Seat assembly with inflatable bladder having a single non-reversible pump for inflating and deflating the bladder
US4938528A · kind A · utility
21Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/03
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat assembly with an inflatable bladder for adjustable seat support having an air delivery system for both inflating and deflating the bladder. The air delivery system includes a single, one-directional pump and valve means selectively operable to communicate the pump outlet with the bladder and the pump inlet with atmosphere for inflating the bladder and selectively operable to communicate the pump inlet with the bladder and the pump outlet with atmosphere to deflate the bladder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.