Device for locally adjusting the tension of an elastic sheet, in particular for a vehicle seat
US4588172A · kind A · utility
24Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1985 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18336
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In order to soften or stiffen the support offered by an elastic sheet, and in particular a vehicle seat back, the device comprises a flat spring (1) which is at each of its ends connected to the sheet (38), and fixed to a case (2, 3) containing an inclined disc (10, 12). Two discs are fixed to a control rod (24) which is mounted in the frame (36) of the seat and, when this rod is rotated, they cause the cases to be pivoted symmetrically, so that the spring is extended and stiffens the sheet or is shortened and renders the seat more soft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.