Single chain linear actuator

Details Single chain linear actuator Single chain linear actuator

2011-03-15

2011-03-15

Johnson, Vicky A (Department: 3656)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

Reexamination Certificate

active

07905156

ABSTRACT:
A linear actuator comprises a chain having adjacent first and second links. A pivotal connection pivotally connects the first link to the second link. The first link is pivotable about a pivot axis which is non-perpendicular to a longitudinal axis of the first link. A locking mechanism releasably locks the first link and the second link to prevent the first link from pivoting about the pivot axis. A releasing mechanism releases the locking mechanism to allow the first link to pivot about the pivot axis. A drive mechanism moves the chain between an extended position and a retracted position. At least a portion of the chain is helically wound when the chain is in the retracted position.

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