Seat back with adjustable lumbar supporter
US4155592A · kind A · utility
78Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1978 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Jun 29, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/6673
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A plurality of belts or wires are slackly strung between supporters mounted on the upright leg portions of a backrest frame to cross the front of the frame. Electrically driven tensioning means successively tensions each belt or wire to cause same to become taut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.