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Title:
DOSING SYSTEM FOR DOOR HANDLE SET
Document Type and Number:
WIPO Patent Application WO/2021/206563
Kind Code:
A1
Abstract:
A dosing system for automatic dosage of disinfectant on the hand of a user by operating a door handle set, is presented, wherein the dosing system comprises a door handle set with a first (5a) and a second door handle (5b) connected to spindle devices (9, 17), a dosing device comprising a disinfection container (4) suitable for containing the disinfectant, with a dosing pump (7) for dosing the disinfectant, force transmission devices (6) arranged to transfer the force applied to the first door handle (5a) from the user's hand, via the rotation of at least parts of the spindle devices, to the dosing pump (7) for dosing. Furthermore, spindle devices for door handle set for said dosing system are presented.

Inventors:
LØVIK JØRN INGE (NO)
KAMEL SAMIR ADAM (NO)
LØVIK ANNE MARTE K (NO)
RØRHUS LARS OLAV (NO)
Application Number:
PCT/NO2021/050094
Publication Date:
October 14, 2021
Filing Date:
April 07, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CLEAN HAND SOLUTION AS (NO)
International Classes:
E05B1/00; E05B63/16
Attorney, Agent or Firm:
ACAPO AS (NO)
Download PDF:
Claims:
Patent claims.

1. Spindle devices (9, 17) for door handle set comprising a first (5a) and a second door handle (5b), characterized in that the spindle devices comprise a rotation controller (9) with a first (9a) and a second rotation controller part (9b) with respectively a first and a corresponding second part of a claw coupling , where the first (9a) and second (9b) rotation controller parts are arranged to be attached rigidly with respectively the first (5a) and the second (5b) door handle, but rotatably connected to each other, and where the first and second claw coupling are freely rotatable a predefined rotational angle to each other so that both the rotation controller parts (9a, 9b) rotate when the first door handle (5a) is pressed down, but only the second rotation controller part (9b) rotates when the second door handle (5b) is pressed down.

2. Spindle devices according to claim 1, wherein the spindle devices comprise a torsion pin (17) in the form of a two-part bar, where the two bar parts each are rigidly connected to its own rotation controller part (9a, 9b), but rotatably arranged in relation to each other.

3. Spindle devices according to claim 2, wherein the rotation controller (9) is arranged to transfer standard dimensions for torsion pin (17) having standard dimensions for door handle (5).

4. Spindle devices according to claim 2 or 3, wherein the bar comprises a square bar divided in two.

5. Dosing system for automatic dosing of disinfectant on hand of a user when operating a door handle set, the dosing system comprising:

- a door handle set comprising a first (5a) and a second door handle (5b) connected to spindle devices (9, 17) according to one of the preceding claims; - a dosing device comprising a disinfection container (4) suitable for containing a disinfectant and with a dosing pump (7) for dosing of the disinfectant on the hand of the user by operation of the first door handle (5a); and

- force transmission devices (6) arranged to transmit the force applied to the first door handle (5a) from the user's hand, via rotation of at least parts of the spindle devices (9, 17), to the dosing pump (7) for dosing.

6. Dosing system according to one of claims above, wherein said force transmission devices comprises mechanical force transmission devices (6) connecting the spindle devices to the dosing pump (7).

7. Dosing system according to claim 6, wherein the force transmission devices (6) comprise at least one of the following types: stay, wire, cord, zip-tie-like connecting element, pneumatic devices and hydraulic devices.

8. Dosing system according to claim 7, where the force transmission devices (6) comprise a zip-tie-like connecting element and a cradle device (19) with a cradle element arranged to rock around a cradle axis, the zip-tie-like connecting element being connected to the cradle element and further to a pump piston (8), so that the direction of longitudinal movement of the zip-tie-like connecting element is changed by a cradle angle, and the pump piston (8) is arranged which is arranged to press against the dosing pump (7).

