PYROTECHNIC ACTUATOR FOR RETRACTING A PISTON
First Claim
1. A pyrotechnic actuator comprising:
- a housing;
a combustion chamber located in the housing;
a pyrotechnic charge disposed in the combustion chamber for producing a combustion gas;
an initiator associated with the combustion chamber; and
a piston disposed in the housing for movement from an extended position to a retracted position in response to combustion of the pyrotechnic charge.
1 Assignment
0 Petitions
Accused Products
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.
27 Citations
24 Claims
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1. A pyrotechnic actuator comprising:
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a housing; a combustion chamber located in the housing; a pyrotechnic charge disposed in the combustion chamber for producing a combustion gas; an initiator associated with the combustion chamber; and a piston disposed in the housing for movement from an extended position to a retracted position in response to combustion of the pyrotechnic charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 21, 22)
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8. A pyrotechnic actuator for pulling a pin, the pyrotechnic actuator comprising:
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a housing defining a longitudinal axis and including a distal end defining an opening; a piston disposed in the housing for movement along the longitudinal axis between an extended position and a retracted position, the piston carrying the pin, the pin at least partially extends from the housing in the extended position, the piston carrying a combustion chamber; and 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. - View Dependent Claims (9, 10, 11, 12, 13, 14, 23, 24)
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15-20. -20. (canceled)
Specification