Linear actuator

Details Linear actuator Linear actuator

1984-12-14

1986-06-10

Staab, Lawrence J.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74111, 74164, 74165, F16H 3100

Patent

active

045935718

ABSTRACT:
An apparatus and method for displacing a linear output member by wrapping at least a pair of flexible strands around the periphery of the linear member. The flexible strands are each attached at each end to spaced-apart rotatable members. Rotation of the rotatable members in opposite direction causes engagement of the flexible strands with the linear member as a wrap around the periphery of the linear member. After a grip is effected on the linear member, rotation of the rotatable members in the same direction causes the linear member to be linearly displaced.

REFERENCES:
patent: 272811 (1883-02-01), Wetmore
patent: 2894403 (1959-07-01), Tomko
patent: 3060753 (1962-10-01), Conviser
patent: 3804370 (1974-04-01), Woodard
patent: 3864983 (1975-02-01), Jacobsen
patent: 4060149 (1977-11-01), Henley
patent: 4085625 (1978-04-01), Jung
patent: 4272997 (1981-06-01), Groth
patent: 4351197 (1982-09-01), Carson

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