Patent US3622741A successfully refreshed from Google Patents.
US3632162A
Expired / Lapsed
US
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Chair for the handicapped
Assignee: Individual
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Filing: 1970-03-12
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Granted: 1972-01-04
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Expires: 1990-03-12
Abstract
Abstract A unitary structure is molded from resinous impregnated fabric material to provide a back, seat and front leg portions with side flanges which together form a channel for containing parts of the body of a handicapped user. The unitary structure is supported on a stable base by the front leg portions which preferably provide a hingedlike effect due to the flexibility of the impregnated fabric material. The base may be a wheeled dolly with suitable braking means. Further support is provided by an adjustable length rear leg, extending between the base and the rear of the seat portion. The channel-shaped unitary structure preferably had additional oppositely directed reinforcement channels sharing in common the side flanges along each side. In addition to other reinforcement there are preferably provided a detachable headrest and adjustable and detachable tray and footrest members.
Inventors
- 👤 Edward J Trethaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:51
CPC Classifications
A; A47; A47C; A47C5/00; A47C5/12; A47C7/00; A47C7/36; A47C7/38; A47C7/50; A47C7/506; A61; A61G; A61G5/00; A61G5/10; A61G5/1094; A61G5/12; A61G5/121; A61G5/128; B; B60; B60B; B60B33/00; B60B33/02; B60B33/021; A61G5/1005; A61G5/101; A61G5/1013; A61G5/1018; A61G5/1037; A61G5/1056; A61G5/1075; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
249 words
A chair for the handicapped comprising a stable support base, a unitary structure mounted on said support base having back, seat and front leg portions molded from a web of resinous impregnated fiber material wherein rigidity is increased by continuing the molded web in essentially parallel continuous side flanges at the opposite sides of the seat, back and front leg portions, whereby the unitary structure provides a channel for containing seated body portions of the user, the front leg portion being attached to the base and having a hinge region adjacent to the place of attachment to the base providing a hinge effect due to the inherent flexibility of the impregnated fiber material, in order to afford limited tilting or inclination of the chair, a single rear leg beneath the seat and spaced back from the front leg portion, including telescoping pieces, one affixed beneath the seat and one affixed to the base, movement of which relative to one another changes the effective length of the rear leg to effect rotation of the unitary structure about the hinge region and latching means for securing in selected positions the telescoping pieces against movement relative to one another, a removable footrest adjustably positionable within the side flanges of the molded channel in the front leg portion of the unitary structure and being supported in selected positions by said side flanges, and associated tray and headrest attachments removably supported on said unitary structure, at least one oF which is adjustable in position.
Claim 2
Dependent Claim
249 words
A chair for the handicapped comprising a stable support base, a unitary structure mounted on said support base having back, seat and front leg portions molded from a web of resinous impregnated fiber material wherein rigidity is increased by continuing the molded web in essentially parallel continuous side flanges at the opposite sides of the seat, back and front leg portions, whereby the unitary structure provides a channel for containing seated body portions of the user, the front leg portion being attached to the base and having a hinge region adjacent to the place of attachment to the base providing a hinge effect due to the inherent flexibility of the impregnated fiber material, in order to afford limited tilting or inclination of the chair, a single rear leg beneath the seat and spaced back from the front leg portion, including telescoping pieces, one affixed beneath the seat and one affixed to the base, movement of which relative to one another changes the effective length of the rear leg to effect rotation of the unitary structure about the hinge region and latching means for securing in selected positions the telescoping pieces against movement relative to one another, a removable footrest adjustably positionable within the side flanges of the molded channel in the front leg portion of the unitary structure and being supported in selected positions by said side flanges, and associated tray and headrest attachments removably supported on said unitary structure, at least one oF which is adjustable in position.
Claim 3
Dependent Claim
35 words
The chair of claim 1 in which the unitary structure includes a flange portion at the bottom of the front leg portion extending generally perpendicular to the side flanges and joining together the side flanges.
Claim 4
Dependent Claim
38 words
The chair of claim 2 in which the side flanges themselves are, in turn, provided with a further flange web increasing strength of the chair and providing arms on the chair at an appropriate level above the seat.
Claim 5
Dependent Claim
87 words
The chair of claim 3 in which the side flange structure is completed by further flanges directed away from the direction of opening of the chair so that each side flange structure all together provides a channel of opposite-facing direction from the channel provided by the chair itself and so that there is a channel extending along the length of each side of the chair to provide greater rigidity and whose edges are rounded to prevent the user from being injured on an edge of the web.
Claim 6
Dependent Claim
31 words
The chair of claim 4 in which the tray attachment is provided on the outer surface of the outermost flange at each side of the chair below the flanges supplying arms.
Claim 7
Dependent Claim
53 words
The chair of claim 5 in which the tray attachment is a metallic channel provided to entrap slide elements permitting adjustment of the tray toward and away from the back of the chair, the channel slide element being located beneath the arms of the chair and out of the way of the user.
Claim 8
Dependent Claim
50 words
The chair of claim 4 in which a flange is provided at the top of the back, extending away from the back in the direction away from the front leg portions, said flange also closing the ends of the flanged channel structures extending along each side of the unitary structure.
Claim 9
Dependent Claim
68 words
The chair of claim 7 in which the removable headrest effectively extends the back upwardly and is removably attached to the flange atop the back of the unitary structure, a convoluted portion conforming to and interfitting with the flange across the top of the back of the unitary structure so that attachment is made by a single removable attachment means extending through the convoluted portion and said flange.
Claim 10
Dependent Claim
30 words
The chair of claim 8 in which the headrest is provided with a series of spaced openings in order to accommodate straps and ties for pillow and head holding apparatus.
Claim 11
Dependent Claim
46 words
The footrest of claim 1 in which the footrest is provided with means alternatively engageable with a number of portions in the front leg web portion of the channel and retractable means engageable at different levels into alternative pairs of opposed openings in the opposed flanges.
Claim 12
Dependent Claim
61 words
The chair of claim 10 in which rows of holes are provided in the front leg web portion and each of the respective flanges at such levels to accommodate pins in the footrest such that the footrest may be either horizontal or tilted at angles which are multiples of 8* by rotating the footrest around the pins engaged by the flanges.
Claim 13
Dependent Claim
61 words
The chair of claim 5 in which the tray extends above and beyond the arms of the chair and is provided with downwardly extending support flanges through each of which extend at least two manual locking means attachable to slides in channel slide guides, each of said locking means being adjustable to lock and loosen structure in position in the guides.
Claim 14
Dependent Claim
64 words
The chair of claim 12 in which the support flanges for the tray are provided with slots transverse to the slide guide and permitting adjustment of the tray upwardly and downwardly, away from and toward the seat of the chair, and at least one of the manual locking means acts to lock the tray in vertical position by clamping the flange against the guide.
Claim 15
Dependent Claim
32 words
The chair of claim 1 in which the base is provided with wheels permitting it to be conveniently moved about and suitable brake means to hold the chair in a selected place.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |