Pressure regulation for an inflatable cushion
US6598250B1 · kind B1 · utility
53Cited by
14References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2000 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Mar 29, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/1045
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An inflatable cushion is disclosed, having features that allow deflation of the cushion to be controlled. The cushion includes an inflatable bladder having a support therein and a valved exhaust tube in fluid communication therewith. An indicator coupled to the exhaust tube indicates when fluid is exiting the exhaust tube. When sat upon, the cushion deflates only by a preselected amount. This allows the cushion to be consistently and easily deflated to a predetermined inflation height.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.