Actuator lock

Details Actuator lock Actuator lock

1993-12-07

1995-04-18

Denion, Thomas E.

Expansible chamber devices

With releasable stop or latch means to prevent movement of...

Means includes element interfitting between working member...

92 27, 92 28, F15B 1526

Patent

active

054068797

ABSTRACT:
An actuator lock is provided to prevent movement of an actuator until the actuator lock is released. A first member of the lock is movable in response to fluid pressure within a chamber to move from a locked position to an unlocked position allowing the actuator to move. The first member is held at the unlock position by a latching member so that the lock cannot return to the locked position. During testing of the actuator, a test member is operable to reversibly move the first member from the locked position to an unlocked and unlatched position.

REFERENCES:
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patent: 3320861 (1967-05-01), Johnson et al.
patent: 3353454 (1967-11-01), Donovan
patent: 3356186 (1967-12-01), Lambers
patent: 3470793 (1969-10-01), Hanchen
patent: 4257315 (1981-03-01), Tisell et al.
patent: 4471944 (1984-09-01), Leray et al.
patent: 4524676 (1985-06-01), Rogers
patent: 4795110 (1989-01-01), Lang
patent: 5056418 (1991-10-01), Granger et al.
patent: 5095083 (1992-03-01), Baldridge

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