US4688285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated medical cushion or pad
Assignee: MISSIONS FOR CHRIST
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Filing: 1986-09-22
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Granted: 1987-08-25
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Expires: 2006-09-22
Abstract
Abstract A medical cushion for minimizing pressure areas on portions of the human anatomy and enhancing air circulation therearound, the cushion having an elastomeric body with a substantially overall rectangular cross-sectional configuration and having top, bottom and side surfaces, an aperture extending completely through the cushion from top to bottom, a plurality of slots in each of the top and bottom surfaces extending through said side surface and into the aperture, the slots and aperture being of sufficient size and number as to provide substantial air flow under, through and over the cushion in a continuous uninterrupted circulating manner.
Inventors
- 👤 Mildred E. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05723; A47; A47G; A47G9/00; A47G9/10; A47G9/1009; A47G9/1054
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A medical cushion for minimizing pressure areas on portions of the human anatomy and enhancing air circulation therearound, comprising an elastomeric body having a substantially overall rectangular cross-sectional configuration and having a top surface, a bottom surface and side surface means, aperture means extending completely through the cushion from top to bottom providing aperture surface means, a plurality of slot means in each of said top and bottom surfaces spaced angularly around said aperture means and extending through said side surface means and said aperture surface means, the top slot means being angularly offset from the bottom slot means, said slot means and aperture means being in sufficient size and number to provide substantial air flow under, through and over the cushion in a continuous uninterrupted circulating manner.
Claim 2
Dependent Claim
128 words
A medical cushion for minimizing pressure areas on portions of the human anatomy and enhancing air circulation therearound, comprising an elastomeric body having a substantially overall rectangular cross-sectional configuration and having a top surface, a bottom surface and side surface means, aperture means extending completely through the cushion from top to bottom providing aperture surface means, a plurality of slot means in each of said top and bottom surfaces spaced angularly around said aperture means and extending through said side surface means and said aperture surface means, the top slot means being angularly offset from the bottom slot means, said slot means and aperture means being in sufficient size and number to provide substantial air flow under, through and over the cushion in a continuous uninterrupted circulating manner.
Claim 3
Dependent Claim
55 words
The cushion of claim 1 wherein the volumetric ratio of rhe total volume of said aperture means to the total overall cushion volume is from about 0.01 to about 0.15, and the volumetric ratio of the total volume of said slot means to the total overall cushion volume is from about 0.08 to about 0.35.
Claim 4
Dependent Claim
44 words
The cushion of claim 1 wherein the cushion is substantially disc shaped, the aperture means comprises a single aperture substantially centrally located in the cushion, and wherein three to six slots are located in each of said top and bottom surfaces of said cushion.
Claim 5
Dependent Claim
24 words
The cushion of claim 3 wherein the said aperture means is tapered inwardly from said top surface to said bottom surface of said cushion.
Claim 6
Dependent Claim
24 words
The cushion of claim 1 wherein multiple aperture means are provided and at least some of which are directly interconnected by said slot means.
References Cited (Backward Citations)
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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) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |