Headrest device
US6543852B2 · kind B2 · utility
8Cited by
11References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jun 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/02253
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A headrest device includes a thinner and improved positioning of the vertical position adjusting device. A geared or threaded drive shaft and a guide are positioned parallel to each other and parallel relative to a backrest. The driving force is directly transmitted from a motor unit positioned at the upper portion of the drive shaft and the guide to the drive shaft without a gear cable. The motor unit is directly assembled between a pair of longitudinal stay shaft portions at the upper portion of a seat backrest frame without a bracket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.