Automotive seatbelt take-up device
US6431485B1 · kind B1 · utility
10Cited by
9References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/4433
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automotive seatbelt take-up device has a primary spiral spring biasing a take-up shaft in a seatbelt take-up direction. A spring clutch transfers rotation of the take-up shaft in a seatbelt drawing-out direction to a ring. A secondary spiral spring is capable of generating rotational biasing force on the take-up shaft in a direction opposite that of the primary spiral spring. Thus, the present invention provides an automotive seatbelt take-up device that can reduce both the drawing-out force and the take-up force of a seatbelt when the seatbelt is being worn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.