Articulation members for back portion of vehicle seats
US4770464A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2205/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The articulation member comprises asymetrically guided bearing plates. A fixed flange is shaped in order to support, by means of sectors, sliding bearing plates having an upper toothing pitch corresponding to pitch of a toothing of a movable flange. The bearing plates are normally pushed back from the toothing by elastic means and have positions which are angularly shifted for two of them and submitted to bias of control means such as a cam. An angular shift of two of the bearing plates is of 120.degree.-.alpha./3 (=240.degree.-2/3.alpha.) with for complement 120.degree.+2/3.alpha., .alpha.being an angle forming a pitch for each tooth of the toothed ring and teeth of the bearing plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.