A device for seating a person in an airplane

Abstract

The device for seating a person in an airplane is a Cabin Attendant Seat (CAS) and an On- Board wheelchair (OBW) for transporting passengers with mobility limitations from their seat to the lavatory or alike. The device for seating a person in an airplane is a A-T type seat, designed for installation on forward lavatory monument on OEM CAS attachment points, located at the front end of the aircraft cabin. The device for seating a person in an airplane is suitable for both narrowbody and widebody aircrafts.

Description

[0001] A DEVICE FOR SEATING A PERSON IN AN AIRPLANE

[0002] TECHNICAL FIELD

[0003] The invention relates to a device for seating a person in an airplane and in particular to a device having cabin attendant seat and on-board foldable wheelchair operation modes.

[0004] BACKGROUND ART

[0005] Airline passengers requiring a wheelchair are generally boarded first on an airplane with the assistance of flight attendants and transferred from a specially designed wheelchair available in airport facilities. It is impossible for wheelchair users to reach lavatory without a dedicated onboard wheelchair, as conventional and airport wheelchairs are not used / kept during flight.

[0006] US patent No.: US4678202 discloses a folding chair assembly for dual use as a foldable wheelchair or a flight attendant's seat onboard a commercial passenger airplane. The folding chair assembly can be manipulated into any of the following modes: fully retracted into a compact assembly that can be stowable secured by a plurality of catches against a vertical wall in the passenger compartment of an aircraft. With the chair assembly still secured to the wall, the seat pan is pulled down against a seat return spring and is usable as a flight attendant's seat. When the folded chair assembly is completely detached from the plurality of retaining catches and fully extended it functions as a foldable wheelchair that is usable down the aisles of commercial passenger aircraft. Main disadvantages of the disclosed object is impeded manoeuvrability, unstable structure and lack of compliance with CS-25, JAR-25, EEL, SEA AS8049, SEA ARP5526 regulations.

[0007] The present invention is dedicated to overcoming of the above shortcomings and for producing further advantages over prior art.

[0008] BRIEF DESCRIPTION OF THE INVENTION

[0009] The device for seating a person in an airplane is a Cabin Attendant Seat (CAS) and an On- Board wheelchair (OBW) for transporting passengers with mobility limitations from their seat to the lavatory or alike. The device for seating a person in an airplane is a A-T type seat, designed for installation on forward lavatory monument on OEM CAS attachment points, located at the front end of the aircraft cabin. The device for seating a person in an airplane is suitable for both narrowbody and widebody commercial aircrafts. The device for seating a person in an airplane considered both CS25 and §382.65 requirements. Moreover, it is compliant with SAE international requirement ARP4120 "Foldable On-Board wheelchairs for Passengers with Disabilities". There is an extra requirement that state about the CAS and OBW different seat pan height.

[0010] BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Features of the invention believed to be novel and inventive are set forth with particularity in the appended claims. The invention itself, however, may be best understood by reference to the following detailed description of the invention, which describes exemplary embodiments, given in non-restrictive examples, of the invention, taken in conjunction with the accompanying drawings, in which:

[0012] Fig. 1 shows sample narrowbody aircraft cabin layout with a regular OEM cabin attendant seat and the device according to the invention in a cabin attendant seat mode.

[0013] Fig. 2 shows a regular OEM cabin attendant seat and the device according to the invention in a cabin attendant seat mode.

[0014] Fig. 3 shows side view of the device according to the invention in a cabin attendant seat mode, in folded state.

[0015] Fig. 4 shows front view of the device according to the invention in a cabin attendant seat mode, in folded state.

[0016] Fig. 5 shows side view of the device according to the invention in a cabin attendant seat mode, in un-folded state.

[0017] Fig. 6 shows wall mount bracket of the device according to the invention (headrest not shown).

[0018] Fig. 7 shows wall mount bracket of the device according to the invention (head rest shown). Bold arrow indicators show direction of mounting the headrest to the wall mount frame.

[0019] Fig. 8 shows footrest and armrest movement (direction is indicated by bold arrow indicators) of the device according to the invention when converting of the device according to the invention from OBW mode to CAS mode. Fig. 9 shows fixation step (bald indicator arrows show motion direction) of the device according to the invention to the wall mounting bracket when converting of the device according to the invention from OBW mode to CAS mode.

[0020] Fig. 10 shows seat pan movement (bold arrow indicator indicating direction of motion) of the device according to the invention when converting of the device according to the invention from OBW mode to CAS mode.

[0021] Fig. 1 1 shows spring system of the seat of the device according to the invention.

[0022] Fig. 12 shows lap belt and buckles of the seat of the device according to the invention.

[0023] Fig. 13 shows foldable wheelchair when the device according to the invention is in OBW mode.

[0024] Fig. 14 shows foldable wheelchair when the device according to the invention is in OBW mode.

[0025] Fig. 15 shows release button and push step to release the folded device according to the invention for converting from CAS to OBW.

[0026] Fig. 16 shows removal of the foldable wheelchair from the wall mount when converting the device according to the invention from CAS to OBW.

[0027] Preferred embodiments of the invention will be described herein below with reference to the drawings. Each figure contains the same numbering for the same or equivalent element.

[0028] DETAILED DESCRIPTION OF THE INVENTION

[0029] It should be understood that numerous specific details are presented in order to provide a complete and comprehensible description of the invention embodiment. However, the person skilled in art will understand that the embodiment examples do not limit the application of the invention which can be implemented without these specific instructions. Well-known methods, procedures and components have not been described in detail for the embodiment to avoid misleading. Furthermore, this description should not be considered to be constraining the invention to given embodiment examples but only as one of possible implementations of the invention.

[0030] Short description of regulations: CS-25 - European regulation for the certification of large aeroplanes

[0031] JAR-25 - Joint Aviation Requirements for Large Aeroplanes

[0032] EEL - Emergency Equipment List

[0033] SEA AS8049 - Performance Standard for Seats in Civil Rotorcraft and Transport Airplanes

[0034] SEA ARP5526 - Aircraft Seat Design Guidance and Clarifications

[0035] The device for seating a person in an airplane according to the invention is a device that can be used as a cabin attendant seat or an on-board wheelchair, i.e. has two modes of operation: Cabin Attendant Seat (CAS) as well as On-Board wheelchair (OBW).

[0036] The device (1 ) for seating a person in an airplane according to the invention comprises a wall mount (2) and a foldable wheelchair (3).

[0037] The wall mount (2) comprises a frame (2.1 ), retracking spools with shoulder belts (2.3) and a headrest (2.4).

[0038] The wall mount frame (2.1 ) comprises six attachment points (2.5) for attaching the wall mount frame (2.1 ) to a lavatory wall monument (MW). The attachment points (2.5) being positioned so that they would fit the original equipment manufacturers (OEM) cabin attendant seat attachment points. The wall mount frame (2.1 ) further comprises five attachment protrusions (2.6) for mounting five anchoring slots (3.1 1 ) of the foldable wheelchair (3) and additional attachment protrusion with locking feature provision (2.8) for mounting anchoring slot (3.1 1 ) with locking mechanism (3.5) of the foldable wheelchair (3). Each anchoring slot (3.1 1 ) interfaces with a respective attachment protrusion (2.6, 2.8). The wall mount frame (2.1 ) further comprises two armrest slots (2.7’, 2.7”) each having depth for accommodating at least part of a respective armrest (3.13’, 3.13”). Each of the armrest slots (2.7’, 2.7”) are formed in respective legs (2.12’, 2.12”) of the wall mount frame (2.1 ) and has length at least equal to the length of the armrest (3.13’, 3.13”). The length of the armrest slots (2.7’, 2.7”) is in parallel with length of the wall mount frame (2.1 ).

[0039] The spools with shoulder belts (2.3’, 2.3”) are mounted on the top end (2.1 1 ) of the wall mount frame (2.1 ) and not on the foldable wheelchair frame (3.1 ).

[0040] The headrest (2.4) is mounted on the top end (2.1 1 ) of the wall mount frame (2.1 ), above the spools with shoulder belts (2.3’, 2.3”) and not on the foldable wheelchair frame (3.1 ) increasing stability and manoeuvrability of the foldable wheelchair (3) when in use. The foldable wheelchair (3) comprises an anchoring frame (3.1 ) comprising frame legs (3.19’, 3.19”), anchoring slots (3.1 1 ) in the frame legs (3.19’, 3.19”), a backrest (3.12), armrests (3.13’, 3.13”), a push-pull handle (3.14), a lover stabilizing frame (3.15), rear wheels (3.16’, 3.16”) and two or four lower stabilizing frame / rear wheel control arms (3.162’, 3.162”). The foldable wheelchair (3) further comprises two foldable legs (3.2’, 3.2”) each comprising a bottom link (3.2T, 3.21 ”) and an intermediate link (3.22’, 3.21 ”). The foldable wheelchair (3) further comprises a legs (3.2’, 3.2”) stabilization frame (3.23), a footrest (3.24), front wheels (3.25’, 3.25”), passengers legs restraint (3.26) and release buttons (3.27’, 3.27”). The foldable wheelchair (3) further comprises a seat (3.3) with at least one torsion spring (3.31 ) and a two-point restraint system (3.4) with belts (3.4T, 3.41 ”) and a buckle (3.42).

[0041] The anchoring slots (3.1 1 ) are used for anchoring the foldable wheelchair (3) to the wall mount (2). The number of anchoring points on the wall mount (2) is six providing sufficient security and stability for attaching the foldable wheelchair (3) to the wall mount (2) as imposed by regulations for CAS. The anchoring slots (3.1 1 ) are disposed on both sides of the frame (3.1 ) in the frame legs (3.19’, 3.19”) of the foldable wheelchair (3). Each anchoring slot (3.1 1 ) has an open face forming a path for the attachment protrusion (2.6) to be guided in while protruding into the anchoring slots (3.1 1 ) from side of the leg (3.19’, 3.19”) and is configured for mating with the attachment protrusion (2.6) at each point of locking the foldable wheelchair (3) at the wall mount (2). Each anchoring slot (3.1 1 ) comprises an entry mouth (3.1 11 ) for sliding in the attachment protrusion (2.6) from back side (BS) of the frame (3.1 ). The entry mouth (3.1 1 1 ), being the first groove, is carved into the frame leg (3.19’, 3.19”) width-wise and depth-wise forming a groove with a bottom side-sidewall (3.1 12) and a top side-wall (3.1 13). The bottom side-wall (3.1 12) being at a lower position than the top side-wall (3.1 13), viewing from bottom end (BE) of the anchoring frame (3.1 ).

[0042] The top side-wall (3.1 13) is shorter than the bottom side-wall (3.1 12) and is followed by a second groove (3.1 14), stemming upwards from first groove (3.1 1 1 ) and forming a uniform L-shaped path starting at the entry point of the mouth (3.11 1 ) up till the dead-end point of the second grove (3.114) where the dead end point acts as a stop point for the attachment protrusion (2.6) travel and rest point for hanging the foldable wheelchair (3) onto the wall mount (2). The travel L-shaped path and interaction of the anchoring slots (3.1 1 ) with the attachment protrusions (2.6) allow the foldable wheelchair (3) to be mounted on to the wall mount (2) securely. The top side-wall (3.1 13) and the bottom side-wall (3.1 12) are preferably formed to match the form of the respective first sides of the attachment protrusion (2.6) for sliding-in action preferably the respective sides of the attachment protrusion (2.6) slide along the top side-wall (3.1 13) and the bottom side-wall (3.1 12) at the same time at the time when the foldable wheelchair (3) is being mounted on the wall mount (2). The second grove (3.1 14) has width for sliding insertion of the attachment protrusion (2.6) along height of the second grove (3.1 14) essentially without gap between the second sides of the attachment protrusion (2.6) and the side walls of the second grove (3.1 14). The first sides of the attachment protrusion (2.6) are preferably at right angle with second sides of the attachment protrusion (2.6) forming essentially a quadrangular perimeter.

[0043] The backrest (3.12) is positioned between the legs (3.19’, 3.19”) of the anchoring frame (3.1 ) stabilizing the middle to top part of the anchoring frame (3.1 ).

[0044] The armrests (3.13’, 3.13”) are either spring loaded, friction fit or having spring / magnet based positioning feature and are positioned on the sides of the legs (3.19’, 3.19”) of the anchoring frame (3.1 ). In the unfolded state the armrests (3.13’, 3.13”) are at essentially right angle with the anchoring frame (3.1 ) for supporting arms of a user and in non-use state. When the device (1 ) for seating a person in an airplane is being used as cabin assistant seat the armrests (3.13’, 3.13”) are positioned upwards and in parallel with the respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ).

[0045] The push-pull handle (3.14) is spring loaded and positioned between the legs (3.19’, 3.19”) of the anchoring frame (3.1 ). In the unfolded state for pushing the wheelchair (3) the push- pull handle (3.14) is at 70 to 80 degree angle with the anchoring frame (3.1 ) in neutral position. When the device (1 ) for seating person in an airplane is being used as cabin assistant seat the push-pull handle (3.14) are positioned upwards and in parallel with the respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ).

[0046] The lover stabilizing frame (3.15) is positioned at the bottom of the anchoring frame (3.1 ) and interconnects the frame legs (3.19’, 3.19”) and the bottom of the anchoring frame (3.1 ). The bottom side (3.152) of the lover stabilizing frame (3.15) is attached to the bottom of the anchoring frame (3.1 ). The sides (3.151 , 3.153) of the lover stabilizing frame (3.15) are each attached to the respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ). The top side (3.154) of the lover stabilizing frame (3.15) is closing an inner space between the four sides (3.151 , 3.152, 3.153, 3.154) where the inner space accommodates emergency equipment box (2.2) when the device (1 ) for seating a person in an airplane is operating a cabin assistant seat. The lover stabilizing frame (3.15) increases stability and rigidity of the device (1 ) for seating a person in an airplane in both operation modes. Lower stabilizing frame (3.15) is connected to inner side of the bottom links (3.21 ’, 3.21 ”) via independent lower stabilizing frame control arms (not shown) or rear wheel control arms (3.162’, 3.162”) to provide change of height and attachment method to the monument wall (MW) during operation between OBW and CAS modes.

[0047] The rear wheels (3.16’, 3.16”) comprises brakes (not shown) stopping rotation of the rear wheels (3.16’, 3.16”) and are swivelable, and are attached to the bottom of the lower stabilizing frame (3.15) and each rear wheel (3.16’, 3.16”) assembly is connected to inner side of the respective bottom link (3.2T, 3.21 ”) via rear wheel control arms (3.162’, 3.162”) to provide change of distance between rear wheels during operation between OBW and CAS modes.

[0048] Each of the two foldable legs (3.2’, 3.2”) comprises the bottom link (3.21 ’, 3.21 ”) and the intermediate link (3.22’, 3.22”) which are in folded position when the device (1 ) for seating a person in an airplane is in CAS operation mode and in unfolded position the device (1 ) for seating a person in an airplane is in OBW operation mode. Each bottom link (3.21 ’, 3.21 ”) at one end is attached to the bottom of respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ) via an interconnecting shaft (not shown) for rotational motion and at another end to the intermediate link (3.22’, 3.22”) via another interconnecting shaft (not shown) for rotational motion. When in OBW mode, the bottom link (3.21 ’, 3.21 ”) is parallel to the seat side (3.331 ’, 3.331 ”) and the ground of movement of the OBW, and when in CAS mode, the bottom link (3.21 ’, 3.21 ”) is parallel to the leg (3.19’, 3.19”) of the anchoring frame (3.1 ). Each intermediate link (3.22’, 3.22”) at one end is attached to respective bottom link (3.21 ’, 3.21 ”) for rotational motion and at another end to respective side (3.33T, 3.331 ”) of the seat (3.3) via yet another interconnecting shaft (not shown) for rotational motion. When in OBW mode, the intermediate links (3.22’, 3.22”) are parallel to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ) and when in CAS mode, the intermediate links (3.22’, 3.22”) are parallel to the seat (3.3) sides (3.3T, 3.31 ”).

[0049] When the device (1 ) for seating a person in an airplane is being folded for operating as CAS or unfolded for operating as OBW the bottom link (3.2T, 3.21 ”) and the intermediate link (3.22’, 3.22”) of each foldable leg (3.2’, 3.2”) are rotating around respective interconnecting shafts. Each pair of the bottom link (3.21 ’, 3.21 ”) and the intermediate link (3.22’, 3.22”) are being fixed one with respect to another for moving one with respect or another in respective planes, where the respective planes are parallel one to another and are at respective sides (3.331 ’, 3.331 ”) of the seat (3.3).

[0050] The legs’ (3.2’, 3.2”) stabilization frame (3.23) at one side is attached to one intermediate link (3.22’) of one leg (3.2’) and at opposite side is attaches to another intermediate link (3.22”) of another leg (3.2”). The front wheels (3.25’, 3.25”) and the footrest (3.24) are attached to the bottom side of the stabilization frame (3.23), where the bottom side is lower part of the legs’ (3.2’, 3.2”) stabilization frame (3.23). The top side of the legs’ (3.2’, 3.2”) stabilization frame (3.23) is opposite the lower part. The top part, the side parts and the lower part forms an inner free space for accommodating the footrest (3.24) when the device (1 ) for seating a person is in CAS mode. The stabilization frame (3.23) is connected to seat (3.3) via linkage (not shown) and retracts front wheels during operation from OBW to CAS modes to eliminate interference with monument wall (MW).

[0051] The front wheels (3.25’, 3.25”) are swivelable 360 degrees when the device (1 ) for seating a person in airplane is in OBW mode and are automatically lockable to position parallel to the seat (3.3) upper surface (3.332) using proprietary mechanism (not shown).

[0052] The seat’s (3.3) upper surface (3.332) is the surface for seating a user of the device (1 ) for seating a person. The front wheels (3.25’, 3.25”) are equipped with a 360-degree return axis (not shown), which automatically returns the front wheels (3.25’, 3.25”) to their 90 degree angle with respect to the legs (3.2’, 3.2”) of the wheelchair (3) once pressure on them is removed, simply by raising them from the ground.

[0053] When in CAS mode the legs’ (3.2’, 3.2”), stabilization frame (3.23), the front wheels (3.25’, 3.25”) and the footrest (3.24) are positioned under the seat (3.3) and are parallel to the seat (3.3) upper surface (3.332), where the front wheels (3.25’, 3.25”) are positioned at the back end of the seat (3.3) where the back end of the seat (3.3) is attached to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ).

[0054] The emergency equipment box (2.2) is being clear for reaching when the device (1 ) for seating a person in airplane is in CAS mode. The seat (3.3) is attached to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ) via shafts (not shown) for rotation motion of the seat (3.3) with respect to both legs (3.19’, 3.19”) of the anchoring frame (3.1 ).

[0055] The user’s legs’ restraint (3.26) is positioned in the free space of the stabilization frame (3.23) between legs’ (3.2) of the device (1 ) for seating a person in airplane. Each of two release buttons (3.27’, 3.27”) are disposed at respective interconnecting node between the respective intermediate link (3.22’, 3.22”) and the seat side (3.331 ’, 3.331 ”). The release buttons (3.27’, 3.27”) when pressed directly or indirectly via interconnecting mechanism releases locks of the locked position of the intermediate links (3.22’, 3.22” ) and the sides (3.33T, 3.331 ”) of the seat (3.3) when the device (1 ) for seating a person in airplane is in unfolded OBW mode. In the said mode if the buttons (3.27’, 3.27”) are not pressed, the both intermediate links (3.22’, 3.22”) are locked with the respective side (3.331 ’, 3.33T) of the seat (3.3).

[0056] The torsion spring (3.31 ) of the seat (3.31 ) is located at the back of the seat (3.3) and drives the seat (3.3) to unfold when the device (1 ) for seating a person in airplane is being transitioned from CAS mode to OBW mode.

[0057] The two-point restraint system (3.4) with the lap belts (3.4T, 3.41 ”) and the buckle (3.42) are located the back of the seat (3.3), between the back rest (3.12) bottom side and the back side of the seat (3.3). The front side of the seat (3.3) being the side for abutting the user’s legs.

[0058] The lap belts (3.4T, 3.41 ”) and the shoulder belts (2.3’, 2.3”) of the restraint system are interconnectable at a rotary buckle which is positionable in front of a user.

[0059] The footrest (3.24) maintains sufficient clearance from the floor when the device (1 ) for seating a person in airplane is in OBW mode. The footrest (3.24) operates like a folding table of an airplane with option to include additional structural supports.

[0060] The seat (3.3) changes height depending on the operation mode. In CAS mode the height of the seat (3.3) is typical of other OEM products and in OBW mode the height increases to support passenger seat height. A seat pan (not show) supporting the seat cushion is preferably CNC machined from solid aluminium and lighten where possible to stay structurally integral and to comply with Emergency, Dynamic, Flight, Abuse and Gust loads requirements.

[0061] The seat (3.3) is always spring loaded until it is not transferred to OBW mode where release buttons (3.27’, 3.27”) prevent movement. The spring always return the seat (3.3) pan back, once in CAS mode.

[0062] The spring-loaded handle (3.14) is stored 70 to 80 degree angle with respect to the anchoring frame (3.1 ) when not in use eliminating the need for extra operation by cabin crew when pushing the foldable wheelchair (3) back to the monument wall (MW). The handle (3.14) is spring-loaded with an angle that enables users to simply press the product against the wall without needing to hold the handles beforehand.

[0063] Installation of the device for seating a person in an airplane comprises the following steps:

[0064] 1 ) Fixing the wall mount (2) onto monument wall (MW) in six standard CAS fixation points using standard NAS1305-6 screws. The headrest (2.4) being installed onto the wall mount (2) in advance using fixation means such as Velcro or similar.

[0065] 2) While the device (1 ) for seating a person in an airplane is in OBW mode the armrests (3.13) and footrest (3.24) are folded before connecting the foldable wheelchair (3) to wall mount (2).

[0066] 3) Attaching the device (1 ) for seating a person in an airplane to the wall mount (2) via six attachment points positioned in the frame (2.1 ) of the wall mount (2).

[0067] 4) Buttons (3.27’, 3.27”) on each side of the foldable wheelchair (3) or an interconnecting mechanism is operated to release the foldable wheelchair (3) legs (3.2’, 3.2”).

[0068] 5) Rotating the foldable wheelchair (3) legs (3.2’, 3.2”) towards the monument wall (MW) until the top position is reached. The seat (3.3) should move downwards, consequently, the anchoring frame (3.1 ) lowers, and its dovetails travel inside the shaped slots downwards, firmly securing the device (1 ) for seating a person in an airplane to the monument wall (MW).

[0069] The strapping mechanism consists of 4-point restraint system in compliance with ETSO- 114.

[0070] The retractable armrests (3.13’, 3.13”), the footrest (3.24), the leg restraint (3.26) and the 4- point restraint system limit unnecessary body movement and secure a handicapped person during transportation.

[0071] To convert the device for seating a person from CAS to OBW configuration, the following steps are executed:

[0072] 1 ) Pushing the release buttons (3.27’, 3.27”) directly or via interconnecting mechanism handle (not shown) and pulling the foldable wheelchair legs (3.2’, 3.27”) down until clicking sound is heard from the buttons (3.27’, 3.27”).

[0073] 2) Once the seat (3.3) is in 90 degrees fixed position detaching OBW from the wall mount (2) and pulling down the armrests (3.13’, 3.13”) and the footrest (3.24) after removing the foldable wheelchair (3) from the wall mount (2). The device for seating a person according to the invention complies with On - Board Wheelchair regulations as indicated in Table 1 .

[0074]

[0075] The device (1 ) for seating a person according to the invention complies with Cabin Attendant Seat regulations as indicated in Table 2. The device (1 ) for seating a person according to the invention complies with CS-25 regulation as indicated in Table 3. This regulation is designed from Cabin Attendant Seats. The device (1 ) for seating a person according to the invention is designed with all regulations in mind e.g. there is a provision for EEL, which is required for all CAS products.

[0076] The device for seating a person according to the invention complies with SAE AS8049 (Performance Standard for Seats...) and SAE ARP5526 (Aircraft Seat Design Guidance and Clarifications) regulations. Although numerous characteristics and advantages together with structural details and features have been listed in the present description of the invention, the description is provided as an example fulfilment of the invention. Without departing from the principles of the invention, there may be changes in the details, especially in the form, size and layout, in accordance with most widely understood meanings of the concepts and definitions used in claims.

Claims

CLAIMS1. A device for seating a person in an airplane comprising a wall mount and a foldable wheelchair characterised in that the wall mount (2) comprises a frame (2.1 ), retracking spools with torso belts (2.3’, 2.3”), emergency equipment box (2.2) and a headrest (2.4), where the wall mount frame (2.1 ) comprises six attachment points (2.5) for attaching the wall mount frame (2.1 ) to monument wall (MW), five attachment protrusions (2.6) for mounting five anchoring slots (3.1 1 ) of the foldable wheelchair (3), additional attachment protrusion with locking feature provision (2.8) for mounting anchoring slot (3.1 1 ) with locking mechanism (3.5) of the foldable wheelchair (3), two armrest slots (2.7’, 2.7”) each having depth for accommodating at least part of a respective armrest (3.13’, 3.13”), where the foldable wheelchair (3) comprises an anchoring frame (3.1 ) comprising frame legs (3.19’, 3.19”), anchoring slots (3.1 1 ) in the frame legs (3.19’, 3.19”), a backrest (3.12), armrests (3.13’, 3.13”), a push-pull handle (3.14), a lower stabilizing frame (3.15), rear wheels (3.16’, 3.16”) and two or four lower stabilizing frame / rear wheel control arms (3.162’, 3.162”), two foldable legs (3.2’, 3.2”) each comprising a bottom link (3.21 ’, 3.21 ”) and an intermediate link (3.22’, 3.22”), the foldable wheelchair (3) further comprises two legs (3.2’, 3.2”), a stabilization frame (3.23), a footrest (3.24), front wheels (3.25’, 3.25”), passengers legs’ restraint (3.26), foldable wheelchair (3) fixed position release buttons (3.27’, 3.27”), a seat (3.3) with at least one torsion spring (3.31 ) or alternatively gas springs mounted in frame legs (3.19’, 3.19”) and a two-point restraint system (3.4) with belts (3.41 ’, 3.41 ”) and a buckle (3.42).

2. The device (1 ) according to claim 1 , where each of the armrest slots (2.7’, 2.7”) are formed in respective legs (2.12’, 2.12”) of the wall mount frame (2.1 ) and has length at least equal to the length of the armrests (3.13’, 3.13”), where the length of the armrest slots (2.7’, 2.7”) is in parallel with length of the wall mount frame (2.1 ).

3. The device (1 ) according to claim 1 or 2, where the anchoring slots (3.1 1 ) are disposed on both sides of the anchoring frame (3.1 ) in the frame legs (3.19’, 3.19”) where each anchoring slot (3.1 1 ) has an open face forming a path for the attachment protrusion (2.6) and attachment protrusion with locking feature provision (2.8) to be guided in while protruding into the anchoring slots (3.1 1 ) from side of the leg (3.19’, 3.19”) and is configuredfor mating with the attachment protrusions (2.6, 2.8) at each point of locking the foldable wheelchair (3) at the wall mount (2), where each anchoring slot (3.1 1 ) comprises an entry mouth (3.1 1 1 ) for sliding in the attachment protrusion (2.6) from back side (BS) of the frame (3.1 ), the entry mouth (3.11 1 ), being the first groove carved into the frame leg (3.19’, 3.19”) width-wise and depth-wise forming a groove with a bottom side-sidewall (3.1 12) and a top side-wall (3.1 13), where the top side-wall (3.1 13) is shorter than the bottom side-wall (3.1 12) and is followed by a second groove (3.1 14), stemming upwards from the groove of the first groove (3.1 1 1 ) and forming a uniform L-shaped path starting at the entry point of the mouth (3.11 1 ) up till the dead-end point of the second grove (3.114) where the dead end point acts as a stop point for the attachment protrusion (2.6, 2.8) travel and rest point for hanging the foldable wheelchair (3) onto the wall mount (2).

4. The device (1 ) according to claim 3, where the top side-wall (3.1 13) and the bottom sidewall (3.1 12) are formed to match the form of the respective first sides of the attachment protrusion (2.6) for sliding-in action preferably the respective sides of the attachment protrusion (2.6) slide along the top side-wall (3.1 13) and the bottom side-wall (3.1 12) at the same time at the time when the foldable wheelchair (3) is being mounted on the wall mount (2), where the second grove (3.1 14) has width for sliding insertion of the attachment protrusion (2.6) along height of the second grove (3.114) without gap between the second sides of the attachment protrusion (2.6) and the side walls of the second grove (3.1 14).

5. The device (1 ) according to any previous claim, where the armrests (3.13’, 3.13”) are either spring loaded, friction fit or having spring / magnet based positioning feature and are positioned on the sides of legs (3.19’, 3.19”) of the anchoring frame (3.1 ), where in the unfolded state the armrests (3.13’, 3.13”) are at essentially right angle with the anchoring frame (3.1 ) for supporting arms of a user and when the device (1 ) for seating a person in an airplane is being used as cabin assistant seat the armrests (3.13’, 3.13”) are positioned upwards and in parallel with the respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ).

6. The device (1 ) according to any previous claim, where the push-pull handle (3.14) is spring loaded and positioned between the legs (3.19’, 3.19”) of the anchoring frame (3.1 ), where in the unfolded state for pushing the wheelchair (3) the push-pull handle (3.14) is at 70 to 80 degree angle with the anchoring frame (3.1 ) in neutral position and when the device(1 ) for seating person in an airplane is being used as cabin assistant seat the push-pull handle (3.14) is positioned upwards and in parallel with the respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ).

7. The device (1 ) according to any previous claim, where the lower stabilizing frame (3.15) is positioned at the bottom of the anchoring frame (3.1 ) and interconnects the frame (3.1 ) legs (3.19’, 3.19”) and the bottom of the anchoring frame (3.1 ), where the bottom side (3.152) of the lover stabilizing frame (3.15) is attached to the bottom of the anchoring frame(3.1 ), the sides (3.151 , 3.153) of the lover stabilizing frame (3.15) are each attached to the respective leg (3.19’, 3.19”) of the anchoring frame (3.1 ), the top side (3.154) of the lower stabilizing frame (3.15) is closing an inner space between the four sides (3.151 , 3.152, 3.153, 3.154), were lower stabilizing frame (3.15) is connected to inner side of the bottom links (3.2T, 3.21 ”) via independent lower stabilizing frame control arms (not shown) or rear wheel control arms (3.162’, 3.162”) to provide change of height and attachment method to the monument wall (MW) during operation between OBW and CAS modes.

