US20020079727A1 - Armchair with seatlift - Google Patents

Armchair with seatlift Download PDF

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Publication number
US20020079727A1
US20020079727A1 US09/745,827 US74582700A US2002079727A1 US 20020079727 A1 US20020079727 A1 US 20020079727A1 US 74582700 A US74582700 A US 74582700A US 2002079727 A1 US2002079727 A1 US 2002079727A1
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Prior art keywords
liftchair
ground
seat
automatically
frame
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Abandoned
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US09/745,827
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Poul Hoegh
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Individual
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Individual
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Priority to US09/745,827 priority Critical patent/US20020079727A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1054—Large wheels, e.g. higher than the seat portion

Definitions

  • the present invention relates to aids for persons who fall on the floor and are too weak to get up again on their own.
  • the current invention describes and relates to an improvement on this prior invention and more particularly refers to a method of providing wheels to the liftchair in such a manner, that the liftchair automatically becomes mobile upon the seat being moved upward, such as, for instance, when it is desired to move the liftchair from one place to another, yet provides that the liftchair automatically becomes solidly stationary on the ground just prior to the lifting operation, during the time a person may be transferring from the ground onto the seat and until the person is firmly located on the seat, ready to be lifted up to a normal seated position in the liftchair.
  • the liftchair Upon the seat thereafter being activated to move upwards, the liftchair is automatically rendered mobile again, by contact between the seat and the ground being automatically eliminated.
  • the liftchair is supplied with wheels, that may be small wheels located, for instance, one wheel in each lower corner of the liftchair frame. Some of the wheels may be swivel wheels, located in such a manner that allows the seat to go down between the wheels to the ground and if desired, slightly down beyond the wheels, so that the seat will lift the wheels slightly off the ground, automatically leaving the seat and the whole liftchair frictionally anchored to the ground due to the weight of the liftchair, ready for the safe transfer of a person from the ground onto the seat.
  • wheels may be small wheels located, for instance, one wheel in each lower corner of the liftchair frame.
  • Some of the wheels may be swivel wheels, located in such a manner that allows the seat to go down between the wheels to the ground and if desired, slightly down beyond the wheels, so that the seat will lift the wheels slightly off the ground, automatically leaving the seat and the whole liftchair frictionally anchored to the ground due to the weight of the liftchair, ready for the safe transfer of a person from the ground onto the seat.
  • the wheelchair wheels extend down a little beyond the bottom of the liftchair frame allowing the wheels to contact and rest on the floor while the seat is in it's upper position, whereby the liftchair becomes mobile.
  • the seat Upon the seat being actuated to go vertically down to the ground, the seat is adapted to go down between the wheelchair wheels to the ground and slightly down beyond the wheels, so that the seat will lift the wheelchair wheels slightly off the ground in it's down position, leaving the seat and the liftchair automatically anchored to the ground by the full combined weight of the liftchair and wheels , while a person is transferring onto the seat, thereby automatically keeping the liftchair immobile to it's fullest extent during this transfer operation, allowing a person safely to transfer from the ground onto the seat of the liftchair without the liftchair moving away from the person during this operation.
  • FIG. 1 is a perspective view of an armchair with a seatlift, as shown in applicants issued U.S. Pat. No. 5,816,655 in the following called a “liftchair”, with one preferred embodiment of the improvement of the present invention located thereon, comprising wheels attached to the base of the frame of the liftchair, shown with the liftchair in it's immobile condition with the seat in it's lowest position, resting on the ground.
  • FIG. 2 is a side elevation of a liftchair with another embodiment of the improvement of the present invention located thereon, comprising wheelchair type wheels rotatably attached to the sides of the frame of the liftchair and one or two swivel wheels attached to the rear of the liftchair, shown in it's mobile condition with it's seat in it's upper position, out of contact with the ground and the wheels in contact with the ground.
  • a handbrake is located on the frame to control mobility.
  • FIG. 3 is a side elevation of the liftchair illustrated in FIG. 2 shown in it's immobile condition with the seat in it's lowest position in firm contact with the ground,and the frame and wheels raised slightly off the ground.
  • FIG. 4 is a front elevation of the liftchair shown in FIG. 1 in it's mobile condition with the seat in it's upper position, with the seat out of contact with the ground and the wheels in contact with the ground.
  • FIG. 5 is a side elevation of the liftchair shown in FIG. 4 with the seat in it's upper position, out of contact with the ground and the wheels in contact with the ground.
  • FIG. 6 is a side elevation of the liftchair shown in FIG. 5 with the seat in it's lowest position, resting in full contact on the ground.
  • FIG. 7 is a side elevation of the embodiment shown in FIG. 2 of the present invention in which the frame is made of tubing and supplied with handles and a battery for operating the seat.
  • FIG. 8 and FIG. 9 show drawings from the original “Armchair with Seatlift” U.S. Pat. No. 5,816,655 showing the seat drive mechanism used in the present Patent Application.
  • FIG. 1 a perspective view of a liftchair of the type patented in U.S. Pat. No. 5,816,655 is shown at 100 , supplied with one embodiment of the present improvement Patent Application, comprising 2 fixed wheels 110 , located one at each rear lower comer 114 , and 2 swivel wheels 110 a at each front lower comer 114 a at lower front connecting bar 111 of frame 112 , and with seat 113 in it's lower position resting on ground 115 .
  • FIG. 2 and FIG. 3 a similar liftchair of above type is shown at 130 , with a second embodiment of the present invention, the wheels in this embodiment comprising a pair of large wheelchair type wheels 131 rotatably mounted on each side 112 a and 112 b of frame 112 with a hand rail 132 mounted on each large wheelchair wheel, and a pair of smaller swivel wheels 133 mounted on brackets 154 , one large wheel 131 and one smaller swivel wheel 133 being located on left side 112 a and on right side 112 b of liftchair 130 .
  • Conventional brakes 113 may be attached on either side 112 a and 112 b of liftchair 130 to control the mobility of liftchair 130
  • handles 136 may be attached at top rear 136 a of frame 112 .
  • FIG. 3 the liftchair illustrated in FIG. 2 is shown with seat 113 moved down below underside 138 of frame 112 , of liftchair 130 to a position 138 a , resting on ground 115 , where it has lifted wheels 131 and 133 slightly above ground 115 , making liftchair 130 particularly immobile and firmly stable resting on ground 115 , since combined weights of liftchair 130 and weights of wheels 131 and 133 and handrails 132 are bearing down on seat 113 that is resting on ground 115 .
  • liftchair 100 illustrated in FIG. 1 is shown with seat 113 in it's upper position 113 a with 2 front swivel wheels 110 a and 2 rear fixed wheels 110 (not visible) resting on ground 115 , enabling liftchair 100 to become mobile when desired.
  • FIG. 5 a side elevation of the liftchair illustrated in FIG. 4 is shown with seat 113 in it's upper position 113 a , with one pair of front wheels being swivel wheels and one pair of wheels 110 at rear of liftchair 100 being fixed wheels.
  • liftchair 100 illustrated in FIG. 5 is shown with seat 113 in it's lowest position 113 b , with seat 113 resting on ground 115 , making liftchair 100 immobile, facillitating transfer of a person from ground 115 onto seat 113 without seat 113 moving away from the transferring person during this transfer operation.
  • FIG. 7 a liftchair 140 of the type illustrated in FIG. 2 and FIG. 3 is shown at 140 , in this embodiment having a frame 141 of tubular construction made of wheelchair type tubing, substantially in the form of a conventional wheelchair, liftchair 140 having 2 sides 142 and 143 and a back 144 .
  • a crossmember 145 is located at bottom front 146 frame 141 , connecting sides 142 and 143 together.
  • cross members 147 , 147 a and 147 b are located at back 144 of frame 141 connecting sides 142 and 143 together at the back.
  • Identical side members 150 on either side 142 and 143 connect vertical front frame members 151 and vertical rear frame members 152 together and rotatably carry large wheelchair wheels 131 at 131 a on either side 142 and 143 of frame 141 .
  • Brackets 154 at back 149 of frame 141 carry swivel wheels 155 and may carry a battery 162 to drive mechanism to lift seat 113 up and down as shown in U.S. Pat. No. 5,816,655 (not shown here).
  • This seatlift mechanism drives seat 113 subtantially vertically up and down on rollers 160 , rolling on vertical rails 161 located at each side 142 and 143 of frame 141 .

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Handcart (AREA)

Abstract

An improvement in an ARMCHAIR WITH SEATLIFT, as patented in U.S. Pat. No. 5,816,655 designed for a disabled person, or a person with weak legs, the armchair having a seat able to move vertically up and down in the frame of the armchair from a normal seating position to a position flat on the ground, the improvement being: making the armchair automatically mobile and automatically immobile when desired, by attaching wheels to the armchair in such a manner that the armchair automatically becomes mobile by making the wheels automatically become in contact with the ground when the seat moves to it's upper position, and automatically making the seat become in full frictional contact with the ground when the seat is in it's lower position, thereby facillitating the transfer of a person, fallen on the ground, safely onto the seat, without the seat tending to move away from the person during the transfer.

Description

    FIELD OF INVENTION
  • The present invention relates to aids for persons who fall on the floor and are too weak to get up again on their own. [0001]
    • BACKGROUND OF THE INVENTION
  • The background is applicants U.S. Pat. No. 5,816,655 on ARMCHAIR WITH SEATLIFT issued Oct. 6, 1998, in the following called a Liftchair, which has a seat that can move substantially vertically up and down in a frame. The current invention describes and relates to an improvement on this prior invention and more particularly refers to a method of providing wheels to the liftchair in such a manner, that the liftchair automatically becomes mobile upon the seat being moved upward, such as, for instance, when it is desired to move the liftchair from one place to another, yet provides that the liftchair automatically becomes solidly stationary on the ground just prior to the lifting operation, during the time a person may be transferring from the ground onto the seat and until the person is firmly located on the seat, ready to be lifted up to a normal seated position in the liftchair. Upon the seat thereafter being activated to move upwards, the liftchair is automatically rendered mobile again, by contact between the seat and the ground being automatically eliminated. [0002]
    • SUMMARY OF THE INVENTION
  • It is an object of this invention to provide a liftchair, as above, with a mechanism that automatically allows the liftchair to become immobile while a person transfers onto the seat, yet automatically allows the liftchair to become mobile as the seat moves up to it's upper sitting position. [0003]
  • The liftchair is supplied with wheels, that may be small wheels located, for instance, one wheel in each lower corner of the liftchair frame. Some of the wheels may be swivel wheels, located in such a manner that allows the seat to go down between the wheels to the ground and if desired, slightly down beyond the wheels, so that the seat will lift the wheels slightly off the ground, automatically leaving the seat and the whole liftchair frictionally anchored to the ground due to the weight of the liftchair, ready for the safe transfer of a person from the ground onto the seat. [0004]
  • It is another object of this invention to provide a mechanism that allows an immobilized liftchair as above, to automatically become mobile when needed, by rotatably attaching wheelchair type wheels to each side of the liftchair. The wheelchair wheels extend down a little beyond the bottom of the liftchair frame allowing the wheels to contact and rest on the floor while the seat is in it's upper position, whereby the liftchair becomes mobile. Upon the seat being actuated to go vertically down to the ground, the seat is adapted to go down between the wheelchair wheels to the ground and slightly down beyond the wheels, so that the seat will lift the wheelchair wheels slightly off the ground in it's down position, leaving the seat and the liftchair automatically anchored to the ground by the full combined weight of the liftchair and wheels , while a person is transferring onto the seat, thereby automatically keeping the liftchair immobile to it's fullest extent during this transfer operation, allowing a person safely to transfer from the ground onto the seat of the liftchair without the liftchair moving away from the person during this operation. [0005]
  • It is another object of this invention to provide a liftchair that allows an immobilized liftchair as above to automatically become fully mobile again as soon as the seat and the person thereon have started on the way up to the upper position. [0006]
  • It is a further object of this invention to provide a liftchair as above in which the wheelchair wheels are supplied with brakes to control the mobility of the liftchair, and the liftchair is supplied with handles, so that a nurse or the like may move the liftchair around. [0007]
  • It is a further object of this invention to provide a liftchair, as above, that, with the seat in the mobile upper position allows the liftchair to be moved by the person in the liftchair, by the person turning the wheels by hand, or by the person turning handrails attached to the wheels. [0008]
  • It is another object of this invention to eliminate the backbreaking need for a nurse to lift a heavy person from the ground up to a seat on a chair or on a wheelchair.[0009]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • In the drawings: [0010]
  • FIG. 1 is a perspective view of an armchair with a seatlift, as shown in applicants issued U.S. Pat. No. 5,816,655 in the following called a “liftchair”, with one preferred embodiment of the improvement of the present invention located thereon, comprising wheels attached to the base of the frame of the liftchair, shown with the liftchair in it's immobile condition with the seat in it's lowest position, resting on the ground. [0011]
  • FIG. 2 is a side elevation of a liftchair with another embodiment of the improvement of the present invention located thereon, comprising wheelchair type wheels rotatably attached to the sides of the frame of the liftchair and one or two swivel wheels attached to the rear of the liftchair, shown in it's mobile condition with it's seat in it's upper position, out of contact with the ground and the wheels in contact with the ground. A handbrake is located on the frame to control mobility. [0012]
  • FIG. 3 is a side elevation of the liftchair illustrated in FIG. 2 shown in it's immobile condition with the seat in it's lowest position in firm contact with the ground,and the frame and wheels raised slightly off the ground. [0013]
  • FIG. 4 is a front elevation of the liftchair shown in FIG. 1 in it's mobile condition with the seat in it's upper position, with the seat out of contact with the ground and the wheels in contact with the ground. [0014]
  • FIG. 5 is a side elevation of the liftchair shown in FIG. 4 with the seat in it's upper position, out of contact with the ground and the wheels in contact with the ground. [0015]
  • FIG. 6 is a side elevation of the liftchair shown in FIG. 5 with the seat in it's lowest position, resting in full contact on the ground. [0016]
  • FIG. 7 is a side elevation of the embodiment shown in FIG. 2 of the present invention in which the frame is made of tubing and supplied with handles and a battery for operating the seat. [0017]
  • FIG. 8 and FIG. 9 show drawings from the original “Armchair with Seatlift” U.S. Pat. No. 5,816,655 showing the seat drive mechanism used in the present Patent Application.[0018]
    • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIG. 1, a perspective view of a liftchair of the type patented in U.S. Pat. No. 5,816,655 is shown at [0019] 100, supplied with one embodiment of the present improvement Patent Application, comprising 2 fixed wheels 110, located one at each rear lower comer 114, and 2 swivel wheels 110 a at each front lower comer 114 a at lower front connecting bar 111 of frame 112, and with seat 113 in it's lower position resting on ground 115.
  • In FIG. 2 and FIG. 3 a similar liftchair of above type is shown at [0020] 130, with a second embodiment of the present invention, the wheels in this embodiment comprising a pair of large wheelchair type wheels 131 rotatably mounted on each side 112 a and 112 b of frame 112 with a hand rail 132 mounted on each large wheelchair wheel, and a pair of smaller swivel wheels 133 mounted on brackets 154, one large wheel 131 and one smaller swivel wheel 133 being located on left side 112 a and on right side 112 b of liftchair 130. Conventional brakes 113 may be attached on either side 112 a and 112 b of liftchair 130 to control the mobility of liftchair 130, and handles 136 may be attached at top rear 136 a of frame 112.
  • In FIG. 3 the liftchair illustrated in FIG. 2 is shown with [0021] seat 113 moved down below underside 138 of frame 112, of liftchair 130 to a position 138 a, resting on ground 115, where it has lifted wheels 131 and 133 slightly above ground 115, making liftchair 130 particularly immobile and firmly stable resting on ground 115, since combined weights of liftchair 130 and weights of wheels 131 and 133 and handrails 132 are bearing down on seat 113 that is resting on ground 115.
  • In FIG. 4 [0022] liftchair 100 illustrated in FIG. 1 is shown with seat 113 in it's upper position 113 a with 2 front swivel wheels 110 a and 2 rear fixed wheels 110 (not visible) resting on ground 115, enabling liftchair 100 to become mobile when desired.
  • In FIG. 5 a side elevation of the liftchair illustrated in FIG. 4 is shown with [0023] seat 113 in it's upper position 113 a, with one pair of front wheels being swivel wheels and one pair of wheels 110 at rear of liftchair 100 being fixed wheels.
  • In FIG. 6, [0024] liftchair 100 illustrated in FIG. 5 is shown with seat 113 in it's lowest position 113 b, with seat 113 resting on ground 115, making liftchair 100 immobile, facillitating transfer of a person from ground 115 onto seat 113 without seat 113 moving away from the transferring person during this transfer operation.
  • In FIG. 7 a [0025] liftchair 140 of the type illustrated in FIG. 2 and FIG. 3 is shown at 140, in this embodiment having a frame 141 of tubular construction made of wheelchair type tubing, substantially in the form of a conventional wheelchair, liftchair 140 having 2 sides 142 and 143 and a back 144. A crossmember 145 is located at bottom front 146 frame 141, connecting sides 142 and 143 together. Similarly cross members 147, 147 a and 147 b are located at back 144 of frame 141 connecting sides 142 and 143 together at the back. Identical side members 150 on either side 142 and 143 connect vertical front frame members 151 and vertical rear frame members 152 together and rotatably carry large wheelchair wheels 131 at 131 a on either side 142 and 143 of frame 141. Brackets 154 at back 149 of frame 141 carry swivel wheels 155 and may carry a battery 162 to drive mechanism to lift seat 113 up and down as shown in U.S. Pat. No. 5,816,655 (not shown here). This seatlift mechanism drives seat 113 subtantially vertically up and down on rollers 160, rolling on vertical rails 161 located at each side 142 and 143 of frame 141.
    • LIFTCHAIR NUMBERING
  • [0026] 10 Liftchair
  • [0027] 11 Frame
  • [0028] 12 Frame left side
  • [0029] 13 Frame right side
  • [0030] 14 Upper rear cross member
  • [0031] 15 Lower rear cross member
  • [0032] 16 Front base cross member
  • [0033] 17 Left vertical rail
  • [0034] 18 Right vertical rail
  • [0035] 19 Seat
  • [0036] 19 a Front open space
  • [0037] 20 Left side plate
  • [0038] 21 Right side of backplate
  • [0039] 22 Back plate
  • [0040] 24 Drive motor
  • [0041] 25 Flanged pulleys
  • [0042] 26 Outer side of plate 21
  • [0043] 27 Forward side of rail18
  • [0044] 28 Rearward side of rail 18
  • [0045] 29 Drive shaft
  • [0046] 30 Lower rear location
  • [0047] 32 Motor sprocket
  • [0048] 33 Motor drive chain
  • [0049] 34 Shaft drive sprocket
  • [0050] 35 Lift chain sprocket
  • [0051] 36 Lift chain
  • [0052] 37 Chain attachment at upper end of plate 21
  • [0053] 38 Upper flanged pulley
  • [0054] 39 Upper end of rail 18
  • [0055] 40 Lower flanged pulley
  • [0056] 41 Secondary flanged pulley
  • [0057] 42 Chain lower attachment on side plate 21
  • [0058] 43 Control box
  • [0059] 45 UP-DOWN switch
  • [0060] 46 Activate switch
  • [0061] 47 Flexible sheet
  • [0062] 48 Upper end of sheet
  • [0063] 49 Front edge of seat
  • [0064] 50 Round rod
  • [0065] 51 Space at rod
  • [0066] 52 Lower end of sheet
  • [0067] 100 1st. Embodiment
  • [0068] 110 Swivel wheel
  • [0069] 110 a Fixed wheel
  • [0070] 111 Lower front crossbar
  • [0071] 112 Frame
  • [0072] 112 a Left side of frame
  • [0073] 112 b Right side of frame
  • [0074] 113 Seat
  • [0075] 113 a Seat in upper position
  • [0076] 113 b Seat in lower position
  • [0077] 114 Rear lower comer of frame
  • [0078] 114 a Front lower comer of frame
  • [0079] 115 Ground
  • [0080] 130 Liftchair Second embodiment
  • [0081] 131 Large wheelchair wheel
  • [0082] 131 a Large wheelchair point of attachment
  • [0083] 132 Hand rail
  • [0084] 133 Small wheelchair swivel wheel
  • [0085] 136 Handle
  • [0086] 136 a Top rear of frame
  • [0087] 137 Brake
  • [0088] 138 Underside of frame
  • [0089] 138 a Lowered position of seat
  • [0090] 140 Tubularly constructed frame embodiment
  • [0091] 142 Left side of tubular constructed frame
  • [0092] 143 Right side of tubularly constructed frame
  • [0093] 144 Back of tubularly constructed frame
  • [0094] 145 Lower front cross member
  • [0095] 146 Bottom front of tubularly constructed frame
  • [0096] 147 Lower back cross member
  • [0097] 147 a Middle back cross member
  • [0098] 147 b Upper back cross member
  • [0099] 150 Side horizontal cross member
  • [0100] 151 Front vertical frame member
  • [0101] 152 Rear vertical frame member
  • [0102] 154 Swivel wheel bracket
  • [0103] 155 Tubular frame swivel wheel
  • [0104] 160 Vertical rail
  • [0105] 161 Roller
  • [0106] 162 Battery

Claims (5)

I claim:
1. An improvement in an Armchair With Seatlift , as described in issued U.S. Pat. No. 5,816,655, in which said Armchair With Seatlift in the following called “liftchair”, has a seat means that has an “upper” position and a “lower” position, and a frame, said liftchair being made automatically mobile and respectively automatically immobile and stable on the ground said liftchair is standing on, by adding wheel means to said liftchair, said wheel means extending slightly below bottom of said, frame, said seat means being able to move in such a manner as to automatically lock said liftchair to said ground upon said seat means being in said “lower” position said seat means being activated by electrically driven means described in above mentioned US Patent, said seat means being able to go down between said wheel means to rest fully on said ground in said lower position, said seat means being able to carry the weights of said liftchair and said wheel means and transfer said weights to said ground in said “lower” position, automatically rendering said liftchair frictionally immobile, thereby to permit a fallen person on said ground to transfer safely from said ground onto said seat means, said liftchair automatically becoming fully mobile upon said seat means being moved upward toward said upper position, releasing said seat means and said weights from contact with said ground, allowing said wheel means to be free to move over said ground.
2. An improvement in a liftchair as claimed in claim 1, in which said wheel means comprise a combination of fixed wheel means and swivel wheel means located at said bottom of said liftchair, said seat means being able to go down between said combination of wheel means to said ground, said seat means being able to lift said combination of wheel means slightly above said ground, friction between said seat and said ground thereby rendering said liftchair immobile to facillitate safe transfer of a fallen person from said ground to said seat means, said liftchair automatically becoming mobile upon said seat means being moved upward, automatically releasing said friction between said seat means and said ground and at the same time allowing said combination of wheels means to go down in contact with said ground.
3. An improvement in a liftchair as claimed in claim 1, in which said liftchair has a frame with two sides and in which said wheel means comprise wheel chair type wheel means, rotatably attached to each of said two sides of said frame, making said liftchair mobile, said seat means being able, when desired, to go vertically down between said wheelchair wheel means to said ground and be in full contact with said ground, said seat being able to lift said wheelchair wheel means slightly off said ground to automatically render said liftchair fully immobile, said liftchair automatically becoming mobile again upon said seat means being moved upward out of contact with said ground.
4. An improvement in a liftchair as claimed in claim 3, in which said frame is of tubular construction made substantially of wheelchair type tubing, substantially in the form of a conventional wheelchair, including brake means to control mobility of said liftchair.
5. An improvement in a liftchair as claimed in claim 4, in which battery means are carried on said frame to drive said liftchair mechanism and to facillitate mobility of said liftchair.
US09/745,827 2000-12-21 2000-12-21 Armchair with seatlift Abandoned US20020079727A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200113757A1 (en) * 2018-10-10 2020-04-16 Muhammad Abdullah Wheelchair Lift Apparatus
US12011401B1 (en) * 2023-11-09 2024-06-18 BBD Lift LLC Wheelchair lift apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200113757A1 (en) * 2018-10-10 2020-04-16 Muhammad Abdullah Wheelchair Lift Apparatus
US10918544B2 (en) * 2018-10-10 2021-02-16 Muhammad Abdullah Wheelchair lift apparatus
US12011401B1 (en) * 2023-11-09 2024-06-18 BBD Lift LLC Wheelchair lift apparatus

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