9. Dosing system according to claim 8, wherein the zip-tie-like connecting element is fixed but adjustably, arranged to the pump piston (8).

10. Dosing system according to one of claims 8 to 10, wherein the zip-tie-like connecting element is flexible in the transverse direction.

11. Dosing system according to one of claims 5 to 10, further comprising a release lever arranged at the dosing unit and operable for the user, wherein the release lever (3) mechanically cooperates with the force transmission devices so that the dosing pump (7) is not operated when operating the first door handle (5a).

12. Dosing system according to claim 11, wherein the release lever (3) is arranged so that it slackens the force transmission element such that the dosing pump (6) is not operated.

13. Dosing system according to claim 5, wherein said force transmission devices comprise an energy harvesting system comprising a first energy harvesting device (18a) mechanically coupled to the spindle devices for harvesting electrical energy from the force applied to at least one of the hand handles (5a, 5b), and wherein the energy harvesting device (18a) is electrically connected to the dosing pump (7) for transferring power to contribute to its operation.

14. Dosing system according to one of claims 5 to 13, wherein the spindle devices are according to one of claims 1 to 3.

15. Dosing system according to claim 14, wherein the force transmission devices (6) arranged to transmit the force applied to the first door handle (5a) from the user's hand to the dosing pump (7), are connected to the first rotation controller part (9a).

16. Dosing system according to claim 15, wherein the force transmission devices (6) are connected to a torque arm rigidly connected to the first rotation controller part (9a).

17. Dosing system according to claim 16, wherein the force transmission devices comprise an energy harvesting system comprising a first energy harvesting unit (18a) mechanically connected to the first rotation controller part (9a) for harvesting electrical energy from the force applied to the first handle (5a) , and wherein the energy harvesting unit (18a) is electrically connected with the dosing pump (7) for transferring power to contribute to its operation.

18. Dosing system according to claim 17, wherein the energy harvesting system further comprises a second energy harvesting unit (18b) mechanically connected to the second rotation controller part (9b) for harvesting electrical energy from force applied to the second handle (5b), wherein the energy harvesting unit (18b) is electrically connected to the dosing pump (6) for transmission of power to assist in its operation.

19. Dosing system according to claim 17 or 18, wherein at least one of an energy source and an energy storage in addition to the energy harvesting units (18a, 18b) provides power to contribute to operation of the dosing pump (7).

20. Dosing system according to claim one of claims 17 - 19, wherein the energy harvesting system comprises an energy harvesting unit (18a, 18b) arranged to be driven by movement of door leaves where the door handle set is arranged.

21. Dosing system according to one of claims 18 to 20, comprising devices for manually controlled electronic release of the dosing pump (7).

Description:
TITLE: DOSING SYSTEM FOR DOOR HANDLE SET

Field of the invention

The present invention relates generally to solutions for improving hygiene and reducing the spread of infection. More particularly, the invention relates to solutions for dosing disinfectant on hand when opening a door with a door handle. In addition, it also applies to a separate mechanism that prevents dosing when handling door handles on the opposite side. Specifically, the invention relates to a dosing system and a door handle set according to the independent claims.

State of the art

Improving hygiene and reducing the spread of infection are primary goals of significant importance for both health and the economy on both a small and large scale. In a globalized world with great mobility, this has become increasingly important; something recent pandemics have clearly made visible.

Traditional dosing solutions are usually placed on a wall or on a stand - preferably strategically placed, but users must want to use them themselves. The dosing solutions are found in both mechanical and electronic systems.

Surveys show that less than 10% of the population use disinfection in this way if there are no special situations where someone surveys and makes demands - typically in restaurant areas on cruise ships.

Studies also show that only 60-70% of the Scandinavian population wash their hands when visiting toilets in public places. Traditional dosing solutions do not help much in such situations where visitors can easily opt out of using disinfectant. Especially in areas where many people travel, and in places where there are large concentrations of people over time, it is important to have good hand hygiene to avoid the spread of infection.

Traffic hubs such as airports and railway stations are highly exposed to the spread of infection. Shopping malls, schools, and not least hospitals and other health institutions are also vulnerable. The staff are often good at good hand hygiene, but that is far from the case for the visitors.

In more closed areas with a concentration of people, the risk of infection is even greater. This can be on cruise ships, oil platforms or the like, where a number of people are within a limited area for maybe weeks. In the event of an outbreak on such installations, the entire installation must be closed down and disinfected.

There are significant cultural differences in terms of hygiene in general and especially when visiting the toilet, and an increasing internationalization increases the need for good solutions to restrict the spread of infection.

Description of known patent documents

There are a large number of patents and patent applications having tried to solve problems related to the spread of infection by the use of doors and door handles.

The present invention differs from the prior art in general and in particular in relation to existing patents, inter alia as explained below.

The patent family "Method and apparatus for dispensing sanitizer fluid, opening doors and recording data pertaining to hand sanitization" comprising: WO 2017/193088/AU2017261361 A1, discloses an invention with electronic control of the system. It presents a solution with sensors that give a signal to motors/pump dosing. The solution is designed for use when sliding doors open. That is, mechanism and door that slides outwards, and is not intended for standard door handles.

The patent application « Sanitizer Apparatus » US2018135332, relates to spraying of door handles. Admittedly a mechanical solution, but with a patent for time delay so that the door handle is sprayed with disinfectant after someone has operated the door handle. Others have also tried this solution, but it was not well received in the market because the door handle was no longer tempting to operate. There is also no effect for those who do not wash their hands after their errand in the toilet. The patent application «Door handle sanitizer» GB2549144 (A), describes a device that is attached to the door frame and activated by closing the door. The unit then gives a spray of disinfectant to clean the door handle. The unit is thus not integrated in the door handle mechanism itself, and disinfects the door handle and not the hand.

The patent application «Sanitizer Apparatus», US2018135332, describes a solution which sprays disinfectant liquid on the door handle, and a mechanical solution which gives a time delay after the door handle has been operated.

The patent "Method and apparatus for dispensing sanitizer fluid", US8505782 (B1) describes a solution with an additional lever on the handle which one could operate together with the door handle so as to provide disinfection liquid on hand and/or handle.

The patent "Method and apparatus for dispensing sanitizer fluid", US8408423 (B1) describes a solution for passing disinfectant liquid through a special door handle. Patent application "Hand Sanitizing Door Opener", US2012080451 (A1) describes a solution which limits access to the door handle such than one gets disinfection liquid applied by movement of the hand forward to door handle. Here, too, it is intended for a door lever that is pushed on to open the door.

The patent "Controllable door handle sanitizer", WO2010028170 (A2) describes an electronic solution for disinfecting the door handle.

The patent "A door handle including means for cleaning the users hand" GB2421897 (A) describes a solution for dosing through a special door handle.

There are a number of problems with solutions according to the state of the art, among other things, related to efficiency in terms of hygiene, user-friendliness, ergonomics, economy including lifetime costs, energy consumption and standardization. Summary of the invention

A general object of the invention is to solve problems of the prior art as described above.

An overall purpose is to improve hygiene and to reduce the spread of infection in general.

A more specific object of the invention is to contribute to a larger proportion of the population having clean hands in general and after toilet visits in particular.

An essential object of the invention is to provide a user-friendly concept. The user relates to a door handle in the usual way, but will receive a dosage of disinfectant on the hand which he will automatically by intuition rub over the hands.

It is not planned that the disinfection will replace hand washing with soap and water, but be a supplement - and not least disinfect the hands of those who do not use soap and water - and to disinfect the hands of those who have washed their hands, but who still have unclean hands due to e.g. operation of unclean door handles.

It is an object of the invention to provide a solution which does not require an external energy supply e.g. in the form of batteries or mains connection.

A further purpose is the reuse of existing solutions in the form of standard doors and door handle sets.

The invention relates, inter alia, to a solution which means that dosing only takes place on the side on which the dosing device is mounted. Handling the handle from the opposite side should not cause dosing to occur.

The solutions according to the invention are suitable for use on doors in general and are particularly relevant for toilet doors. The invention relates in particular to solutions with mechanical transmission of force/movements, but does not exclude electronic solutions where sensors define when dosing is to take place and electric motors/valves which provide dosing. Mechanical transmission of movements with the solution may be physical struts, rods, connectors, but may also be with wires, zip-tie-like connecting elements, or strings. It can also be pneumatic or hydraulic. The starting point for mechanical force in dosing solutions is that a person uses torsional force on a normal door handle. Mechanical force can also come from other handle solutions, or sliding solution, but comes from people who apply that force - or animal for that matter.

Dosage unit accommodates a container - bottle or bag, which is easy to replace.

That is, disposable containers. However, this does not exclude refill solutions that will contribute to a more environmentally friendly system where less packaging is used. On the other hand, this must be set up against the danger of impurities from the filling side, and simplicity for the service personnel.

Disinfectant - or other type of agent, can be liquid, gel, foam or other forms suitable for this use and device.

Service and replacement/replenishment of disinfection tank is thought done by service personnel that could do service in areas such and who like to have the same service interval. This applies to refilling of toilet paper, soap, paper towels and general cleaning.

It is planned that the dosing system has a release mechanism which means that users who absolutely do not want a dosing on the handle, by operating a button or lever can avoid getting dosing on the hands.

There may be physical or mental reasons why someone does not want to/cannot use disinfectant, such as allergies or something else. Arrangements are made for information and signs to be provided with signs and information systems about dosing, and for dosing to be avoided with the above-mentioned solution. A first aspect of the invention is spindle devices for door handle set comprising a first and a second door handle, where the spindle devices comprise a rotation controller with a first and a second rotation controller part with respectively a first and a corresponding second part of a claw coupling , where the first and second rotation controller parts are arranged to be attached rigidly with respectively the first and the second door handle, but rotatably connected to each other, and where the first and second claw coupling are freely rotatable a predefined rotational angle to each other so that both the rotation controller parts rotate when the first door handle is pressed down, but only the second rotation controller part rotates when the second door handle is pressed down.

The spindle devices can comprise a torsion pin in the form of a two-part bar, where the two bar parts each are rigidly connected to its own rotation controller part, but rotatably arranged in relation to each other.

The rotation controller can be arranged to transfer standard dimensions for torsion pin having standard dimensions for door handle. The bar can comprise a square bar divided in two.

A second aspect of the invention is a dosing system for automatic dosing of disinfectant on hand of a user when operating a door handle set, wherein the dosing system comprises a door handle set comprising a first and a second door handle connected to spindle devices as described above, a dosing device comprising a disinfection container suitable for containing a disinfectant and with a dosing pump for dosing of the disinfectant on the hand of the user by operation of the first door handle, and force transmission devices arranged to transmit the force applied to the first door handle from the user's hand, via rotation of at least parts of the spindle devices, to the dosing pump for dosing.

The force transmission devices can comprise mechanical force transmission devices connecting spindle devices to the dosing pump. The force transmission devices can comprise at least one of the following types: stay, wire, cord, zip-tie-like connecting element, pneumatic devices and hydraulic devices.

The force transmission devices can comprise a zip-tie-like connecting element and a cradle device with a cradle element arranged to rock around a cradle axis, the zip- tie-like connecting element being connected to the cradle element and further to a pump piston, so that the direction of longitudinal movement of the zip-tie-like connecting element is changed by a cradle angle, and the pump piston is arranged which is arranged to press against the dosing pump.

The zip-tie-like connecting element can be fixed but adjustably, arranged to the pump piston.

The zip-tie-like connecting element can be flexible in the transverse direction.

The dosing system can comprise a release lever arranged at the dosing unit and operable for the user, wherein the release lever mechanically cooperates with the force transmission devices so that the dosing pump is not operated when operating the first door handle.

The release lever can be arranged so that it slackens the force transmission element such that the dosing pump is not operated.

The force transmission devices can comprise an energy harvesting system comprising a first energy harvesting device mechanically coupled to the spindle devices for harvesting electrical energy from the force applied to at least one of the hand handles, and wherein the energy harvesting device is electrically connected to the dosing pump for transferring power to contribute to its operation.

The dosing system can comprise spindle devices as described above. The force transmission devices arranged to transmit the force applied to the first door handle from the user's hand to the dosing pump, can be connected to the first rotation controller part.

The force transmission devices can be connected to a torque arm rigidly connected to the first rotation controller part.

The force transmission devices can comprise an energy harvesting system comprising a first energy harvesting unit mechanically connected to the first rotation controller part for harvesting electrical energy from the force applied to the first handle, and wherein the energy harvesting unit is electrically connected with the dosing pump for transferring power to contribute to its operation.

The energy harvesting system further can comprise a second energy harvesting unit mechanically connected to the second rotation controller part for harvesting electrical energy from force applied to the second handle, wherein the energy harvesting unit is electrically connected to the dosing pump for transmission of power to assist in its operation.

The at least one of an energy source and an energy storage in addition to the energy harvesting units, can provide power to contribute to operation of the dosing pump. The energy harvesting system can comprise an energy harvesting unit arranged to be driven by movement of door leaves where the door handle set is arranged.

The dosing system can comprise devices for manually controlled electronic release of the dosing pump.

The means needed to solve the problems

The present invention achieves the objectives set out above by spindle devices for a door handle set and a dosing system, as defined in the preamble of independent claims, with the features of the characteristics thereof. A number of non-exhaustive embodiments, variants or alternatives of the invention are defined in the dependent claims.

The present invention achieves the object set forth above by a set of dependent claims.

Brief description of the figures

The invention will be explained in more detail with reference to the following figures, in which:

- Figure 1 shows a dosing system ready to be mounted on a door, wherein the system comprises a main part (1), a cover (2), a disengagement lever (3), a disinfection tank (4), a handle (5).

- Figure 2A shows a schematic representation of an embodiment of the invention with a mechanical transmission (6), a dosing pump (7), a pump piston (8) pressing against a dosing pump (7), a disengagement lever (3), a rotation controller (9) and a connection piston (10).

- Figure 2B corresponds to Figure 2A, but shows an alternative embodiment in which the mechanical force transmission (6) comprises a zip-tie-like connecting element and a cradle device (19).

- Figure 3 shows a schematic representation of the main part (1) of an embodiment of the invention as shown in Figure 1 and Figure 2, where the main part (1) comprises a disengagement lever (3), a force transmission (6), a connecting piston (10), a locking spring (11), a pusher spring (12), a scroll wheel (13) and a locking mechanism (14).

- Figure 4 shows a detailed embodiment of a door handle set with automatically disengagement of door handle operated from the opposite side of the device (outer in this description). The rotation controller (9) comprises a first/outer rotation controller part (9b) and a second/inner rotation controller part (9a) coordinatingly arranged so that by operating the second/outer door handle (5b), the first rotation controller part (9a) will not transfer motion to the force transmission shown in Figure 2. - Figure 5 shows a door handle set comprising a first/inner door handle (5a) which during operation will rotate the first/inner rotation controller part (9a), thereby transmitting movement to the transmission, and second/outer rotational controller part (9b). Square bar (17) and door handle outer (5b) will follow the same rotation as door handle inner (5a). The figure further shows two harvesting units (18a, 18b).

Overview of the reference figures that refer to the drawings

Detailed description of the invention with reference to the figures

The invention will be described in more detail in the following with reference to the figures which show several embodiments.

The system is roughly arranged to operate as described below with reference to the figures 1-4.

Figure 1 shows a dosing system ready to be mounted on a door, the system comprising a main part (1), a cover (2), a release lever (3), a disinfection container (4), a door handle (5). The disinfection container (4) is here covered by the cover (2) and arranged to contain a disinfectant. The dosing system further comprises cooperating devices for dosing the disinfectant as described hereinafter. When a user or "the guest" uses the door handle (5) in the usual way to open the door by pressing the door handle (5) down, he receives a dose of disinfectant agent by the disinfectant container (4) on the hand - in this case on the back of the hand. The disinfection agent normally holds a lower temperature than the surface of the hand, and intuitively the user will use the second hand to rub the agent out.

The main part (1) of the dosing system with the release lever (3) is described in more detail in the following.

Figure 2A shows a schematic representation of an embodiment of the invention with a mechanical force transmission (6), a dosing pump (7), a pump piston (8) which presses against a dosing pump (7), a release lever (3), a rotation controller (9) and a connection piston (10). In that the user turns the door handle (5a) to open the door, movement is transferred through the force transmission (6) - which may be rod/wire/cord/zip-tie-like connection element - and pulling the pump piston (8), which again press the dosing pump (7) which is cooperatively mounted with the disinfectant container (4) . The dosing pump (7) is normally supplied with the container (4) and is thereby replaced each time the container (4) is replaced.

The force transmission (6) is affected by the user operating the door handle (5a) on the same side as the dosing unit. The rotation controller (9) with a torque arm to which the force transmission (6) is attached will rotate in the same way as the rotation of the door handle (5a).

The force transmission (6) will pull on the pump piston (8) as described above if the connection piston (10) is not released. If for some reason you do not want, or cannot, get disinfectant on your hands, you can operate the release lever (3).

Figure 2B shows an alternative embodiment in relation to Figure 2A. The mechanical force transmission (6) here comprises a zip-tie-like connecting element which is connected to a cradle device (19) arranged to change the longitudinal direction of the zip-tie-like connecting element with a cradle angle which is mainly determined by the connecting element being further connected to the pump piston (8). A longitudinal movement of the zip-tie-like connecting element causes rocking of the cradle device (19) so that the longitudinal movement further causes operation of the pump piston (8) so that it presses against the dosing pump (7). The zip-tie-like connecting element can advantageously be fixedly arranged to the cradle device (19) and fixedly but adjustably arranged to the pump piston (8). The cradle device (19) comprises a cradle axis and a cradle element arranged to rock around the cradle axis, the cradle element further being mechanically connected to the zip-tie-like connecting element. The cradle device (19) helps to change the direction of the force transmission with the cradle angle, where the cradle angle is, for example, 90 degrees. Furthermore, both the zip-tie-like connecting element and the cradle device (19) are preferably mechanically flexible; which is advantageous, among other things, in terms of assembly and durability. The disinfection agent can be gel, foam or liquid and having a different viscosity depending on the type and vendor. It may therefore be necessary to be able to adjust how tight the force transmission (6) should be. This is not shown in the illustrations, but can be designed as a sleeve with threads arranged where the force transmission (6) is attached to the pump piston (8) in the same way as brake adjustment on a bicycle.

Figure 3 shows a schematic representation of the main part (1) of an embodiment of the invention as shown in Figure 1 and Figure 2, where the main part (1) comprises a release lever (3), a force transmission (6), a connection piston (10), a locking spring (11), a pusher spring (12), a scroll wheel (13) and a locking mechanism (14) with a mechanical lever which disengages the mechanical transmission shown in Figures 1 and 2. The locking spring (11) locks the connecting piston (10) when the release lever (3) is not operated. When the release lever (3) is operated, the locking spring (11) is disconnected the piston (10) which is then pressed against the pusher spring (12) by operation of the door handle (5) which implies that the force transmission (6) presses against the roller wheel (13). When the operation of the door handle ceases, the pusher spring (12) will push the connection piston (10) back and the locking spring (11) will regain its locking position. Release lever (3) has a locking mechanism (14) under the connection piston (10) which makes the release last until the door handle is operated to open the door. The release lever (3) is thus arranged to push the locking spring (11) when depressed. Thus, the connecting piston (10) could yield while the force transmission (6) presses against the roller wheel (13) by operation of the door handle (5) and the pump piston (8) will not get enough force to press the dosing pump (7).

When releasing the door handle (5), the pusher spring (12) will ensure that the connecting piston (10) will slide back into place and the locking spring (11) will lock the connecting piston (10) so that the system is ready for new dosing to the next person operating the door handle. To ensure that the system operates independently of the time between operating the release lever (3) and operating the door handle (5), a locking system (16) integrated in the release lever (3) is installed. This locks until the force transmission (6) pushes on the connection piston (10) so that the release lever (3) detaches from the lock and returns to the starting point by means of a spring/gas damper (15).

This construction ensures that you can operate both the release lever (3) and the door handle (5) with just one hand, and makes it easy to possibly carry luggage or other in the other hand.

The other hand should then be released to rub the product over the hands as soon as the door handle has been released (5).

Figure 4 shows a detailed embodiment of a door handle set with automatic disengagement of door handle operated from the opposite side of the device. The rotation controller (9) comprises a first/outer rotation controller part (9b) and a second/inner rotation controller part (9a) coordinatingly arranged so that when operating the second/outer door handle (5b), the first rotation controller part (9a) will not transmit movement to the force transmission shown in Figure 2. Rotation controller (9) comprises two rotation controller parts (9a, 9b) which ensures that corresponding movement of door handle from the opposite side of the door, does not lead to dosing.

The first rotation controller part (9a) has a square bar which fits into most of the door handles on the market, a claw coupling against the second rotation control portion (9b) that makes it rotate together with the second rotation controller part (9a). The first rotation controller part (9a) has a torque arm which controls how far the force transmission (6) moves.

The second rotation controller part (9b) has a square hole suitable for standard square rod (17) for lock-cases and a claw coupling that fits against the first rotation controller part (9a), but so that it does not rotate the first rotation controller part (9a) when operated from the opposite side of the unit. This happens in that the rotation controller parts (9a, 9b) engage each other as a claw coupling with slack arranged so that rotation controller parts (9a, 9b) can freely rotate relative to one another in a predefined angle of rotation. The rotation controller parts (9a, 9b) with associated part of the claw coupling are arranged on opposite parts of a two-part spindle bar. The door handles (5) and the rotation controller (9) possibly with torque arm for the force transmission, will after having been pressed down returns to the starting point by means of a spring system in an associated lock case (not shown in the Figures) - the same way as usual by operation of door handle sets. The dosing system will then follow and be ready for a new cycle. The claw coupling is arranged so that claw coupling part of the first rotation controller part (9a) by pressing down the first door handle (5a) of said starting point coordinatingly will rotate the second rotation controller part (5b) by its claw coupling while the predefined rotational angle is dimensioned such that the first rotation controller part (9a) with the associated door handle (5a) is not rotated by pressing down the other door handle (5b).

The dosing unit in the example above has a mechanical force transmission (6) which initiates dosing. This can be done electronically with sensors and electric motors, powered by a connected fixed power supply, energy harvesting from human handling of door handles/doors, or using replaceable and/or rechargeable batteries. Figure 5 shows a door handle set comprising a first/inner door handle (5a) which upon operation will rotate the first/inner rotation controller part (9a), thereby transmitting movement to the force transmission, and the second/outer rotation controller part (9b). Square bar (17) and door handle outer (5b) will follow the same rotation as the door handle inner (5a). The embodiment in the figure comprises further an energy harvesting system with two energy harvesting devices (18a, 18b) mounted on the torque arm to the respective rotation controller part (9a) and (9b). The energy harvesting devices (18a, 18b) utilize energy from the operation of both the door handles, and will be able to provide enough energy to display service information on a display and/or with a battery, drive sensors and a pump for dosing the agent.