8. The device (1 ) according to any previous claim, where the rear wheels (3.16’, 3.16”) comprise brakes, are swivelable, and are attached to the bottom of the lower stabilizing frame (3.15) and each rear wheel (3.16’, 3.16”) assembly is connected to inner side of the respective bottom link (3.2T, 3.21 ”) via rear wheel control arms (3.162’, 3.162”) to provide change of distance between rear wheels during operation between OBW and CAS modes.

9. The device (1 ) according to any previous claim, where each of the two foldable legs (3.2’, 3.2”) of the wheelchair (3) comprises the bottom link (3.21 ’, 3.21 ”) and the intermediate link (3.22’, 3.22”) which are in folded position when the device (1 ) for seating a person in an airplane is in CAS operation mode and in unfolded position the device (1 ) for seating a person in an airplane is in OBW operation mode, where each bottom link (3.2T, 3.21 ”) at one end is attached to the bottom of respective leg (3.19’, 3.19”) of the anchoring frame(3.1 ) via an interconnecting shaft for rotational motion and at another end to the respective intermediate link (3.22’, 3.22”) via another interconnecting shaft for rotational motion, where when in OBW mode, the bottom links (3.21 ’, 3.21 ”) are parallel to the seat sides (3.33T, 3.331 ”) and the ground of movement of the OBW, and when in CAS mode, the bottom links (3.21 ’, 3.21 ”) are parallel to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ), where each intermediate link (3.22’, 3.22”) at one end is attached to respective bottom link (3.21 ’, 3.21 ”) for rotational motion and at another end to respective side (3.33T, 3.331 ”) of the seat (3.3)via yet another interconnecting shaft for rotational motion, where when in OBW mode, the intermediate links (3.22’, 3.22”) are parallel to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ) and when in CAS mode, the intermediate links (3.22’, 3.22”) are parallel to the seat (3.3) sides (3.331 ’, 3.331 ”), where each pair of the bottom link (3.21 ’, 3.21 ”) and the intermediate link (3.22’, 3.22”) are being fixed one with respect to another for moving one with respect to another in respective planes, where the respective planes are parallel one to another and are at respective sides (3.331 ’, 3.331 ”) of the seat (3.3).

10. The device (1 ) according to any previous claim, where the legs’ (3.2) stabilization frame (3.23) at one side is attached to one intermediate link (3.22’) of one leg (3.2’) and at opposite side is attached to another intermediate link (3.22”) of another leg (3.2”), where the front wheels (3.25’, 3.25”) and the footrest (3.24) are attached to the bottom side of the stabilization frame (3.23), where top part, the side parts and the lower part forms an inner free space for accommodating the footrest (3.24) when the device (1 ) for seating a person is in CAS mode, where the stabilization frame (3.23) is connected to seat (3.3) via linkage (not shown) and retracts front wheels during operation from OBW to CAS modes to eliminate interference with monument wall (MW).

11. The device (1 ) according to any previous claim, where the front wheels (3.25’, 3.25”) comprises a 360-degree return axis and are swivelable 360 degrees when the device (1 ) for seating a person in airplane is in OBW mode and are automatically lockable to position parallel to the seat’s (3.3) upper surface (3.332) when the device (1 ) is in CAS mode.

12. The device (1 ) according to any previous claim, where when in CAS mode the legs (3.2’, 3.2”) of the foldable wheelchair (3), stabilization frame (3.23), the front wheels (3.25’, 3.25”) and the footrest (3.24) are positioned under the seat (3.3) and are parallel to the seat (3.3) upper surface (3.332), where the front wheels (3.25’, 3.25”) are positioned at the back end of the seat (3.3) where the back end of the seat is attached to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ), where the seat (3.3) is attached to the legs (3.19’, 3.19”) of the anchoring frame (3.1 ) via shafts for rotation motion of the seat (3.3) with respect to both legs (3.19’, 3.19”) of the anchoring frame (3.1 ).

13. The device (1 ) according to any previous claim, where each of two release buttons (3.27’, 3.27”) are disposed at respective interconnecting node between the respective intermediate link (3.22’, 3.22”) and the seat side (3.331 ’, 3.331 ”).

14. The device (1 ) according to any previous claim, the two-point restraint system (3.4) with lap belts (3.4T, 3.41 ”) and the buckle (3.42) are located at the back of the seat (3.3), between the back rest (3.12) bottom side and the back side of the seat (3.3) and the lap belts (3.4T, 3.41 ”) and the shoulder belts (2.3’, 2.3”) of the restraint system are interconnectable at a rotary buckle (3.42).

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