US4491993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for maintaining the shape of a floatation sleep system
Assignee: Individual
•
Filing: 1982-12-15
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Granted: 1985-01-08
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Expires: 2002-12-15
Abstract
Abstract Mechanism for maintaining the shape of a floatation sleep system, such system including a bladder having flexible walls defining a chamber adapted to be filled with fluid and a marginal perimeter edge support for such bladder. The shape maintaining mechanism comprises a sheet of flexible, dimensionally stable material. The sheet is attached to the underside of the bladder along a substantial portion of opposed marginal edges so that it extends, in intimate contact, from one edge, around the adjacent marginal perimeter support, across the top portion of the bladder, around the opposite marginal perimeter support to the other edge. Such sheet is thus constrained to oppose the fluid forces on the marginal perimeter support and maintain the shape of the floatation sleep system.
Inventors
- 👤 Philip J. Santo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:13
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C27/085
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
Mechanism for maintaining the shape of a floatation sleep system, such system including a bladder having flexible walls defining a chamber adapted to be filled with fluid and a marginal perimeter edge support for such bladder, said mechanism comprising: a flexible dimensionally stable sheet; and means for attaching said sheet to opposed marginal edges of said bladder, such means including matting releasable fastener members fixed to opposed marginal edges of the underside of said bladder and opposed marginal edges of said sheet respectively, so that such sheet may extend in intimate contact from one edge, across the top portion of said bladder, around the opposite marginal perimeter support to the other edge, whereby such sheet is constrained to oppose fluid forces on the marginal perimeter support.
Claim 2
Dependent Claim
126 words
Mechanism for maintaining the shape of a floatation sleep system, such system including a bladder having flexible walls defining a chamber adapted to be filled with fluid and a marginal perimeter edge support for such bladder, said mechanism comprising: a flexible dimensionally stable sheet; and means for attaching said sheet to opposed marginal edges of said bladder, such means including matting releasable fastener members fixed to opposed marginal edges of the underside of said bladder and opposed marginal edges of said sheet respectively, so that such sheet may extend in intimate contact from one edge, across the top portion of said bladder, around the opposite marginal perimeter support to the other edge, whereby such sheet is constrained to oppose fluid forces on the marginal perimeter support.
Claim 3
Dependent Claim
50 words
The invention of claim 1 wherein the dimension of said sheet measured between said opposed marginal edges thereof is substantially equal to the distance between said opposed marginal edges of said bladder measured around the said adjacent marginal perimeter support, top portion of said bladder, and opposite marginal perimeter support.
Claim 4
Dependent Claim
118 words
In a floatation sleep system including a bladder having flexible walls defining a chamber adapted to be filled with fluid and a marginal perimeter edge support for such bladder, the improvement comprising: a flexible, dimensionally stable sheet, and means for releasably attaching such sheet to opposed marginal edges of said bladder on the underside thereof along a substantial portion of such edges so that such sheet extends in intimate contact from one edge, around the adjacent marginal perimeter support, across the top portion of said bladder, around the opposite marginal support to the other edge, whereby such sheet is constrained to oppose fluid forces on the marginal perimeter support to maintain the shape of such floatation sleep system.
Claim 5
Dependent Claim
118 words
In a floatation sleep system including a bladder having flexible walls defining a chamber adapted to be filled with fluid and a marginal perimeter edge support for such bladder, the improvement comprising: a flexible, dimensionally stable sheet, and means for releasably attaching such sheet to opposed marginal edges of said bladder on the underside thereof along a substantial portion of such edges so that such sheet extends in intimate contact from one edge, around the adjacent marginal perimeter support, across the top portion of said bladder, around the opposite marginal support to the other edge, whereby such sheet is constrained to oppose fluid forces on the marginal perimeter support to maintain the shape of such floatation sleep system.
Claim 6
Dependent Claim
34 words
The invention of claim 3 wherein said attaching means includes matting releasable fastener members respectively fixed to said opposed marginal edges of the underside of said bladder and opposed marginal edges of said sheet.
Claim 7
Dependent Claim
50 words
The invention of claim 4 wherein the dimension of said sheet measured between said opposed marginal edges thereof is substantially equal to the distance between said opposed marginal edges of said bladder measured around the said adjacent marginal perimeter support, top portion of said bladder, and opposite marginal perimeter support.
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) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |