Head rest adjusting device
US4840428A · kind A · utility
28Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1988 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Jun 24, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/85
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A head rest adjusting device using a friction mechanism, which permits the forward and backward rotative adjustment of the head rest relative to a head rest stay. The friction mechanism comprises a substantially U-shaped leaf spring receiving the head rest stay therein, and a protruding resilient section is formed on the folded area of the leaf spring so as to give an additional resiliency to the leaf spring per se and thus provide a stable proper friction against the rotation of the head rest about the stay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.