supply channels 13.

The second, third and fourth air supply networks are provided along the length of the left hand side of the air supply manifold 6. Each of the second, third and fourth networks are equal in size, and fluidly connect eighteen (18) air supply outlet ports 10 to one another. Each of the air supply channels 13 further comprise an air supply runner 14, which each extend to a connection area 45 on the underside of the air supply manifold 6.

The upper surface 9 of the air supply manifold 6 is preferably further provided with a plurality of ventilation outlet ports 15, for supplying ventilation, in use, to the volume surrounding the columns 4.

The lower surface 8 of the air supply manifold 6 further comprises a plurality of ventilation channels 16, which fluidly connect at least some of the ventilation outlet ports 15 to one another, through the air supply manifold 6. In figure 2, there are four distinct ventilation channels 16. In another embodiment, each of the ventilation channels 16 may be fluidly connected to one another by means of additional channels (not shown) on the air supply manifold 6.

Figure 3 illustrates a cross-section of the air supply manifold 6 of figure 2 along line A-A. The cross-section of figure 3 illustrates the plurality of air supply channels 13, and the air supply runner 14 of the first air supply network. Although not on the plane of the cross section A-A, figure 3 also illustrates the air supply outlet ports 10. Principally, the cross section of figure 3 illustrates the ventilation channels 16 and ventilation outlet ports 15.

Figure 4 illustrates a cross-section along line B-B of the air supply manifold 6 shown in figure 2. Here, a plurality of air supply outlet ports 10 and air supply channels 13 are illustrated in the plane of the cross section. Also shown in the cross section are the four ventilation channels 16, and the air supply runner 14 of the first air supply network. As best shown in figures 3 and 4, the perimeter 17 of the lower surface of the air supply manifold is provided with a lip 18, to receive the base 7 therein.

With reference to figure 1 , when the body support unit 1 is assembled, (preferably by the base 7 being received within the lip 18 of the air supply manifold 6) the lower surface 8 of the air supply manifold 6 contacts the upper surface 18 of the base 7. Preferably, the lower surface 8 of the air supply manifold 6 and the upper surface 18 of the base 7 are substantially planar.

When the air supply manifold 6 is arranged on the base 7, the plurality of channels 13 are closed, by abutment with the upper surface 18 of the base 7, to form a plurality of ducts. The ducts are for collectively supplying air to a predetermined number of columns 4 through the air supply outlet ports 10 and ventilation to the space between columns 4 through the ventilation outlet ports 15.

In one embodiment (not shown), a gasket is positioned between the lower surface 8 of the air supply manifold 6 and the upper surface 18 of the base 7, to fluidly seal the air supply ducts. The gasket may be resilient. Preferably the gasket is made of silicone.

As will be noted from figure 1 , when the plurality of columns 4 are fluidly attached to each of the air supply outlet ports 10, they collectively define an upper support surface 19.

In the embodiment shown in figure 1 , two stack ties 20 are also provided, to restrain relative movement of the columns 4 in use. The stack ties 20 releaseably connect to each column 4 at a point 21 between the respective cells 5 of each column 4, and serve to prevent - or at least restrict - any horizontal separation of the columns 5 from one another.

Further, in one embodiment, a cover 22 is provided which, in use, substantially surrounds the plurality of columns 4. The free edge 23 of the cover is preferably attachable to the air supply distribution unit 3. In one embodiment, the edge 23 of the cover 22 may be attachable to the base 7. In another embodiment, the edge 23 of the cover 22 is retained between the lip 18 of the air supply manifold 6 and the perimeter base 7. Accordingly, during assembly of the air supply distribution unit 3, the edge 23 of the cover 22 may be inserted into the space between the air supply manifold 6 and the base 7, before the air supply manifold 6 and base 7 are brought into engagement with one another. The engagement of the two components 6, 7 may then clamp the cover 23 therebetween.

Preferably, in use, a bed sheet to be used with the body support platform may also be captured by a feature of the air supply distribution unit 3.

With reference to figure 6, a plurality of stack tie anchor points 28 are illustrated, which are attached to or embedded into the upper surface 9 of the air supply manifold 6. The stack ties 20 as illustrated in figure 1 may then be anchored to the stack tie anchor points 28 in use. Sixteen stack tie anchor points 28 are illustrated, although more or less may be adopted. Preferably, as with the spigots 12, the anchor points 28 are overmoulded when manufacturing the air supply manifold 6, so that they are embedded within the material of the air supply manifold 6 and firmly anchored thereto.

Figure 7 illustrates the underside 29 of the base 7 of figure 1. The base 7 comprises an outer frame 30 having strengthening ribs 31 therein. Attachment points 32 for support legs 33 are provided in two of the corners of the underside 29 of the base 7, for attachment with support legs 33 (shown in figure 8).

Additionally, as shown in figures 1 and 7, the upper surface 18 of the base is provided with a plurality of inlet ports 35, 36, for fluid connection to either the air supply channels or ventilation channels 16. When the air supply manifold 6 is arranged on the base 7, air supply inlet ports 35 fluidly connect with the end of the air supply runners 14 associated with the network of air supply channels 13. Ventilation inlet ports 36 fluidly connect with the ventilation channels 16 associated with the ventilation outlet ports 15.

Generally, the air supply inlet ports 35 and ventilation inlet ports 36 provided on the upper surface 18 of the base 6 are positioned so as to be arranged adjacent the connection point 45 on the lower surface 8 of the air supply manifold 6, when the air supply distribution unit 3 is assembled.

When the air supply manifold 6 is arranged on top of the base 7, each of the four ventilation inlet ports 36 on the base 6 fluidly connect with a respective one of the four ventilation channels 16 on the lower surface 8 of the air supply manifold 6. Similarly, the four air supply inlet ports 36 (shown in figure 1) fluidly connect with a respective one of the four air supply channels. With reference to figure 2, each of the air supply inlet ports 36 fluidly connect with the distal end of a respective air supply runner 14.

Preferably, the base 7 is manufactured from expanded polypropylene. Advantageously, the base is substantially rigid. Where both the base and the air supply manifold are manufactured from expanded polypropylene, different grades of expanded polypropylene may be used. For example, the expanded polypropylene used to manufacture the base may be denser than that used to make the air supply manifold.

Figure 8 illustrates an exploded view of a body support platform 2 embodying the present invention. The body support platform 2 comprises two body support units 1 , such as that shown in figure 1 , and an air supply unit 37. In use, the body support platform 2 is supported by six support legs 33. Two support legs 33 attach to the corners 32 of each base 7; and two further support legs 33 attach to either side of the air supply unit 37.

The centre of the air supply unit preferably includes a longitudinal channel for receiving the lip 18 of each base 7.

In one embodiment, a control circuit is provided in the air distribution unit, for example in the optional gasket or embedded in the air supply manifold 6. The control circuit may distribute control instructions around the body support unit. In one embodiment, valves may be provided in the air supply channels 13 or ventilation channels 16, to control the distribution of air. The control circuit preferably connects to the valves to control their operation. In one embodiment, the valves are shaped so as substantially to correspond to the cross-section of the channel/duct into which they are positioned, so as to form a fluid seal between the body of the valve and the channel/duct.

The air supply unit 37 comprises a plurality of blower outlet ports 38 for connection with each of the inlet ports 35, 36 on the base 7. In this embodiment, a single air supply unit 37 supplies air to both of the body support units 1. In another embodiment, there may be only a single air supply unit 37 for each body support unit 1 , and it may be arranged for connection in the centre of the base 7 and body support unit 1. In such an embodiment, air supply runners 14 in the lower side 8 of the air supply manifold 6 may not be required.

The air supply unit 37 selectively supplies air to one or more of the plurality of ports 35, 36. Accordingly, the amount of air being supplied to any of the air supply networks 13 or ventilation channels 16 may be selectively controlled using the air supply unit 37.

With reference to figure 8, when two of the body support units 1 are arranged into a body support platform 2, the body support platform 2 will present eight independently controllable zones of columns 4. A single zone is defined at each end of the body support platform 2, substantially extending across the width of the body support platform 2. In use, one of these zones is positioned under a user's head and the other of these zones is positioned under a user's feet or lower legs. In between these distal zones of the body support platform 2, six independently controllable zones are provided (three from each body support unit 1). In use, these zones are positioned beneath a user's body.

With reference to Figure 8, the respective air distribution units 3 of each body support unit 1 may be hinged to one another along one side. For example, in a bed configuration, both body support units 1 may be substantially co-planar. However, the body support units may be rotated about the axis of the hinge, into a seat configuration.

Each of the eight zones is independently controllable by the air supply unit 37 and associated control system. Accordingly, the user can adjust the pressure in each zone of columns, to increase or decrease the firmness of the zone, as desired. One or more zones may be controlled collectively. Control valves

In one embodiment, as briefly discussed above, the supply of fluid/air to each of the individual zones is controllable by a valve mechanism in the air supply distribution unit 37. As shown in Figure 8, the air supply unit 37 comprises as many blower outlet ports 38 as there are zones. Each blower outlet port 38 may be controlled by a valve, preferably a variable valve, within the air supply unit which can supply a predetermined volume of air through the blower outlet port 38 in response to a control signal. Rather than an individual valve per blower outlet port, there may be a single multiplexing valve in the air supply unit 37.

In another arrangement, the invention provides an air distribution unit for a body support platform having an upper surface provided with a plurality of air supply outlet ports, each for connection to an inflatable body support member (e.g. a column of cells), and a plurality of air supply channels, wherein each air supply outlet port is fluid connected to an air supply channel, the air distribution unit being connectable to an air supply and further comprising a plurality of valves arranged within the air supply channels, the valves being configured to deliver air from the air supply to a predetermined number of air supply channels, so as to define a plurality of controllable zones of air supply outlet ports.

Accordingly, in comparison to the arrangement shown in figure 2 having a separate connection port provided at the end of each air supply runner 14, all the support runners of a given air supply manifold may instead be fluidly connected to a single connection port which, in use, receives air from a common air supply. In this alternative arrangement, an air supply valve is provided within each air supply runner 14, to selectively control the supply of air to the corresponding air supply network. As a result, the valves create controllable zones, each locally controlled by the valve, so as to control the flow of air to a given number of inflatable support members (e.g. columns) in use.

Control of firmness of body support members

In use, the firmness of the body support members (e.g. columns of cells) connected to each independent network of supply ducts (zones) is controllable. That is to say, the firmness of each of the body support members within a given zone is controllable. If a user finds that the firmness of one zone is too low, then an instruction is sent to the control system to inflate the support members of that zone until a desired (and/or predetermined) firmness is reached.

Preferably, when the current pressure in a body support member (or group of support members within a zone) is lower than desired, additional air is pumped into that body support member(s) so as to increase the pressure within that/those member(s). As a result, the firmness of the body support member(s) increases.

Similarly, when the current pressure in a given body support member (or group of body support members within a zone) is higher than desired, air is allowed to escape from that body support member so as to decrease the pressure within that body support member(s). As a result, the firmness descreases.

Preferably, a pressure sensor is fluidly connected to a body support member or group of support members, so as to detect the fluid pressure within the body support member (s). Preferably, the pressure sensor continually detects the pressure within the body support member(s), to ensure that the desired pressure is reached and subsequently maintained. Preferably, each zone of controllable body support members is associated with a dedicated pressure sensor. The pressure sensors are preferably connected to a central control system.

When the user and/or control system determines that pressure in a body support member(s) must be reduced from its current level, in one embodiment a valve is opened to release some of the air in the body support member. The valve is closed when the desired pressure has been reached. When releasing air from the body support member, the rate of the pressure release is preferably controlled, such that the valve can be closed when the desired pressure is reached. Preferably, the rate of pressure release is such that the desired pressure can be reached within a reasonable period of time. Preferably, the pressure reaches a desired pressure within 5 seconds, more preferably, 3 seconds.

The rate of decrease in the air pressure is due in part to the size of the release valve. If the release valve has a relatively small opening, pressure release may be gradual.

When a user is laying on the arrangement, their body weight is transferred to the body support member(s) which, in turn, raises the pressure within the body support member(s). Releasing air from a body support member, on which a user is laying, through a valve may occur more quickly due to the increased pressure caused by the user.

In one embodiment, the pump which is used to supply air to the body support member(s), may also be configured to pump air from the body support members. A benefit of this arrangement is that a desired, lower, pressure may more quickly be reached, due to the active pumping of air from the body support members by the pump. It is envisaged that a user may wish to reduce the pressure (firmness) of one body support member or group of support member, whilst increasing the pressure (firmness) of another body support member or group of body support members. Rather than vent the air from one body support member(s) and pump fresh air into the other body support member(s), at least some of the unwanted air from one body support member(s) may instead be provided to the other body support member(s), without needing a pump. Preferably, the pressure difference between the two body support members (or groups of body support members) causes air to flow from one to another. When the desired pressure in at least one of the body support members (or group of body support members) is reached, a corresponding control valve may be closed, to avoid the two body support members (groups) reaching pressure equilibrium. Additional air may be provided by the pump, in the case where a higher pressure is required (which cannot be supplied by the unwanted air from the other body support member(s).

In the event of a power failure and/or a fault with the air supply pump, the arrangement is preferably provided with an emergency air inlet, to which a manual pump may be attached. The pressure, and thus firmness, of the body support members may then manually be adjusted by a user, before power can be restored and/or any faults corrected.

Monitoring user parameters

In one embodiment, the arrangement of the invention is operable to detect at least one user parameter, preferably a user's breathing pattern and/or heart rate. In one embodiment, at least one body support member is associated with a movement sensor. The movement sensor may comprise a vibration sensor or a pressure sensor.

The output of the vibration sensor or/and pressure sensor is monitored over time. As the user breathes, the physical movement of the user's chest causes small fluctuations in the pressure applied by the user's chest on a cell beneath. These fluctuations, although small, can be detected by the vibration sensor. Larger vibrations may also be picked up, such as those generated by the user moving. However, the output signal can be filtered to remove non-cyclical data, so as to isolate the vibrations which are determined to be caused by the user's breathing pattern. The filtered data may then be recorded, to monitor the user's breathing. When a user is asleep, their breathing pattern is known to change. Moreover, the breathing pattern is known to change depending on how deep a sleep the user is in. The filtered data can therefore be used to analyse the user's sleeping pattern.

The vibration sensor may also detect smaller fluctuations, resulting from the user's pulse. These very small fluctuations may be extracted from the data stream. Since the frequency of a user's breathing is much lower than their pulse, the two data streams can be isolated through calibrating the associated data processor. For example, the user's breathing may be identified as falling within a window of a first frequency range, and a user's pulse identified as falling within a window of a second frequency range.

As with their breathing pattern, monitoring a user's heart rate is particularly beneficial, especially in the medical field. A user can be continuously monitored when using the arrangement, without having to wear any physically invasive monitoring devices (cuff, finger sensor etc). The same information can be detected using a pressure sensor fluidly connected to the body support member(s). The user's breathing and/or pulse cause small fluctuations in the pressure of the cell of the support member with which they are in contact. These fluctuations in pressure are measured by the pressure sensor, and the data can be filtered and processed to extract the user's breathing pattern and/or pulse.

The body support platform 2 of figure 8 is preferably dimensioned for use as a single bed. A larger (e.g. double) bed may be configured using larger body support units 1 (e.g. including more columns or columns of larger dimensions), or by arranging four body support units 1 together (thus providing sixteen independent zones).

As described above, preferably at least the air supply manifold 6 is manufactured from expanded polypropylene (EPP). The air supply manifold 6 is preferably injection moulded. Given the nature of expanded polypropylene, it may not be entirely impervious to air. Accordingly, at least some air may pass through the material, particularly when pressurised. Nevertheless, manufacturing the air supply manifold 6 from expanded polypropylene is particularly advantageous as it significantly reduces the weight of the arrangement. Moreover, the use of expanded polypropylene has particularly beneficial acoustic properties.

When the air supply manifold is manufactured from expanded polypropylene, the outer surfaces are preferably coated with a fluid impermeable (or substantially fluid impermeable) outer layer. The application of the outer layer may be performed at the same time as manufacturing the air supply manifold 6. The outer layer may therefore be at least partially interstitially bonded with the sub-surface expanded polypropylene layer. The outer layer may be comprised of a skin of polypropylene created during manufacturing.

In another embodiment, the air supply manifold comprises a trap and a support structure. The tray is provided with the plurality of networked air supply channels. Preferably, the tray is thermo-formed. The material of the tray is preferably substantially impervious to air. In one embodiment, the tray is relatively thin, and may be flexible.

Preferably, the tray is bonded/adhered to a support structure. The support structure may be pervious to air. The support structure is intended primarily to support they tray, to provide structural integrity to the air supply manifold. Whether the support structure is pervious to air, or not, is not of importance. The support structure may comprise foam. In another embodiment, the support structure comprises strengthening ribs provided on the back of the tray. In one embodiment, the tray is bonded to a support structure.

In one embodiment, the air supply manifold provided with the plurality of networked air supply channels is formed of expanded polypropylene, having a core comprising a foam, and at least the surface defining the air supply channels formed of a fluid impermeable skin.

In embodiments described herein, the plurality of networked air supply channels are disclosed as being provided on the lower surface of the air supply manifold, which mates with the planar upper surface of the base to form air supply ducts. The present invention encompasses the opposite arrangement, wherein the plurality of networked air supply channels are provided on the upper surface of the base, which mates with the planar lower surface of the air supply manifold to form air supply ducts. It is also envisaged that both the lower surface of the air supply manifold and the upper surface of the base may be provided with air supply channels which together define air supply ducts. A benefit of this arrangement is that the air supply ducts may be larger in cross-sectional area. In one embodiment, the air supply channels on one surface are dissimilar to those on the other surface. When the two surfaces are mated, an effectively 'two-layer' network of air supply ducts can be formed.

In one embodiment, the air supply distribution unit 3 may first be formed and assembled before applying a coating around the entire air supply distribution unit. That is to say: the air supply manifold 6, preferably formed of expanded polypropylene, is arranged on top of the base 7, and this assembled arrangement (i.e. the air supply distribution unit 3) is then coated in a substantially air impermeable layer. A benefit of this arrangement is that the interface of the air supply manifold 6 and base 7 is hermetically sealed.

Method of assembly

In another embodiment, the present invention provides a method of assembling a body support unit, comprising: providing an air supply distribution unit comprising a base having an upper surface and an air supply manifold having a lower surface provided with a priority of networked air supply channels, and an upper surface provided with a plurality of air supply outlet ports fluidly connected through the air supply manifold to a respective channel;

providing a plurality of columns of fluid fillable cells; and

fluidly connecting the columns to the air supply outlet ports,

wherein the air supply distribution unit is configured such that a plurality of independent networks of air supply ducts are formed, each to collectively supply air to a predetermined number of columns through the air supply outlet ports. Preferably, the method further comprises providing at least one stack tie, to restrain relative movement of the columns in use.

In one embodiment, the method further comprises providing a cover over the body support unit.

Figure 15 illustrates a partial cross-sectional view of an air supply distribution unit 300 of another body support unit embodying the present invention. The air supply distribution unit 300 comprises a lower base member 302 having a planar upper face 306 and an upper base member 301 having a planer lower face 307. A plurality of continuous beads 308 of material are provided between the lower base member 302 and upper base member 301 , extending from the respective planar upper face 306 and respective planar lower face 307, to define a plurality of fluidly independent networks of air supply ducts 309 between the lower 302 and upper 301 base members.

It should be noted that the upper base member 301 largely corresponds to the air supply manifold 6 of the embodiment shown in figure 1 , save for the fact that the upper base member 301 does not include a plurality of air supply channels 13 on its base. The lower planar face 307 of the upper base member 301 is preferably entirely planar, without any channels.

Rather, the network of air supply ducts 309 is defined by the provision of the beads 308 of material.

Preferably, the upper 301 and lower 302 base members are spaced apart by a predetermined distance, so as to ensure a uniform depth of the air supply ducts 309 defined therebetween. In the air supply distribution unit 300 shown in figure 15, both the upper 306 and lower 307 planar faces of the base members 301 , 302 are provided with spacers 303 extending from the surface. The spacers 303 are of a predetermined height so as to ensure a minimum spacing between the planar upper face 306 of the lower base member 302 and the lower planar face 307 of the upper base member 301 in use.

The provision of the spacers 303 assist in the assembly process of the air supply distribution unit 300.

To assemble the air supply distribution unit 300, a plurality of continuous beads of material 308 are applied to the upper surface 306 of the lower base member 302. The upper base member 301 is then positioned on top of the lower base member 302. The size of the bead 308 of material, and the depth of the spacers 303, are configured such that the positioning of the upper base member 301 on the lower base member 302 causes the bead of material to make sealing contact with the lower surface 307 of the upper base member 301. The spacers 303 prevent the weight of the upper base member 301 compressing, and therefore collapsing, the beads 308 of material.

The air supply distribution unit 330 shown in figure 16 corresponds to that shown in figure 15, although the spacers 333 are only provided on the lower planar surface 337 of the upper base member 331.

The spacers 303, 333, are preferably "pin-like" (cylindrical) and may be provided across the respective upper and lower faces of the base members. In figures 15 and 16, the beads 308, 338, are shown to envelope the spacers 303, 333, but this is not essential. The provision of a spacer within an air supply duct 309, 339 defined by the beads 308, 338 of material will not affect the supply of air therethrough. Nevertheless, the arrangement of at least one spacer 303, 333 within the bead 308, 338 of material helps to "key" the upper and lower base members together.

In figure 17, the air supply distribution unit 360 does not include any spacers. In this arrangement, the viscosity or other mechanical properties of the bead 368 may be such that, during manufacture, the collapse of the upper base member 301 onto the lower base member 302 is avoided. Alternatively or additionally, a temporary spacer may be provided during the manufacturing process, arranged between the upper 361 and lower 362 base members.

In one embodiment, the invention provides a body support unit for a body support platform, the body support unit comprising an air supply distribution unit and a plurality of fluid-fillable body support members fluidly connectable to the air supply distribution unit, the air supply distribution unit comprising: a lower base member having a planar upper face; and an upper base member having a planar lower face, wherein a plurality of continuous beads of material are provided between the lower base member and upper base member, extending from the respective planar upper face and respective planar lower face, to define a plurality of fluidly independent networks of air supply ducts between the lower and upper base members, wherein the upper base member further comprises an upper surface provided with a plurality of air supply outlet ports fluidly connected through the upper base member to a respective air supply channel, each air supply outlet port fluidly connected to a body support member.

In figure 18, the spacers 393 are provided in the form of granules, preferably spheres, within the bead 398 of material. Preferably, when the material is in a molten state, a plurality of the granules 393 are disposed therein. The diameter of the granules 393 are configured such that they ensure a minimum spacing between the upper and lower base members. Projector

Figure 9 schematically illustrates a projector 50 according to an embodiment of the present invention. The projector comprises a mounting 51 , a flexible neck 52 and a projecting unit 53. The flexible neck 52 is arranged between the mounting 51 and the projecting unit 53. The projecting unit 53 comprises a display unit 54 and at least one lens 55. The control mechanism and/or the input to the projection unit 53 may be located remotely. The relative spacing between the display unit 54 and lens 55 may be adjustable.

The location of the projected image may be altered by adjusting the angle of the projection unit 53, by bending the flexible neck 52.

Figure 10 schematically illustrates a preferred arrangement of the projector on the body support platform (e.g. bed). The projector is provided on one side of the body support platform and is preferably generally arranged to project an image onto the ceiling, above the user on the body support platform.

Other flexible/retractable arrangements for use with the projection unit are applicable.

Figures 11 a and 1 1 b show an alternative arrangement, wherein the projection unit may be attached to the headboard of the body support platform.

Although a swan neck is adopted in the embodiment shown in figures 9 - 11 b, any other form of flexible armature could be used. Preferably, the armature allows the user to move between a stowed position and a deployed position. Conveniently, the armature allows for adjustment during use, when in the deployed position. Figure 11 c illustrates a projector connected to an articulated armature, mounted to the base of the headboard. When in the stowed position, the projector and articulated armature are stowed in a channel provided in the edge of the headboard, so that the armature is substantially flush with the edge of the headboard.

In an alternative embodiment of the arrangement shown in Figure 1 1c, the articulated armature is connected to the body support platform. There may or may not be an additional headboard. A benefit of providing the armature and projector on the body support platform is that the arrangement is self-contained. A user may install the body support platform for use with their existing headboard.

Conveniently, the projector is powered and controlled by a circuit provided within the body support platform. Preferably, a power and/or control circuit may be formed within the air distribution unit of the body support platform. As described earlier, a control circuit may be included within a membrane provided between the air supply manifold and base. Alternatively, the control circuit may be formed within the surface of the air supply manifold.

The body support platform preferably further comprises a user control interface, to control the projector. In one embodiment, the body support platform includes a connection interface for a control device. The control device may be, for example, a mobile telephone or tablet computer. Connection between the body support platform (e.g. the projector) and the control device may be wireless.

Any connection port, either for connection to a projector and/or control device may be embedded in the body support platform during manufacture. Another aspect of the present invention provides a projector associated with an item of furniture, configured to project an image onto the item of furniture and/or the surface surrounding the item of furniture, wherein at least a part of the projected image is aligned with the item of furniture.

The item of furniture is preferably a body support platform, advantageously a bed.

In one embodiment, the projector is configured to project an image onto the surfaces of the environment in which the bed is located. Preferably, the image projected is aligned with the bed. Preferably, a predetermined element of the image may be sized and configured so as to align with and overlay the outline of the bed. For example, the projector may project an image comprising a 'desert island' and the surround sea. The part of the image representing the desert island may be aligned with the bed, and the part of the image representing the sea projected onto the floor and walls surrounding the bed.

User interface

Another aspect of the present invention provides a user interface associated with a body support platform, comprising a user interface panel mounted on an articulated joint and moveable between a stowed position and a deployed position.

With reference to Figures 12a) to 12b), the body support platform 170 comprises a headboard 171 , which may be of conventional dimensions and appearance. Associated with the headboard 171 are two user interfaces 172, one for each user of the body support platform (a double bed is shown). The user interfaces 172 are mechanically independent of one another. They may both display the same information. Only one user interface 172 may be provided on a single bed. The user interface comprises a user interface panel 173 which is mounted on an articulated arm 174. A first end of the articulated arm 174 is pivotably connected to the headboard 171 and a second end is pivotably connected to the user interface panel 173. The user interface panel 173 can therefore swing away from the headboard 171 such that it is above a user's head (figure 12b). The user can then rotate the user interface panel 173 with respect to the articulated arm 174, to a substantially horizontal position (figure 12c)

When in the stowed position, shown in figure 12a, the user interface panel 173 is stowed within an aperture 175 in the headboard 171 such that the rear surface of the user interface panel 173 is substantially flush with the surface of the headboard 171. The rear surface of the headboard 171 may be provided with the same covering, material or pattern as the headboard 171 , or a deliberately contrasting covering, material or pattern, as desired.

With the arrangement shown in figures 12a to 12c, it is also possible to remove the user interface panel 173 from its stowed position, rotate the panel 173 about its horizontal axis, and push the panel 173 back into the aperture 175, such that the user interface screen (not shown in the figures) is facing outwards from the headboard 173. This allows a user to interact with the user interface panel 173 but without the user interface panel protruding from the headboard 173.

Preferably, the user interface panel 173 comprises an orientation sensor, and is operable to orientate the display accordingly.

In one embodiment, the first end of the articulated joint is pivotably mounted to a carriage which is mounted for linear translation within the aperture in the headboard. This allows for the articulated arm to be of a desired length but still allow the panel to be stowed. The carriage translates within the aperture 175.

In another embodiment, the entire headboard 171 may be connected to the body support platform with an articulated mounting, wherein one or more user interfaces is/are provided on the rear of the headboard 171.

The body support platform may comprise external interfaces, for connection of the user interface to external devices (such as an iPad™ etc).

In one embodiment, the user interface panel may comprise a discrete electronic device (such as tablet computer) which is inserted into a user interface mounting.

It will be appreciated that any or all of the inventions described herein may be used together.

The present invention provides a user interface associated with a body support platform, comprising a user interface panel mounted on an articulated joint and moveable between a stowed position and a deployed position.

Preferably, the user interface is associated with a headboard of a body support platform and is configured such that, when in the stowed position, the user interface panel is stowed within an aperture in the headboard such that the rear surface of the user interface panel is substantially flush with the surface of the headboard.

Preferably, the articulated joint is pivotably mounted at a first end to the headboard, and pivotably mounted at a second end to the user interface panel. Preferably, the first end of the articulated joint is pivotably mounted to a carriage which is mounted for linear translation within the aperture in the headboard.

Preferably, the articulated joint comprises an over-dead centre biasing mechanism, to bias the user interface panel to both of the stowed and deployed positions.

Preferably, the user interface panel comprises an interface for controlling the operation of the body support platform.

Preferably, a headboard comprises two user interfaces.

Figure 14 illustrates a user interface 200 according to the invention, for use with a body support platform according to the invention. The user interface 200 comprises a display screen 201 and a plurality of user controls 202. In one embodiment, the display screen 201 may be a touch screen, with the user controls 202 being defined by a graphical user interface of the display screen 201. The user controls 202 may be configurable. The function assigned to each configurable user control 202 may be displayed adjacent the user control 202 on the display screen 201.

The user interface 200 is mounted on an arm 203. Preferably, the arm 203 is connected at the other end to the body support platform. The arm 203 may be a swan neck-type arm as illustrated in figure 9. Alternatively, the arm 203 may be an articulated arm such as that shown in figure 11 c. Conveniently, the position of the user interface is adjustable, relative to the user.

The user interface 200 is preferably movable between a stowed position and a deployed position. Advantageously, the user interface 200 further comprises a projector element 204, operable to project an image onto a surface. Preferably, the position of the projector element relative to the user interface is adjustable. Both the position of the user interface 200 and the projector may therefore be optimally adjusted according to the user's position and needs.

Preferably, the user interface 200 further comprises a front-facing camera 205. Advantageously, the user interface 200, or associated control system, is operable to process a user's motion (e.g. a hand gesture) to act as an input to the user interface 200. Alternatively or separately, the user interface 200 further comprises a microphone to allow user control via voice commands.

Drawer unit

Another aspect of the present invention provides a bed comprising a frame defining a body support platform, the bed comprising: at least one drawer 160 slidably mounted to the frame 161 and translatable between a closed position in which the drawer 160 is substantially beneath the body support platform 162; and an open position in which at least part of the drawer 160 protrudes from the frame 161 ; and a panel 163 hinged with respect to the frame 161 and rotatable between a closed position in which the drawer 160 is concealed behind the panel 163; and an open position in which the drawer 160 is free to translate with respect to the frame 161.

