Automotive seat back recliner
US5833317A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Aug 29, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/1818
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The seat back flanges (32) mount a seat back (34) to a seat frame for reclining movement relative to the seat frame and a control mechanism controls the pivotal movement of the seat back (34). The control mechanism includes a tubular cylinder (54) and a first coil spring (56) is wound around and in gripping engagement with the cylinder (54). The cylinder (54) is non-rotatably secured to the seat frame by being welded or otherwise secured to the flanges (32). The first coil spring (56) has first (58) and second (60) ends extending tangentially from the cylinder (54). A second coil spring (62) is wound in the opposite direction around and is in gripping engagement with the cylinder (54) and, likewise, has third (64) and fourth (66) ends extending tangentially from the cylinder (54). A cam shaft (72) is included for moving the second end (60) relative to the first end (58) for unwinding the first coil spring (56) in a clockwise direction from the gripping engagement with the cylinder (54) to allow the pivotal movement of the seat back (34) relative to the seat frame and for moving the fourth end (66) relative to the third end (64) for unwinding the second coil spring (62) in a counter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.