US4682818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure distribution pad assembly for wheelchairs
Assignee: Individual
•
Filing: 1986-08-14
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Granted: 1987-07-28
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Expires: 2006-08-14
Abstract
Abstract A modifiable pressure distribution pad assembly for a wheelchair comprises a bottom pad of resilient foam material of high density and at least one upper pad of resilient foam material of intermediate density having at least one cutout defining an opening therethrough. Filler foam material of low density is frictionally mounted as an insert in at least one of the openings of the one of upper pads and removable therefrom. A cover encloses the pads, the cover permitting removal of the upper pads and associated filler material therefrom so that filler foam material in one opening can be separated from the upper pads and replaced in the one opening by filler foam material of a different density prior to return of the upper pads and associated filler foam material to the cover. A kit for preparing a modifiable assembly includes in addition, for at least one of the openings, a plurality of inserts of filler foam material adapted to be removably mounted in the opening, the inserts being of filler foam material having different low densities from each other.
Inventors
- 👤 Theodore R. Morell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:57
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05715; A47; A47C; A47C27/00; A47C27/14; A47C27/148; A61G5/00; A61G5/10; A61G5/1043; A61G5/1045; A61G5/1091; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
165 words
A modifiable pressure distribution pad assembly for a wheelchair comprising: (A) a bottom pad of resilient foam material of high density; (B) at least one upper pad of resilient foam material of an intermediate density less than said high density, said upper pad being supported by said bottom pad and having at least one cutout defining an opening therethrough; (C) filler foam material frictionally mounted as an insert in at least one of said openings of at least one of said upper pads and removable therefrom, said filler foam material having a low density less than said intermediate density; and (D) a cover enclosing said pads, said cover permitting removal of said upper pad and associated filler foam material therefrom so that said filler foam material in one opening can be separated from said upper pad and replaced in said one opening by filler foam material of a different density prior to return of said upper pad and associated filler foam material to said cover.
Claim 2
Dependent Claim
165 words
A modifiable pressure distribution pad assembly for a wheelchair comprising: (A) a bottom pad of resilient foam material of high density; (B) at least one upper pad of resilient foam material of an intermediate density less than said high density, said upper pad being supported by said bottom pad and having at least one cutout defining an opening therethrough; (C) filler foam material frictionally mounted as an insert in at least one of said openings of at least one of said upper pads and removable therefrom, said filler foam material having a low density less than said intermediate density; and (D) a cover enclosing said pads, said cover permitting removal of said upper pad and associated filler foam material therefrom so that said filler foam material in one opening can be separated from said upper pad and replaced in said one opening by filler foam material of a different density prior to return of said upper pad and associated filler foam material to said cover.
Claim 3
Dependent Claim
24 words
The assembly of claim 1 wherein said openings and said inserts are configured and dimensioned for frictional retention of said inserts in said openings.
Claim 4
Dependent Claim
15 words
The assembly of claim 2 wherein said inserts and said openings are rectangular in configuration.
Claim 5
Dependent Claim
15 words
The assembly of claim 3 wherein said inserts and said openings are square in configuration.
Claim 6
Dependent Claim
25 words
The assembly of claim 1 additionally including a substantially inflexible foundation panel disposed beneath said bottom pad, said cover enclosing said panel and said pads.
Claim 7
Dependent Claim
13 words
The assembly of claim 1 wherein said cover has manually operable closure means.
Claim 8
Dependent Claim
150 words
A kit for preparing an individualized and modifiable pressure distribution pad assembly for a wheelchair comprising: (A) a bottom pad of resilient foam material of high density; (B) at least one upper pad of resilient foam material of an intermediate density less than said high density, said upper pad having at least one cutout defining an opening therethrough and being adapted to be supported by said bottom pad; (C) for each of at least one of said openings, a plurality of inserts of filler foam material adapted to be removably mounted in said opening, said inserts being of filler foam material having different low densities from each other, said low densities being less than said intermediate density; and (D) a cover adapted to enclose said pads, said cover permitting insertion into and removal from said cover of said upper pad and those of said inserts mounted in said openings thereof.
Claim 9
Dependent Claim
150 words
A kit for preparing an individualized and modifiable pressure distribution pad assembly for a wheelchair comprising: (A) a bottom pad of resilient foam material of high density; (B) at least one upper pad of resilient foam material of an intermediate density less than said high density, said upper pad having at least one cutout defining an opening therethrough and being adapted to be supported by said bottom pad; (C) for each of at least one of said openings, a plurality of inserts of filler foam material adapted to be removably mounted in said opening, said inserts being of filler foam material having different low densities from each other, said low densities being less than said intermediate density; and (D) a cover adapted to enclose said pads, said cover permitting insertion into and removal from said cover of said upper pad and those of said inserts mounted in said openings thereof.
Claim 10
Dependent Claim
36 words
The kit of claim 7 wherein, for each of said openings adapted to mount said inserts, said opening and said inserts therefor are configured and dimensioned for removable frictional mounting of said inserts in said opening.
Claim 11
Dependent Claim
15 words
The kit of claim 8 wherein said inserts and said opening are rectangular in configuration.
Claim 12
Dependent Claim
15 words
The kit of claim 9 wherein said inserts and said opening are square in configuration.
Claim 13
Dependent Claim
31 words
The kit of claim 7 additionally including a substantially inflexible foundation panel adapted to be disposed beneath said bottom pad, said cover being adapted to enclose said panel and said pads.
Claim 14
Dependent Claim
13 words
The kit of claim 7 wherein said cover has manually operable closure means.
Claim 15
Dependent Claim
20 words
The assembly of claim 1 wherein said upper pad is substantially coextensive with said bottom pad except for said cutout.
Claim 16
Dependent Claim
20 words
The kit of claim 7 wherein said upper pad is substantially coextensive with said bottom pad except for said cutout.
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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) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |