US3965508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seating cushion
Assignee: Individual
•
Filing: 1975-04-14
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Granted: 1976-06-29
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Expires: 1995-04-14
Abstract
Abstract A fluid filled cushion for wheel chairs or the like. In a preferred embodiment, the cushion is partially filled with water but it may also be filled with air or the like. The cushion has a tongue portion protruding from the front thereof. The tongue depends over the front edge of the seat of the chair and assumes horizontal position when the user of the chair is seated on the cushion, to separate the legs of the user. The invention is intended for use by paraplegics who normally do not have sufficient muscular control to keep their legs separated.
Inventors
- 👤 Ronald Bruce Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:12
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1043; A47; A47C; A47C27/00; A47C27/08; A47C27/085; A61G5/1045; A61G5/1091
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A cushion for use as a seating cushion for invalids on wheel chairs or the like, made from a flexible, fluid impervious sheet material, comprising: an airtight hollow seat portion; a hollow tongue portion in conduit communication with the said hollow seat portion and extending therefrom beyond the proposed seating area into the space intended for the invalid's legs and a closeable orifice in communication with the said hollow tongue and seat portions, whereby when the said cushion with said hollows filled with a fluid at ambient pressure is laid upon the seat of a chair leaving said tongue portion to depend downwardly in a seat unoccupied state, a person's weight subsequently occupying said cushion expresses an amount of fluid into said tongue portion to lift it into a horizontal position to assist in separation of the legs of the invalid.
Claim 2
Dependent Claim
141 words
A cushion for use as a seating cushion for invalids on wheel chairs or the like, made from a flexible, fluid impervious sheet material, comprising: an airtight hollow seat portion; a hollow tongue portion in conduit communication with the said hollow seat portion and extending therefrom beyond the proposed seating area into the space intended for the invalid's legs and a closeable orifice in communication with the said hollow tongue and seat portions, whereby when the said cushion with said hollows filled with a fluid at ambient pressure is laid upon the seat of a chair leaving said tongue portion to depend downwardly in a seat unoccupied state, a person's weight subsequently occupying said cushion expresses an amount of fluid into said tongue portion to lift it into a horizontal position to assist in separation of the legs of the invalid.
Claim 3
Dependent Claim
43 words
A cushion as claimed in claim 1, wherein said bag has a substantially rectangular shape and is adapted to correspond in shape to that of a seat of said wheel chair, with said tongue portion extending beyond the front edge of said seat.
Claim 4
Dependent Claim
23 words
A cushion as claimed in claim 2, wherein said tongue portion forms a unit communicating with the inside of said substantially rectangular bag.
Claim 5
Dependent Claim
77 words
A cushion as claimed in claim 3, wherein said bag is adapted to be filled with water at ambient pressure and secured to the seat of a wheel chair, whereby said tongue portion depends downwardly from the front edge area of said seat with the cushion unloaded with a person's weight, said tongue being adapted to assume a substantially horizontal position when said person is seated on the cushion, to assist in separation of the person's legs.
Claim 6
Dependent Claim
133 words
A cushion for use in a wheel chair for invalids, comprising: a. a top wall made of flexible, liquid impervious sheet material; b. a bottom wall made of flexible, liquid impervious sheet material; c. said top and bottom walls being joined along peripheral edges thereof to form a flat, liquid impervious container; d. valve means in one of said walls for filling said container with a liquid and for maintaining the filled container closed; e. said top wall and said bottom wall being of a substantially rectangular shape and having a tongue portion projecting from the center of one side of said substantially rectangular shape; f. the interior of the tongue portion forming a part of the interior of the cushion and communicating with the interior of the remaining part of said container.
Claim 7
Dependent Claim
133 words
A cushion for use in a wheel chair for invalids, comprising: a. a top wall made of flexible, liquid impervious sheet material; b. a bottom wall made of flexible, liquid impervious sheet material; c. said top and bottom walls being joined along peripheral edges thereof to form a flat, liquid impervious container; d. valve means in one of said walls for filling said container with a liquid and for maintaining the filled container closed; e. said top wall and said bottom wall being of a substantially rectangular shape and having a tongue portion projecting from the center of one side of said substantially rectangular shape; f. the interior of the tongue portion forming a part of the interior of the cushion and communicating with the interior of the remaining part of said container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |