US4914762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable cushion
Assignee: Individual
•
Filing: 1988-09-02
•
Granted: 1990-04-10
•
Expires: 2008-09-02
Abstract
Abstract The inflatable cushion includes a front and rear cloths or flexible sheets having a substantially trapezoidal outline, a peripheral band arranged between and tightly sealed to the front and rear cloths to delimit therewith a sealed enclosure, and a valve means or opening for controllably supplying a fluid to, and discharging it from, the enclosure.
Inventors
- 👤 Luigi Perali
- 👤 Costanza Perali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:45
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C4/00; A47C4/54; A47C7/00; A47C7/36; A47C7/40; A47C7/42; A47C7/425; A47C7/46; A47C7/467; A61F2007/0001; A61F2007/0091; A61F2007/0092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
An inflatable cushion having: a front larger cloth and a rear narrower cloth each having a major and a smaller base and two sides which define a substatially trapezoidal border outline, an intermediate band extending between, and tightly sealed to, the borders of said front cloth and rear cloth to delimit therewith a sealed enclosure for a fluid, said band having a narrower width along said major and said smaller base and a larger width along the two sides of said flexible sheets, and a check valve means for supplying a fluid to said enclosures, to erect the cushion to a biconvex lens-like configuration where it comprises an intermediate wider transverse portion and an upper portion and a lower portion growing thiner from the intermediate portion outwards.
Claim 2
Dependent Claim
127 words
An inflatable cushion having: a front larger cloth and a rear narrower cloth each having a major and a smaller base and two sides which define a substatially trapezoidal border outline, an intermediate band extending between, and tightly sealed to, the borders of said front cloth and rear cloth to delimit therewith a sealed enclosure for a fluid, said band having a narrower width along said major and said smaller base and a larger width along the two sides of said flexible sheets, and a check valve means for supplying a fluid to said enclosures, to erect the cushion to a biconvex lens-like configuration where it comprises an intermediate wider transverse portion and an upper portion and a lower portion growing thiner from the intermediate portion outwards.
Claim 3
Dependent Claim
47 words
An inflatable cushion as claimed in claim 1 wherein, in its inflated condition, it takes a substantially truncated-pyramid configuration, said front cloth defining the major base of the truncated-pyramid, said rear cloth defining the minor base of the truncated-pyramid and said band defining the lateral surface thereof.
Claim 4
Dependent Claim
26 words
An inflatable cushion as claimed in claim 1 wherein, in its lesser inflated condition, said front said said rear cloth are substantially parallel to one other.
Claim 5
Dependent Claim
24 words
An inflatable cushion as claimed in claim 3 wherein, at least two cushions in said lesser inflated condition are assembled to form a mattress.
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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |