US5311623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydropneumatic mattress
Assignee: Individual
•
Filing: 1992-10-16
•
Granted: 1994-05-17
•
Expires: 2012-10-16
Abstract
Abstract A hydropneumatic mattress with upper water containing tubes and lower air containing tubes is disclosed. The upper and lower tubes are supported by a layer. The tubes are individually removable for replacement. The mattress construction is especially desirable because it is articulatable along its length.
Inventors
- 👤 Elias A. M. Hendi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C27/085; A47C27/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
168 words
A hydropneumatic mattress having a length and a width and with the length being greater than the width, said hydropneumatic mattress comprising: a top layer; an intermediate flexible impervious layer a bottom layer; a plurality of air containing tubes situated between said bottom and intermediate layers, said air containing tubes extending transversely of the mattress across its width; a plurality of water containing tubes situated between said intermediate and top layers, said water containing tubes extending transversely of the mattress across its width; each said water containing tube being positioned directly above an air containing tube; each said water containing tube and each said air containing tube being individually removable from said mattress; each said air containing tube having a valve to enable adjustment of the amount of air in each said air containing tube; each said water containing tube having a valve to enable adjustment of the amount of water in each said water containing tube; and said mattress when in use being articulatable along its length.
Claim 2
Dependent Claim
168 words
A hydropneumatic mattress having a length and a width and with the length being greater than the width, said hydropneumatic mattress comprising: a top layer; an intermediate flexible impervious layer a bottom layer; a plurality of air containing tubes situated between said bottom and intermediate layers, said air containing tubes extending transversely of the mattress across its width; a plurality of water containing tubes situated between said intermediate and top layers, said water containing tubes extending transversely of the mattress across its width; each said water containing tube being positioned directly above an air containing tube; each said water containing tube and each said air containing tube being individually removable from said mattress; each said air containing tube having a valve to enable adjustment of the amount of air in each said air containing tube; each said water containing tube having a valve to enable adjustment of the amount of water in each said water containing tube; and said mattress when in use being articulatable along its length.
Claim 3
Dependent Claim
19 words
The hydropneumatic mattress of claim 1 further including means for inflation and deflation of the said air containing tubes.
References Cited (Backward Citations)
US779576A
Cited
US2691179A
Cited
US3772717A
Cited
US3766579A
Cited
US4079473A
Cited
US4193149A
Cited
US4999867A
Cited
US4945588A
Cited
US5010608A
Cited
US5090077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |