US4296506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid chair
Assignee: Individual
•
Filing: 1980-02-29
•
Granted: 1981-10-27
•
Expires: 2000-02-29
Abstract
Abstract A seat for a collapsible invalid wheelchair comprising: a flexible padded seat; an elongated, generally rectangular opening in the seat; reinforcing means located within the seat and at the underside of the seat respectively on either side of the said opening; flanges on the underside of the seat; a removable waste-receiving receptacle sliding in said flanges and extending over the full length of said opening; and a detachable flexible padded flap adapted to close said opening after the receptacle has been removed; the arrangement being such that the removal and closing of the flap, and the insertion and removal of the receptacle can all be accomplished by the chair occupant without leaving the chair.
Inventors
- 👤 Neville Stoute, Sr.
- 👤 Robert J. Pennise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:54
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1002
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
264 words
A replacement seat for a collapsible invalid wheelchair which comprises a left side frame member, a right side frame member and means effective between the frame members to hold them apart, said seat comprising: a flexible padded seat member having a left side edge and right side edge for attachment to the left side frame member and the right side frame member respectively of an existing collapsible wheelchair, said seat member being formed with an elongated, generally rectangular opening extending substantially parallel to the left and right side edges of the seat member, reinforcing means located within the seat member and at the underside of the seat member respectively on each side of said opening; means defining tracks on the underside of the seat member and extending substantially parallel to the left and right side edges of the seat member on each side of the opening; a removable receptable adapted to fit slidingly in said tracks and extend over the full length of said opening; and a detachable flexible padded flap removably attached to the seat member at the underside thereof for closing said opening after the receptacle has been removed, the arrangement being such that the removal and attachment of the flap, and the insertion and removal of the receptacle can all be accomplished from the underside of the seat member, and such that upon removal of the receptacle the seat member can be folded about a line extending substantially parallel to the left and right side edges of the seat member without interference from the reinforcing means or the track defining means.
Claim 2
Dependent Claim
264 words
A replacement seat for a collapsible invalid wheelchair which comprises a left side frame member, a right side frame member and means effective between the frame members to hold them apart, said seat comprising: a flexible padded seat member having a left side edge and right side edge for attachment to the left side frame member and the right side frame member respectively of an existing collapsible wheelchair, said seat member being formed with an elongated, generally rectangular opening extending substantially parallel to the left and right side edges of the seat member, reinforcing means located within the seat member and at the underside of the seat member respectively on each side of said opening; means defining tracks on the underside of the seat member and extending substantially parallel to the left and right side edges of the seat member on each side of the opening; a removable receptable adapted to fit slidingly in said tracks and extend over the full length of said opening; and a detachable flexible padded flap removably attached to the seat member at the underside thereof for closing said opening after the receptacle has been removed, the arrangement being such that the removal and attachment of the flap, and the insertion and removal of the receptacle can all be accomplished from the underside of the seat member, and such that upon removal of the receptacle the seat member can be folded about a line extending substantially parallel to the left and right side edges of the seat member without interference from the reinforcing means or the track defining means.
Claim 3
Dependent Claim
54 words
The seat for an invalid wheelchair as claimed in claim 1, wherein the reinforcing means are in the form of bars and tubes and the bars are located between canvas layers and the tubes are located in open pockets running along the sides of the elongated opening at the bottom of the seat member.
Claim 4
Dependent Claim
55 words
The seat for an invalid wheelchair as claimed in claim 1, wherein the flexible flap is detachably secured to the seat member from underneath by means of press studs and the flap has a raised central padded area of double thickness which fits into and completely fills the elongated rectangular opening in the seat member.
Claim 5
Dependent Claim
27 words
The seat for an invalid wheelchair as claimed in claim 1, wherein the removable receptacle is generally boat-shaped and has side flanges for fitting in said tracks.
Claim 6
Dependent Claim
29 words
The seat for an invalid wheelchair as claimed in claim 1, wherein said means defining tracks comprise L-shaped runners bolted or press-snapped against the underside of the seat member.
Claim 7
Dependent Claim
24 words
The seat for an invalid wheelchair as claimed in claim 1, wherein the receptacle is v-shaped and is lined with a disposable plastic pouch.
Claim 8
Dependent Claim
35 words
The seat for an invalid wheelchair as claimed in claim 6, wherein the receptacle has a concave edge at the top of the front and rear edge to allow for curvature of the seat member.
Claim 9
Dependent Claim
266 words
A collapsible invalid wheelchair comprising: a left side frame member; a right side frame member; collapsible means effective between the right side frame member and the left side frame member and having an uncollapsed condition in which said frame members are held apart and a collapsed condition in which said members can be moved together, and a flexible padded seat having a left side edge and a right side edge attached to the left side frame member and the right side frame member respectively; said seat being formed with an elongated, generally rectangular opening extending in the direction from front to rear of the seat, and said seat including reinforcing means located within the seat and at the underside of the seat respectively on each side of said opening, means defining tracks on the underside of the seat and extending from the front to the rear of the seat on each side of the opening, a removable receptacle adapted to fit slidingly in said tracks and extend over the full length of said opening; and a detachable flexible padded flap removably attached to the seat at the underside thereof for closing said opening after the receptacle has been removed, the arrangement being such that the removal and attachment of the flap, and the insertion and removal of the receptacle can all be accomplished by the chair occupant without leaving the chair, and such that, upon removal of the receptacle, the chair and seat can be folded without interference from the reinforcing means or the track defining means and without detaching the seat from the frame members.
Claim 10
Dependent Claim
266 words
A collapsible invalid wheelchair comprising: a left side frame member; a right side frame member; collapsible means effective between the right side frame member and the left side frame member and having an uncollapsed condition in which said frame members are held apart and a collapsed condition in which said members can be moved together, and a flexible padded seat having a left side edge and a right side edge attached to the left side frame member and the right side frame member respectively; said seat being formed with an elongated, generally rectangular opening extending in the direction from front to rear of the seat, and said seat including reinforcing means located within the seat and at the underside of the seat respectively on each side of said opening, means defining tracks on the underside of the seat and extending from the front to the rear of the seat on each side of the opening, a removable receptacle adapted to fit slidingly in said tracks and extend over the full length of said opening; and a detachable flexible padded flap removably attached to the seat at the underside thereof for closing said opening after the receptacle has been removed, the arrangement being such that the removal and attachment of the flap, and the insertion and removal of the receptacle can all be accomplished by the chair occupant without leaving the chair, and such that, upon removal of the receptacle, the chair and seat can be folded without interference from the reinforcing means or the track defining means and without detaching the seat from the frame members.
Claim 11
Dependent Claim
50 words
The invalid wheelchair as claimed in claim 8, wherein the reinforcing means are in the form of bars and tubes and the bars are located between canvas layers and the tubes are located in open pockets running along the sides of the elongated opening at the bottom of the seat.
Claim 12
Dependent Claim
50 words
The invalid wheelchair as claimed in claim 8, wherein the flexible flap is detachably secured to the seat from underneath by means of press studs and the flap has a raised central padded area of double thickness which fits into and completely fills the elongated rectangular opening in the seat.
Claim 13
Dependent Claim
24 words
The invalid wheelchair as claimed in claim 8, wherein the removable receptacle is generally boat-shaped and has side flanges for fitting in said tracks.
Claim 14
Dependent Claim
25 words
The invalid wheelchair as claimed in claim 8, wherein said means defining tracks comprise L-shaped runners bolted or press-snapped against the underside of the seat.
Claim 15
Dependent Claim
21 words
The invalid wheelchair as claimed in claim 8, wherein the receptacle is V-shaoed and is lined with a disposable plastic pouch.
Claim 16
Dependent Claim
31 words
The invalid wheelchair as claimed in claim 13, wherein the receptacle has a concave edge at the top of the front and rear edge to allow for curvature of the seat.
References Cited (Backward Citations)
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Cited
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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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |