Head rest apparatus
US5322347A · kind A · utility
1Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1992 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Sep 23, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/829
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A head rest apparatus comprises a sole stay, a head rest main body movably supported on the sole stay, a guide rod fixed in the head rest main body, a rail disposed in the head rest main body and fixed on the sole stay, a guide member slidably supported on the guide rod and the rail, a screw rotatably supported in the head rest main body, a nut supported on the rail and engaged with the screw, a cushion disposed between the rail and the nut, and a motor connected to the screw or the nut. A load imparted to the head rest main body is absorbed by the sliding movement of the guide member and the distortion of the cushion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.