Seat belt retractor
US6712305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Aug 19, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/286
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat belt retractor has a spool mounted for rotation in the retractor for retraction or pay-out of seat belt webbing depending upon the direction of rotation of the spool. A locking ring is attached to one end of the spool. A device for locking locks the locking ring against rotation in a crash. A force limiting device allowing further pay-out of the seat belt webbing after the locking ring has locked, under the influence of a vehicle occupant's forward momentum. The force limiting device has a length of wire, attached at one end to one of the spool or the locking ring, and wound, at a distance spaced from said one end, on a pin fixed to the other end of the spool or the locking ring. Under the influence of crash forces above a predetermined value the wire is pulled around the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.