Rotation mechanism for sequential angular variation of a backrest
US7134724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/2352
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The adjustment device comprises a toothed quadrant connected to the sitting surface, and a toothed quadrant which is connected to the back and which can be meshed into the toothed quadrant connected to the sitting surface, in a locked configuration of the seat, and can be demeshed from the toothed quadrant connected to the sitting surface, in an unlocked configuration of the seat, making it possible to adjust the angular position of the back with respect to the sitting surface,an element which possesses a stepped quadrant having a first convex surface and at least one second convex surface, each defining an angular sequence, which are connected to one another by a stop surface,a pawl possessing a tooth capable of following each convex surface until it comes to bear against a stop surface, and an element to pivot the pawl in order to release the tooth from a stop surface, so as to cause the seat to change from one angular sequence to the next sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.