As shown in figure 13a, the panel is hinged about its lower edge 164 for rotation about a horizontal axis. The position of the hinge and/or mass of the drawer 160 will cause the panel 163 to have a tendency to move towards its open position (figure 13b). Preferably, the hinged panel 163 is biased towards its closed position (figure 13a) by a spring mechanism (not shown).

In one embodiment, rotation of the panel 163 between the open and closed positions is independent to the translation of the drawer 160 between the open and closed positions. However, it will be appreciated that when the panel 163 is in its closed position, translation of the drawer 160 is prevented. Preferably, at least the front surface of the panel 163 is curved.

Preferably, the hinged panel 163 is connected to the drawer 160 such that, as the drawer 160 travels towards its closed position beyond a predetermined point, the panel 163 is urged into its closed position. Preferably, the panel 163, when in the open position, provides a track along which the drawer 160 can travel. The lower edge of the drawer 160 may be provided with one or more wheels or rollers (not shown), which travel along a track or rail provided on the inside surface of the panel.

In one embodiment, the end of the track closest the hinge of the panel 163 comprises a mechanical stop against which the wheel/roller of the drawer 160 abuts.

Accordingly, as the drawer 160 is translated towards its closed position, the wheel/roller abuts against the mechanical stop and causes the panel 163 to rotate upwards into its closed position. Accordingly, the drawer 160 may be closed and the panel hinged to its closed position simply by pushing the drawer 160 into the space beneath the body support platform 162.

Preferably, the state of at least one lighting element 165 is altered when at least one of the drawer and panel are opened and/or closed. The panel 163 may be at least partially translucent so that light from the element 165 may pass through. In another embodiment, the panel itself comprises at least one lighting element. The lighting element may emit light both on the inside and outside of the panel, and/or there may be separate lighting elements on the inside and outside surfaces of the panel respectively. The operation of each of the respective lighting elements may depend on the position of the drawer and or panel.

In one embodiment, a lighting element is provided on the outside surface of the panel and is switched on, creating an ambient light, when the panel is in its closed position. The lighting element projects light on to the floor surrounding the body support platform, creating a relaxing environment.

A lighting element may also be provided on the inside surface of the panel, for lighting the interior volume of a drawer to aid in locating and/or placing items within the drawer unit.

In one embodiment, a projector (such as that schematically shown in figure 9) may be provided in the drawer unit.

In one embodiment, a separate fascia sheet (not shown) may be arranged on the front of the panel 163, so as to adapt the appearance of the drawer arrangement. As a result, where drawers are provided on both sides of a body support platform, the appearance of the body support platform is also adapted. Additional fascia sheets may be provided at the foot of the body support arrangement (where no drawer arrangement is provided), such that the base of the body support arrangement is substantially surrounded by the fascia sheet. In one embodiment, the fascia sheet is removable, and is slidably received within corresponding groove members on the panel 163. The panel 163 may instead be replaced with a frame, which holds the fascia sheet. The fascia sheet may be transparent, translucent opaque etc. The fascia sheet may be a coloured translucent material, such that it transmits light from a light source or projector arranged behind the fascia sheet. The fascia sheets of a body support arrangement may be provided with themed images, for example cartoon characters.

Power supply

Preferably, any aspects of the inventions described herein requiring power are powered by mains electricity (optionally converted to a lower voltage), for example, any pumping arrangements, motors, control means, actuators, control units, sensors etc.

In one embodiment, a body support unit/platform/arrangement according to the invention further comprises a power storage means, for example a battery. At least a limited supply of reserve power may therefore be provided, of use when there is a power cut. In one embodiment, the power storage means may be configured to store enough power to operate the arrangement for a predetermined period of time, for example a week. In such arrangements, it may not be necessary to have a local mains power supply to which the arrangement is permanently connected. A user could periodically replenish (i.e. recharge) the power storage means (e.g. battery) using an extension cable from the nearest mains supply. Such an arrangement is particularly advantageous where the arrangement is used in the medical field. When embodied on a hospital bed, there is often a need to transport the patient in the bed between areas. An on-board power storage means allows the arrangement to continue to operate even when travelling, and away from a fixed power supply.

In another embodiment, the arrangement may be powered (and/or any power storage means replenished) using solar generated electricity. Solar panels (eg photovoltaic cells) may be provided on the headboard of a bed defining the invention; and/or provided on the sides of the base unit, both of which should normally be exposed in use (even when bedding is provided on the arrangement). Alternatively or additionally, power may be generated by extracting energy from the user, for example heat or kinetic energy.

When used in this specification and claims, the terms "comprises" and "comprising" and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.

The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.