US4969684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for an easy chair, sofa and the like
Assignee: Individual
•
Filing: 1989-08-18
•
Granted: 1990-11-13
•
Expires: 2009-08-18
Abstract
Abstract A structure for an easy chair, sofa, or the like, which affords improved comfort and a simple construction, comprises a plurality of deformable sealed blisters containing a fluid having a set boiling temperature, such as a Freon, and electric resistance heaters associated with said blisters to vary the fluid temperature and, hence, the blister volumes and pressures.
Inventors
- 👤 Claudio Zarotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:55
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/54; A47C27/00; A47C27/08; A47C27/081; A47C27/082; A47C31/00; A47C31/12; A47C31/126; A47C7/00; A47C7/36; A47C7/40; A47C7/46; A47C7/467; H; H01; H01H; H01H9/00; H01H9/02; H01H9/0214; H01H9/0235; Y; Y10; Y10S; Y10S297/00; Y10S297/03; Y10S5/00; Y10S5/948; Y10T; Y10T428/00; Y10T428/23; Y10T428/231
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
A cushion for an easy chair, sofa and the like comprising: a plurality of deformable sealed blisters disposed in said cushion, each of said sealed blisters containing a fluid having a set boiling point near ambient room temperature and heater means disposed in said cushion adjacent each of said blisters for changing the temperature of said fluid in each blister in a manner to cause a liquid to vapor transition of at least some of the fluid to select the desired softness of the cushion.
Claim 2
Dependent Claim
85 words
A cushion for an easy chair, sofa and the like comprising: a plurality of deformable sealed blisters disposed in said cushion, each of said sealed blisters containing a fluid having a set boiling point near ambient room temperature and heater means disposed in said cushion adjacent each of said blisters for changing the temperature of said fluid in each blister in a manner to cause a liquid to vapor transition of at least some of the fluid to select the desired softness of the cushion.
Claim 3
Dependent Claim
21 words
A cushion as set forth in claim 1, wherein said fluid is comprised of a mixture of at least two Freons.
Claim 4
Dependent Claim
41 words
A cushion as set forth in claim 2, wherein said blisters are disposed in two sets with the blisters in one set being normally in a collapsed state and the blisters in the other set being normally in an expanded state.
Claim 5
Dependent Claim
34 words
A cushion as set forth in claim 3, wherein said two sets of blisters are disposed in two superimposed layers of blisters including an upper layer of blisters and a lower layer of blisters.
Claim 6
Dependent Claim
25 words
A cushion as set forth in claim 4, wherein the fluid in said upper layer of blisters has a boiling temperature of about 30° C.
Claim 7
Dependent Claim
28 words
A cushion as set forth in claim 5, wherein the fluid in said upper layer of blisters is a mixture containing 70% Freon 11 and 30% Freon 113.
Claim 8
Dependent Claim
25 words
A cushion as set forth in claim 4, wherein the fluid in the lower layer of blisters has a boiling temperature of about 40° C.
Claim 9
Dependent Claim
28 words
A cushion as set forth in claim 7, wherein the fluid in the lower layer of blisters is a mixture containing 20% Freon 11 and 80% Freon 113.
Claim 10
Dependent Claim
38 words
A cushion as set forth in claim 4, wherein said heater means are disposed adjacent the blisters in said lower layer of blisters and further comprising a push button panel having push buttons for controlling said heater means.
Claim 11
Dependent Claim
34 words
A cushion as set forth in claim 9, further comprising position transducers associated with each blister in said lower layer of blisters for providing a height signal indicative of the height of each blister.
Claim 12
Dependent Claim
43 words
A cushion as set forth in claim 10, further comprising a control unit connected to said position transducers for receiving the height signal for each blister and keying push buttons for storing each reference height signal and an identification code of a user.
Claim 13
Dependent Claim
27 words
A cushion as set forth in claim 11, further comprising push buttons for controlling the heater means disposed adjacent each blister in said upper layer of blisters.
Claim 14
Dependent Claim
40 words
A cushion as set forth in claim 12, further comprising pressure transducers associated with each blister in said upper layer of blisters for providing a pressure signal indicative of the pressure in each blister in said upper layer of blisters.
Claim 15
Dependent Claim
47 words
A cushion as set forth in claim 13, wherein each of said pressure transducers is connected to said control unit, said keying push buttons being operable for storing reference pusher values for each blister in said upper layer of blisters and an identification code of a user.
Claim 16
Dependent Claim
18 words
A cushion as set forth in claim 14, wherein said heater means are comprised of electric resistant heaters.
Claim 17
Dependent Claim
17 words
A cushion as set forth in claim 14, wherein said heater means are comprised of Peltier elements.
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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) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |