Seat belt retractor
US4951896A · kind A · utility
1Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Dec 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R22/44
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat belt retractor comprises a spool or shaft onto which a seat belt may be retracted. A first relatively weak spring is provided which tends to wind the belt onto the spool or reel. A second stronger spring is also provided which tends to wind the belt onto the reel but the second spring is only activated selectively, for example when the buckle is released. Thus the strong spring does not, in normal circumstances, pull the belt tightly across the chest of a person wearing it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.