Mechanism for adjusting the back portion of a seat
US5216936A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Mar 5, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20636
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An adjusting mechanism for the back portion of a seat comprises a fixed circular flange attached to an armature of the sitting portion of the seat. The fixed flange has a cup-shaped recess and cutouts spaced at 120.degree. from one another. Each cutout contains a block with an outer toothing. The blocks are resting on block-pushing members each provided with a finger facing the mobile flange. The block-pushing members rest on a cam with three steps. The fingers of the block-pushing members cooperate with a release ring housed inside the mobile flange and having three projections provided for pushing the block-pushing members toward the center of the adjusting mechanism when the cam is pivoted in a direction for moving the back portion of the seat onto the sitting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.