US3600726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support force distribution apparatus
Assignee: BIO CLINIC Corp A CORP OF DE
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Filing: 1969-03-17
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Granted: 1971-08-24
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Expires: 1989-03-17
Abstract
Abstract The specification and drawing discloses a therapeutic or comfort pad as for sitting. The apparatus includes a flexible film outer envelope substantially filled with a fluid pervious foam material. Water or other noncompressible fluid is introduced through a valve in the envelope and the proportion of air to water to foam is adjusted at the valve by the introduction or withdrawal of air and/or water therethrough.
Inventors
- 👤 Harry Albert Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:29
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/18; A47C27/08; A47C27/081; A47C27/085; A47C27/088
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
55 words
Force distribution cushion apparatus comprising: a deformable plastic film envelope defining a hydraerically sealable internal volume; fluid permeable plastic foam means disposed within and extending substantially throughout said predetermined internal volume, a liquid disposed within said envelope and partially filling said volume, and a gas also disposed within said envelope and partially filling said volume.
Claim 2
Dependent Claim
55 words
Force distribution cushion apparatus comprising: a deformable plastic film envelope defining a hydraerically sealable internal volume; fluid permeable plastic foam means disposed within and extending substantially throughout said predetermined internal volume, a liquid disposed within said envelope and partially filling said volume, and a gas also disposed within said envelope and partially filling said volume.
Claim 3
Dependent Claim
23 words
The invention according to claim 1 which further includes valve means carried by said envelope body means for controllably introducing fluid material therewithin.
Claim 4
Dependent Claim
34 words
The invention according to claim 2 in which said foam material is fluid permeable to a degree such that at least approximately 75 percent of said predetermined volume may be filled with said liquid.
Claim 5
Dependent Claim
31 words
The invention according to claim 3 in which said foam material is low density, expanded cellular in character and is in the class of materials comprising polyurethane and polyethylene plastic foam.
Claim 6
Dependent Claim
31 words
The invention according to claim 1 wherein the quantity of substantially noncompressible fluid disposed within said body envelope is such as to fill approximately 60 to 80 percent of said volume.
Claim 7
Dependent Claim
25 words
The invention according to claim 4 wherein the gaseous fluid disposed within said envelope body means fills at least approximately 10 percent of said volume.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |