Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
A DEVICE TO MOVE A DOOR LEAF WITH ONE'S FOOT.
Document Type and Number:
WIPO Patent Application WO/2021/049959
Kind Code:
A1
Abstract:
A device to move a door leaf with one's foot is equipped with a pedal (1) installed close to the bottom part of a door leaf (2) and is characterized by the fact that the pedal (1) is connected with the door leaf (2) by means of a leading mechanism (3) and the device has a returning unit (4). The leading mechanism (3) allows the pedal (1) to move, relative to the door leaf (2), with one degree of freedom in a vertical or close-to-vertical direction, while the horizontal pedal (1) movements allow to move the door leaf (2). The returning unit (4) makes the device to automatically move back to the none-pressed position, once the user takes the foot from the pedal (1).

Inventors:
AUGUSTOWSKI MIROSŁAW (PL)
Application Number:
PL2020/000064
Publication Date:
March 18, 2021
Filing Date:
July 27, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
AUGUSTOWSKI MIROSLAW (PL)
International Classes:
E05B53/00; E05F13/02; E06B7/28
Foreign References:
US0555993A1896-03-10
US7270352B12007-09-18
Download PDF:
Claims:
Patent Claims

1. A device to move a door leaf with one’s foot, equipped with a pe dal installed close to the bottom part of a door leaf is characterized by the fact that the pedal (1) is connected with the door leaf (2) by means of a leading mechanism (3) and the device has a returning unit (4).

2. The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of two tracks (5) connected in a sliding manner with a plate (6).

3. The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of at least one leading rod (13) cooperating with a sliding bush (14).

4. The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of at least one leading bush (19) cooperating with a sliding rod (20).

5. The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of a pivot (23) connected in a spinning manner with a pedal arm (24).

6. The device as described by claim 1 is characterized by the fact that it has a shifting unit (15).

7. The device as described by claim 6 is characterized by the fact that the shifting unit (15) consists of shifting grooves (16) cooperating with shifting pegs (17).

8. The device as described by claim 6 is characterized by the fact that the shifting unit (15) constitutes a thread connection (21).

9. The device as described by claim 6 is characterized by the fact that the shifting unit (15) consists of a shifting arm (26) connected in a spinning manner with a pivot (23) and cooperating with a shifting cam (27).

10. The device as described by claim 6 is characterized by the fact that it has a mobile part (22) of the door leaf (2).

1 l.The device as described by claim 1 is characterized by the fact that it has a cut-out (29) in the door frame (18).

AMENDED CLAIMS received by the International Bureau on 8 January 2021 (08.01.2021 )

Claims

[Claim 1] A device to move a door leaf with one’s foot, equipped with a pedal installed close to the bottom part of a door leaf is characterized by the fact that the pedal (1) is connected with the door leaf (2) by means of a leading mechanism (3) and the device has a returning unit (4).

[Claim 2] The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of two tracks (5) connected in a sliding manner with a plate (6).

[Claim 3] The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of at least one leading rod (13) co operating with a sliding bush (14).

[Claim 4] The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of at least one leading bush (19) co operating with a sliding rod (20).

[Claim 5] The device as described by claim 1 is characterized by the fact that the leading mechanism (3) consists of a pivot (23) connected in a spinning manner with a pedal arm (24).

[Claim 6] A device to move a door leaf with one’s foot, equipped with a pedal installed close to the bottom part of a door leaf is characterized by the fact that it has a shifting unit (15).

[Claim 7] The device as described by claim 6 is characterized by the fact that the shifting unit (15) consists of shifting grooves (16) cooperating with shifting pegs (17).

[Claim 8] The device as described by claim 6 is characterized by the fact that the shifting unit (15) constitutes a thread connection (21).

[Claim 9] The device as described by claim 6 is characterized by the fact that the shifting unit (15) consists of a shifting arm (26) connected in a spinning manner with a pivot (23) and cooperating with a shifting cam (27).

[Claim 10] The device as described by claim 6 is characterized by the fact that it has a mobile part (22) of the door leaf (2). [Claim 11] A device to move a door leaf with one’s foot is characterized by the fact that it has a cut-out (29) in the door frame (18). [Claim 12] The device as described by claim 11 is characterized by the fact that in the cut-out (29) of the door frame (18) there is a pedal connected with a mechanism forcing a handle latch out of the door frame (18).

Description:
A device to move a door leaf with one’s foot.

The subject of the invention is a device to move a door leaf with one’s foot. The invention can be applied to different doors but it is especially advantageous in toilets where a higher hygiene is required and using one’s foot instead of a hand to move a door leaf lowers the risk of transmitting various diseases. The device can be used for both swinging and sliding doors.

The most commonly known door leafs are designed to be operated with our hands through a handle or a knob which often not only let us pull or push the door but through the connection with a catch also lock the door. Touching with hands the same surfaces by many people, especially in public toilets, is the reason for many infections and constitutes a serious health problem. Therefore, for health reasons and also to enable going through the door when our hands are busy, the doors which do not engage our hands are developed. The first version of the device allowing the user to open the door with one’s foot which is known from the patent description No. FR 2951487 (fig. 1-3) has two identical mechanisms situated on both sides of the door leaf equipped with a lock which can be opened by means of the two-sided handles. Each of the mechanisms constitutes a rectangular plate mounted on the lower end of the door leaf, close to its comer, and a diagonally situated rectangular foot pedal being fitted to the plate and connected through its one end with a rod connector of which the other end is attached to the door handle planted in the door lock being situated in the side of the door opposite the door hinges which connect the door leaf with the door frame.

The versions of the device presented in fig. 4-10 feature a considerably extended structure including profiles of both foot pedals and profiles of rod connectors as well as elements locking the door which makes the device and the installation process much more laborious.

The device known from the patent description No. US 7270352 B1 designed to open and close the door, preferably the toilet door, equipped with the usual handles or doorknobs and adjusted to be operated with one’s foot, consists of an elongate unit connecting the door handle with the lower end of the door leaf. The elongate unit consists of an actuator shaft, held in a tubular housing, of which the upper end is fixed to the handle or doorknob by means of a cord or a strap and the lower end carries a foot pedal. The whole device is secured to the door leaf through the housing of which the lower end is equipped with a hook component which is interengaged with the lower edge of the door and the upper end is looped over the doorknob shaft by means of a bracket. The upper part of the actuator has strap elements which enable to operate the door handle or a doorknob with a foot pedal connected with these elements by means of an actuator. The user steps on the pedal which, through the connection with the actuator and strap elements attached to the doorknob, makes the knob rotate and release the latch. The pedal is then pulled or pushed by one’s foot so that the housing and hook, firmly fastened to the door, pivot the door open. The device known from the patent description No. US 4569546A has a pedal connected with the doorknob clamp through a cord or the like. The pedal is fixed to the bottom of a door and the clamp is secured to the doorknob. Once the user presses the pedal, the cord tightens and turns the doorknob which makes the door latch retract from the doorjamb and allows the user to either pull or push the door with one’s foot. The pedal is attached to the door through a hinge but also rests on a supporting surface or floor through a wheel or caster secured to the underside of the pedal base. The pedal is also equipped with a spring which sets it back in the initial position.

The device known from the patent description No. EP 1048811, being a foot operated system for opening a door having a hinged edge and a swingable edge, consists of a foot pedal connected to mounting means for mounting the foot pedal near the swingable edge, actuator means connected to the foot pedal, and catching means, for mounting onto the door, such that the catching means protrude beyond the swingable edge and operationally are caught by the actuator means. The actuator means consist of an actuator rod stiffly connected with the pedal and parallel to the swingable edge. The catching means comprise also a catching pin fixed to the door in a way allowing it to catch the actuator rod while using the foot pedal. Moreover, the actuator rod is L-shaped and its first leg is positioned vertical and parallel to swingable edge and a second leg is rigidly connected to foot pedal.

The device known from the patent description No. US4817239 A., being a sanitary door opening assembly, comprises a U-shaped bracket disposed around the outer edge and sides of a door and a hook mounted to this U-shaped bracket and door by fasteners. The hook is defined by an arcuate pocket openiag toward the outer swinging edge of the door for receiving a human forearm to pull open the door.

The device known from the patent description No. US20140197648 Al, being a foot operated door opener configured such that a door may be pulled open using either the top or bottom of a user’s foot (fig. 7), is made of a single piece of durable material profiled in a wavy manner allowing a user to slide in or out one’s foot or shoe in an easy way and use the opener without any risk that one’s foot or shoe will get damaged. The opener is attached to the lower surface of the door with a set of screws.

The device known from the patent description No. W02005004688 A3, being a sanitary door opener, comprises an attachment to the bottom of a conventional door enabling a user to pull open the door by engaging the attachment with one’s foot or shoe and thereby preventing hand contact with the door opener. The opener preferably is manufactured from a single piece of durable and flexible metal material and is bent to form a front face, a bottom face, a rear face, a top face extending outwardly from the rear face, and a lip extending downwardly from the top face. The opener is installed easily to a door b sliding the door opener under a door such that the front face contacts the front panel of the door, the bottom face contacts the bottom edge of the door and the rear face contacts the rear panel of the door. The device known from the patent description No. US 2009145037, being a door opener for mounting on a door, comprises a mounting plate fixed rigidly to the door, a frictional engagement beam protruding from the mounting plate and an upwardly projecting ledge spaced apart from the mounting plate. A user steps on the engagement beam and the upwardly projecting ledge and then forcibly retracts one’s foot to lever the door open.

The aim of the invention is to build a device which would let us, in an easy way, move the door leaf by means of our foot, without the need to stand on just one leg but with the possibility to move both feet when fully controlling the door leaf and freezing it in any position.

The other aim of the invention, in case of the door leaf opening towards the user, is to allow the user to crack the door open and slide the foot between the door leaf and the door frame to make it easier to fully open the door leaf.

The next aim of the invention is to make the device resistant to strong powers which may occur while operating the device by one’s foot and not to let the powers be transmitted to other elements of the door.

The essence of a device to move a door leaf with one’s foot in accordance with the invention is the fact that a pedal is connected with a door leaf by means of a leading mechanism and the device has a returning unit. The leading mechanism allows the pedal to move, relative to the door leaf, with one degree of freedom in a vertical or close-to-vertical direction, while the horizontal pedal movements allow to move the door leaf. The returning unit makes the device to automatically move back to the none-pressed position, once the user takes the foot from the pedal. Stepping on the pedal makes it move from the upper position to the lower one in which the bottom surface of the pedal touches the ground and the top surface of the pedal presses on the foot thanks to the pressure caused by the returning unit.

It is beneficial when the leading mechanism consists of two tracks connected in a sliding manner with a plate, or at least one leading rod cooperating with a sliding bush, or at least one leading bush cooperating with a sliding rod, or a pivot connected in a spinning manner with a pedal arm.

It is beneficial when the device has a shifting unit. The shifting unit makes it easier to open the door by moving the pedal and the foot towards the space between the door leaf and the door frame.

It is beneficial when the shifting unit consists of shifting grooves cooperating with shifting pegs, or when the shifting unit constitutes a thread connection, or when the shifting unit consists of a shifting arm connected in a spinning manner with a pivot and cooperating with a shifting cam. It is beneficial when the device has a mobile part of the door leaf. The aim of the mobile part of the door leaf is to make it easier to move the pedal and the users foot towards the space between the door leaf and the door frame.

It is beneficial when the device has a cut-out in the door frame. The cut-out allows the user to slide the foot and interact with the door leaf, or the pedal, or any other element connected to the door leaf and by using horizontal force open the door leaf.

The advantage of the device in accordance with the invention is the fact that the user does not need to stand on just one leg when operating it. The foot operating the device may be set on the ground together with the pedal which allows the user to keep balance and relieve the other foot.

The other advantage is the possibility to move both feet without losing the control over the door leaf. Thanks to the returning unit, when the user steps on the pedal, the top surface of the pedal presses on the sole of the user’s foot which allows the user to move this foot, all the time keeping contact with the pedal and being in control of the door leaf. The user can shift the weight of the body to the pressed pedal and easily move the other foot.

The other advantage is resistance to strong powers which may occur when stepping on the pedal. When being pressed strong, the pedal rests on the ground and the pressure is transferred to the ground rather than to the elements of the device and/or the door.

The next advantage is the fact that the motion can be easily transmitted (e.g. by means of a cable, tappet, lever) from the leading mechanism to other elements e.g. to a handle, or to a mechanism helping to open, lock or unlock the door, etc. Stepping on a pedal engages a decent amount of force and energy which can be used to move other elements.

The devices which have currently been used to move the door leaf by means of the foot, when used on the door with a door closer installed, require a strong and energetic movement to either push or pull the door leaf open and the user needs to quickly go through before the door closer shuts the door. The device in accordance with the invention allows the user to go smoothly through the door without the need to take the foot from the pedal which gives the user the chance to control the door opening angle as well as to move both feet and make stops and hold the door still for as long as the user wants to.

The shifting unit makes it easy to slide the foot with the pedal between the door leaf and the door frame and in this way comfortably open the door.

The device allows the user to not only move the door leaf through moving the pedal above the ground level, which may cause some difficulties in keeping the balance and strain the other foot, but also through moving the pedal on the ground, which makes it easier to keep the balance and also lowers the strain on the other foot.

The cut-out in the door frame allows the user to open the door without the necessity to install the pedal on both sides of the door which substantially simplifies the device.

The device in accordance with the invention has been shown in the pictures fig. 1-25 in which: fig. 1-2 present the first example of the device installed on the portable toilet of which fig. 1 presents the device in a none-pressed position in a vertical section along the line A- A, fig. 2 presents the device in a none-pressed position in a horizontal section along the line B-B, fig. 3-6 present the second example of the device installed on the sanitary cabin door, of which fig. 3 presents the side view of the device in a none-pressed position, fig. 4 presents the front view of the device in a none-pressed position, fig. 5presents the side view of the device in a pressed position, fig. 6presents the front view of the device in a pressed position, fig. 7-13 present the third example of the device installed on the portable toilet, of which fig. 7 presents the device in a none-pressed position in a vertical section along the line C-C, fig. 8 presents the front view of the device in a none- pressed position, fig. 9 presents the device in a none-pressed position in a horizontal section along the line D-D, fig. 10 presents the device in a pressed position in a vertical section along the line E-E, fig. 11 presents the device in a pressed position in a horizontal section along the line F-F, fig. 12 presents a magnification of the “P” element from fig. 7 in a vertical axial section, fig. 13 presents a magnification of the “Q” element from fig. 10 in a side view, fig. 14-17 present the fourth example of the device installed on the regular door leaf (bottom door edge is right above the ground), of which fig. 14 presents the device in a none-pressed position in a vertical section along the line G-G, fig. 15presents a magnification of the “R” element from fig. 14 in a vertical axial section, fig. 16presents the device in a none-pressed position in a horizontal section along the line H-H, fig. 17presents the device in a pressed position in a horizontal section along the line H-H, fig. 18-20 present the fifth example of the device installed on the regular door leaf (bottom door edge is right above the ground), of which fig. 18 presents the front view of the device in a none-pressed position, fig. 19 presents the device in a none-pressed position in a horizontal section along the line I-I, fig. 20 presents the device in a pressed position in a horizontal section along the line I-I, fig. 21-23 present the example of the cut-out in a door frame, made in a lock beam of a portable toilet, of which fig 21. presents the cut-out in a verti cal section along the line J-J, fig. 22 presents the front view of the cut-out, fig. 23 presents the cut-out in a horizontal section along the line K-K, fig 24-25 present the example of the cut-out in a door frame, made in a threshold of a portable toilet, of which fig. 24 presents the cut-out in a vertical section along the line L-L, fig. 25 presents the front view of the cut-out.

To simplify and standardize the description, we will assume the device is installed on the toilet door opening outside. The first example of the device installed on the portable toilet presented in fig. 1 and fig. 2 consists of a pedal 1 connected with a door leaf 2 by means of a leading mechanism 3 and of a returning unit 4. The leading mechanism 3 constitutes two tracks 5 connected to a plate 6 in a sliding manner. Both tracks 5 are stiffly connected with the door leaf 2 near its out-swing edge 7. The plate 6 is stiffly connected with the pedal 1. The returning unit 4 constitutes a tension spring 8.

The first example presented above is especially useful when leaving the portable toilet cabins because the cabins usually have no handles engaging hands, the door opens outside and is equipped with a strong door closer, a floor 9 of the cabin is often much higher than the ground 10 and the bottom edge 11 of the door leaf 2 is usually so high that it is very difficult to hold the door leaf 2 with the foot resting on the ground 10 outside the cabin. The device is installed on the inner side of the door leaf 2 i.e. inside the cabin. The device makes it easier to leave the cabin but does not allow to go inside the cabin. In the none-pressed position, the pedal 1 is slightly above the floor 9 of the cabin.

The user, when leaving the cabin, steps on the pedal 1 and moving the foot horizontally cracks the door leaf 2 open in such a way that the foot together with the pedal 1 fits in between the door leaf 2 and the threshold 12 and the user can set the foot together with the pedal 1 outside the cabin which blocks the door leaf 2 ajar. The pedal 1 presses on the sole of the user’s foot (thanks to the tension spring 8) which allows the user to move both feet, all the time keeping contact with the pedal 1 and being in control of the door leaf 2. The user can easily open the door leaf 2 in such a way that when he/she takes the foot from the pedal 1 at the same time releasing the door leaf 2, he/she will not get hit by the door leaf 2 as a result of a door closer activity. Once the foot is off the pedal 1, the tension spring 8 will move the device back to the none-pressed position and the door closer will shut the door leaf 2.

The second example of the device installed in the sanitary cabin presented in fig. 3-6 can be used only when the bottom edge 11 of a door leaf 2 is on a height allowing the user to slide the foot underneath. It consists of a pedal 1 connected with the door leaf 2 by means of a leading mechanism 3 and of a returning unit 4. The leading mechanism 3 constitutes two leading rods 13 connected in a sliding manner with two sliding bushes 14. The leading rods 13 are stiffly connected with the bottom part of the door leaf 2, near its out-swing edge 7. The sliding bushes 14 are stiffly connected with the pedal 1. The returning unit 4 constitutes a tension spring 8.

The second example presented above is especially useful in sanitary cabins because the cabins often feature the door leaf 2 of which the bottom edge 11 is on a height allowing the user to slide the foot underneath and the cabin usually has no threshold and door closer.

The user, when opening the unlocked door, steps on the pedal 1 and swings the door leaf 2 to a chosen position. The pedal 1 presses on the sole of the user’s foot (thanks to the tension spring 8) which allows the user to move both feet, all the time keeping contact with the pedal 1 and being in control of the door leaf 2.

The third example of the device presented in fig. 7-13 can also be used only when the bottom edge 11 of a door leaf 2 is on a height allowing the user to slide the foot underneath. It consists of a pedal 1 connected with the door leaf 2 by means of a leading mechanism 3, of a returning unit 4 and a shifting unit 15. The leading mechanism 3 constitutes one leading rod 13 connected in a sliding manner with a sliding bush 14. The leading rod 13 is stiffly connected with the ~ bottom part of the door leaf 2, near its out-swing edge 7. The sliding bush 14 is stiffly connected with the pedal 1. The returning unit 4 constitutes a tension spring 8. The leading mechanism 3 has a built-in shifting unit 15 consisting of two shifting grooves 16 cut in the leading rod 13 and two shifting pegs 17 stiffly connected with the sliding bush 14.

The third example presented above is especially useful in portable cabins because the cabins often feature the door leaf 2 of which the bottom edge 11 is on a height allowing the user to slide the foot underneath and there is no gap under the bottom edge 11 in a closed position, as in case of sanitary cabins, but a very high threshold 12 which combined with a strong door closer makes it difficult to apply the second example.

The user, when going into the cabin, steps on the pedal 1 lowering it and as a result the shifting groves 16 cooperating with the shifting pegs 17 make the sliding bush 14 and the pedal lspin around the axis of the leading rod 13 and move the pedal 1 towards the inner side of the door leaf 2. The user can crack the door leaf 2 open through a horizontal foot movement and the pedal 1 pressing on the threshold 12 helps to open the door leaf 2. In a pressed position the door leaf 2 is ajar and the user’s foot together with the pedal 1 is in the space between the door leaf 2 and the door frame 18. This position makes it much easier to continue opening the door leaf 2. As in the previous examples, the user can move both feet, all the time being in control of the door leaf 2.

The fourth example of the device presented in fig. 14-17 consists of a pedal 1 connected with a door leaf 2 by means of a leading mechanism 3, of a returning unit 4 and a shifting unit 15. The leading mechanism 3 constitutes a leading bush 19 and a sliding rod 20. The leading bush 19 is stiffly connected with the bottom part of the door leaf 2, near its out-swing edge 7. The sliding rod 20 is stiffly connected with the pedal 1. The returning unit 4 constitutes a tension spring 8. The WO 2021/049959 leading mechanism 3 has a built-in shifting unit 15, which constitutes a thread connection 21 consisting of an inner thread in the leading bush 19 and a cooperating outer thread on the sliding rod 20. The pitch of the thread connection 21 is so large that the vertical movement of the sliding rod 20, being equal to the maximum level of stepping on the pedal 1 and lowering it from the top none- pressed position to the bottom pressed position, makes the sliding rod 20 spin less than once, but moves the pedal 1 from the outer side of the door leaf 2 to its inner side.

The user, when going into the toilet, steps on the pedal 1 lowering it and the thread connection 21 makes the sliding rod 20 and the pedal 1 spin around the axis of the leading bush 19. The pedal 1 moving around the out-swing edge 7 of the door leaf 2, goes towards the inner part of the door leaf 2. The user can open the door leaf 2 through a horizontal foot movement and the pedal 1 pressing on the door frame 18 helps to open the door leaf 2. In a pressed position the door leaf 2 is ajar and the user’s foot together with the pedal 1 is in the space between the door leaf 2 and the door frame 18. This position makes it much easier to continue opening the door leaf 2.As in the previous examples, the user can move both feet, all the time being in control of the door leaf 2.

The fifth example of the device presented in fig. 18-20 consists of a pedal 1 connected with a door leaf 2 by means of a leading mechanism 3, of a returning unit 4 and a shifting unit 15. The door leaf 2 has a mobile part 22 connected with the door leaf 2 by means of hinges 28 and when the door is not closed, the mobile part 22 can swing towards the inner side. The leading mechanism 3 consists of a pivot 23 stiffly connected with the mobile part 22 and of a pedal arm 24. The pivot 23 is connected with the pedal arm 23 in a spinning manner. The returning unit 4 consists of a tension spring 8 and a flexible slat 25. One end of the tension spring 8 is fixed to the pedal arm 24 and the other end is connected with the mobile part 22 and makes the pedal 1 move back to the top none-pressed position. One end of the flexible slat 25 is stiffly connected with the door leaf 2 and the other end presses on the mobile part 22 making it move back to the surface of the door leaf 2. The shifting unit 15 consists of a shifting arm 26, a shifting cam 27 and the mobile part 22. The shifting arm 26 is connected in a spinning manner with the pivot 23 and also stiffly connected with the pedal arm 24. The end of the shifting arm 26 cooperates with the shifting cam 27 which is stiffly connected with the door leaf 2.

The user, when going into the toilet, steps on the pedal 1 which makes the pedal arm 24 spin around the pivot 23 and lower the pedal 1. It causes a simultaneous spin of the shifting arm 26 around the pivot 23 and pressure of the shifting arm 26 on the shifting cam 27 resulting in the mobile part 22 and the pedal 1 swinging towards the inner side of the door leaf 2. The user can open the door leaf 2 through a horizontal foot movement and the mobile part 22pressing on the threshold 12 helps the user to open the door leaf 2. In a pressed position the door leaf 2 is ajar and the user’s foot together with the mobile part 22 and the pedal 1 is in the space between the door leaf 2 and the door frame 18. This position makes it much easier to continue opening the door leaf 2. As in the previous examples, the user can move both feet, all the time being in control of the door leaf 2. It is advantageous to use the element which is not presented in the pictures and which blocks the mobile part 22 in the surface of the door once the pedal 1 is pressed.

A cut-out 29 in a door frame 18 presented in fig. 21-25 can be an improvement for the abovementioned examples of the device, especially for the first and second examples. The cut-out 29 in the door frame 18 should be made in such a way so that the uncut part of the door frame 18 has the surface adhering to a door leaf 2 in the closed position which means that the cut-out 29 should not make a hole in the closed door. The cut-out 29 presented in fig. 21-23 is made in a lock beam 30 of a portable toilet. If a pedal 1 is not accessible from the outer side of the door leaf 2, it is beneficial when the cut-out 29 is slightly above the pedal 1 as it makes it easier to slide the foot on the pedal 1 once the user cracks the door leaf 2 open. The cut-out 29 presented in fig. 24 and fig. 25 is made in a threshold 12 of a portable toilet. The cut-out 29 can also be applied to the door with no pedal 1. For the door equipped with a handle latch, it is beneficial to also install in the cut-out 29 a pedal combined with a mechanism pulling the latch from a door frame - it would enable the user to open the door without using a handle (these versions have not been presented in the pictures).

The user, when going into the toilet, slides the foot in the cut-out 29 and through the contact of the foot with the door leaf 2, or the pedal 1 , or any other element connected with the door leaf 2, he/she opens the door leaf 2 by making a horizontal movement of the foot. In the simplified versions of the device, the shifting unit 15 can move the pedal 1 not into the space between the door frame 18 and the slightly open door leaf 2 but only towards this space to make it more accessible from the side of the door leaf 2 where the user intends to go.

In the examples of the device featuring the shifting unit 15, it is beneficial to apply flexible connections, which have not been presented in the pictures, when transmitting the move from the shifting unit 15, so that when the door leaf 2 is closed, the shifting unit 15 does not make any damages to other elements but only increases the tension in the flexible connection.

As pedals 1 protruding beyond the surface of the door may cause injuries, it is beneficial to install them in such a way that the none-pressed pedals adhere as close as possible to a door leaf 2 and easily fold towards the door leaf 2, and only after stepping on them, they unfold and block in the horizontal or close-to- horizontal position.

As it is advantageous to be able to move the pressed pedal 1 on the floor 9 or the ground 10, it is beneficial when the bottom of the pedal 1 has a special surface which makes it easier to move (e.g. runner, or wheel, or wheels), but self-locking when pressed with enough force.

It is beneficial in all examples when as many elements (tracks 5, leading bushes 19, leading rods 13, etc.) as possible are located not beside the door leaf 2, as it has been presented in the pictures only for more clarity, but in the hollows of the door leaf 2, or when the elements are built inside the door leaf 2.