Geometrically efficient self-inflating seat cushion
US5469592A · kind A · utility
Inventor
Key dates
| Filing date | Sep 27, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Sep 27, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A self-inflating seat cushion is shown with airtight hollow body 32 comprising flexible material and resilient structure member 30 comprising foam. Hollow, resilient structure member 30, made of flat portions of material, can lie on the inside or attach to the outside of airtight hollow body 32. During inflating, resilient structure member 30 expands moving airtight hollow body 32 into an arching configuration with high volume relative to its dimensions. A proportionate volume of air flows into the chamber. During use, the chamber flattens and deforms, airtight hollow body 32's volume diminishes, its internal pressure increases proportionately, and the seat cushions and supports weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.