Pyrotechnic actuator for retracting a piston
US7735405B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2008 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Mar 14, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/38
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A safety arrangement for a motor vehicle includes a pyrotechnic actuator for retracting a hinge pin of a vehicle hood. The pyrotechnic actuator includes a housing defining a longitudinal axis and further includes a first end defining an opening. The pyrotechnic actuator additionally includes a piston disposed in the housing for movement along the longitudinal axis between an extended position and a retracted position. The piston carries the pin. The pin at least partially extends from the housing in the extended position. The piston includes a base portion defining a combustion chamber. The pyrotechnic actuator further includes a pyrotechnic charge disposed in the combustion chamber for producing a combustion gas operative to move the piston from the extended position to the retracted position. The combustion chamber is defined by a thin walled member that is sealed to contain the ballistic event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.