Linear actuator with an internal dampening mechanism

Details Linear actuator with an internal dampening mechanism Linear actuator with an internal dampening mechanism

2005-09-13

2005-09-13

Engle, Patricia L. (Department: 3612)

Vehicle fenders

Buffer or bumper type

Having fluid means within impact means to absorb energy

C293S117000, C280S730100, C180S274000, C060S638000

Reexamination Certificate

active

06942261

ABSTRACT:
A linear actuator with an internal dampening mechanism is disclosed. The actuator has a housing has a first end and a second end and forms an internal chamber. A constricted opening is also added to the actuator at the first end. A piston is disposed within the housing and is capable of sliding along the chamber. The piston has a head portion and a shaft portion. The shaft portion is slidable through the constricted opening whereas the head portion is not slidable through the constricted opening. A fluid is also added to the actuator. The fluid is disposed within the housing. In one embodiment, the actuator is constructed such that the sliding of the shaft portion forces a fluid through the constricted opening such that the movement of the piston is dampened. In an alternative embodiment, the actuator includes one or more second pistons and an orifice. In this embodiment, the actuator is constructed such that the sliding of the piston forces the fluid through the orifice and causes the second pistons to telescopically extend from the first piston.

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