Lumbar support actuation
US5562324A · kind A · utility
75Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/665
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat (10) including a backrest portion (16) with seat back support (24) providing selective lumbar support to a user. The seat back support (24) includes a pair of clam-shell shaped air bladders (28, 30) with their movable, expanding ends (36, 38) facing one another. Divider members (42, 44) split each of the bladders (28, 30) into separate side-by-side air sections to maintain the clam-shell shape of the bladders (28, 30) preventing bowing in the center of the seat back (14). The bladders (28, 30) support and move a flexible plate (70) connected thereover to provide selective contoured adjustment to the lumbar region of a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.