Pressurized actuator
First Claim
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1. A linear actuator containing:
- a housing having a first end and a second end;
a hollow piston rod contained within said housing, said hollow piston rod containing an inner wall, said piston rod having a third end and a fourth end, the third end proximate to the first end and the fourth end proximate to the second end;
a sealed gas chamber defined by the inner wall of the hollow piston rod;
a pressurized gas contained within the sealed gas chamber prior to activation of the actuator; and
an initiator fixed at the first end and proximate to the third end of the piston rod, for releasing the pressurized gas upon activation of the actuator to thereby drive the piston rod.
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Accused Products
Abstract
A linear actuator contains a housing having a first end and a second end. A hollow piston is positioned within the housing to slidably engage with an inner wall of the housing. A sealed gas chamber is formed within the hollow piston and contains stored gas for driving the piston upon activation of the actuator.
12 Citations
10 Claims
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1. A linear actuator containing:
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a housing having a first end and a second end; a hollow piston rod contained within said housing, said hollow piston rod containing an inner wall, said piston rod having a third end and a fourth end, the third end proximate to the first end and the fourth end proximate to the second end; a sealed gas chamber defined by the inner wall of the hollow piston rod; a pressurized gas contained within the sealed gas chamber prior to activation of the actuator; and an initiator fixed at the first end and proximate to the third end of the piston rod, for releasing the pressurized gas upon activation of the actuator to thereby drive the piston rod. - View Dependent Claims (2, 3, 4, 5)
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6. A linear actuator containing:
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a housing having a first end and a second end; a hollow piston rod contained within said housing, said hollow piston rod defining an interior contained therein, said piston having a third end and a fourth end, the third end proximate to the first end and the fourth end proximate to the second end; a sealed gas chamber formed as the interior of the hollow piston rod; a pressurized gas contained within the sealed gas chamber prior to activation of the actuator; an initiator fixed at the first end and proximate to the third end of the piston rod for releasing the pressurized gas upon activation of the actuator; a first annular plug fixed on said piston rod at said third end; a surface area on said first plug, said surface area in operable communication with said pressurized gas upon actuation of said linear actuator to drive said piston.
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7. A linear actuator comprising:
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a housing having a first end and a second end, and an inner wall; a hollow piston rod having a third end and a fourth end, the third end proximate to the first end and the fourth end proximate to the second end, said hollow piston rod defining an interior; a sealed gas chamber defined by the interior of the hollow piston rod; a stored gas contained within the sealed gas chamber; an initiator fixed at the first end and proximate to the third end of the piston rod for releasing the stored gas upon activation of the actuator; a first flange formed on said third end, said first flange having a first outer diameter slidably engaged with said inner wall; a second flange formed on said third end, said second flange positioned closer to said initiator and said second flange having a second outer diameter smaller than said first outer diameter; and an annular conduit formed between said inner diameter and said second flange for passage of gas upon activation of said actuator. - View Dependent Claims (8, 9, 10)
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Specification