Restraint pretensioner with deacceleration mechanism
US9145108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2011 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Jul 4, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D25/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Disclosed is a pretensioner for an occupant restraint. The pretensioner is designed to be used in conjunction with an inertial reel that locks the occupant restraint when detecting an adverse event. The pretensioner acts to remove slack in the webbing of the restraint and thereby safely secure the occupant once the reel is locked. The pretensioner described herein includes a rack that is initially held in place by a shear pin. Upon being activated, the rack is forced to a fully extended orientation, whereby the shear pin is severed. A deceleration ramp in included beneath the rack to slowly bring the rack to a stop at the end of the stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.