Patent US3982786A successfully refreshed from Google Patents.
US3982786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair or armchair
Assignee: Individual
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Filing: 1974-09-23
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Granted: 1976-09-28
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Expires: 1994-09-23
Abstract
Abstract The invention concerns a chair or an armchair with a seat cushion and a back rest cushion, of which at least one is composed of several cushion elements forming a grid and capable of being filled with a flowable medium, at least a number of which elements are capable of being connected exclusively with each other through pipes containing at least one valve.
Inventors
- 👤 Gerard Burgin
- 👤 Adolf Klingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:17
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/54; A47C27/00; A47C27/08; A47C27/081; A47C27/10; A47C7/00; A47C7/36; A47C7/40; A47C7/42; A47C7/425; A47C7/46; A47C7/467; B; B60; B60N; B60N2/00; B60N2/90; B60N2/914; Y; Y10; Y10S; Y10S297/00; Y10S297/03
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
102 words
A fluid cushion including in combination a first and a second fluid impervious cell, the cells being disposed in a generally planar array to provide a load supporting surface, the first and second cells containing normally constant masses of fluid independent of the loading on said support surface, the first cell comprising a first and a second cushion element, the second cell being disposed intermediate the first and second elements, and means responsive to the loading on said support surface for permitting reversible fluid flow between the first and second elements upon predetermined positive and negative differences in the fluid pressures therebetween.
Claim 2
Dependent Claim
102 words
A fluid cushion including in combination a first and a second fluid impervious cell, the cells being disposed in a generally planar array to provide a load supporting surface, the first and second cells containing normally constant masses of fluid independent of the loading on said support surface, the first cell comprising a first and a second cushion element, the second cell being disposed intermediate the first and second elements, and means responsive to the loading on said support surface for permitting reversible fluid flow between the first and second elements upon predetermined positive and negative differences in the fluid pressures therebetween.
Claim 3
Dependent Claim
35 words
A cushion as in claim 1 further including a source of fluid and means for selectively coupling said source to the first and second cells, to vary the normally constant masses of fluid contained therein.
Claim 4
Dependent Claim
43 words
A cushion as in claim 1 further including a source of fluid and means for selectively coupling said source to the first and second elements and to the second cell, to vary the masses of fluid contained in the first and second cells.
Claim 5
Dependent Claim
49 words
A fluid cushion as in claim 1 wherein the second cell comprises a third and a fourth cushion element, the cushion further including means responsive to the loading on said support surface for permitting fluid flow between the third and fourth elements upon predetermined differences in fluid pressures therebetween.
Claim 6
Dependent Claim
38 words
A fluid cushion as in claim 1 further including a third fluid impervious cell disposed in said generally planar array, the third cell containing a normally constant mass of fluid independent of the loading on said support surface.
Claim 7
Dependent Claim
19 words
A fluid cushion as in claim 5 wherein the third cell is disposed intermediate the first and second elements.
Claim 8
Dependent Claim
49 words
A fluid cushion as in claim 5 wherein the third cell comprises a third and a fourth cushion element, the cushion further including means responsive to the loading on said support surface for permitting fluid flow between the third and fourth elements upon predetermined differences in fluid pressures therebetween.
Claim 9
Dependent Claim
47 words
A fluid cushion as in claim 7 wherein the third cell comprises a fifth cushion element, the cushion further including means responsive to the loading on said support surface for permitting fluid flow between the fourth and fifth cushion elements upon predetermined differences in fluid pressures therebetween.
Claim 10
Dependent Claim
16 words
A cushion as in claim 1 wherein the load responsive means includes a pressure relief valve.
Claim 11
Dependent Claim
49 words
A cushion as in claim 1 wherein the load responsive means includes a first pressure relief valve permitting a flow of fluid from the first element to the second element and a second pressure relief valve permitting a flow of fluid from the second element to the first element.
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) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |