Power actuator

Details Power actuator Power actuator

2005-07-05

2005-07-05

Cuomo, Peter M. (Department: 3636)

Chairs and seats

Body or occupant restraint or confinement

Safety belt or harness; e.g., lap belt or shoulder harness

C297S480000, C297S027000

Reexamination Certificate

active

06913319

ABSTRACT:
Provided is a compact power actuator which is simple in structure, reliable in operation, and easy to install. The power actuator comprises a piston assembly which is received in a fixed cylinder for either directly or indirectly engaging a driven member, and a propellant for rapidly increasing the inner pressure of the cylinder to push the piston assembly outward so that the driven member may be instantaneously driven. A spring is interposed between the piston assembly and the propellant to urge the piston assembly in the projecting direction. The front end of the propellant fits into the central opening so that the available space may be fully utilized. Therefore, the size of the power actuator can be reduced, and the required amount of the pyrotechnic material for the propellant can be reduced due to the reduced initial volume of the chamber for the expansion of the generated gas.

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