Valves and valve actuation – Fluid actuated or retarded – With adjustable limit stop for actuator
Patent
1992-04-08
1993-03-02
Denion, Thomas E.
Valves and valve actuation
Fluid actuated or retarded
With adjustable limit stop for actuator
251 92, 251112, 251288, 92 132, 92 135, 92 137, 92 138, 92 20, 92 25, 137559, F16K 3112, F16K 3500, F01B 1900, F01B 3114
Patent
active
051902630
ABSTRACT:
A locking mechanism for an actuator prevents the unauthorized operation of the actuator and also permits a viewer to determine whether the actuator is in a locked open, locked closed or unlocked position. The invention utilizes a clear cover guard which is positioned and locked on an actuator body which is attached to a housing. The actuator body comprises threaded bores which permit a bolt to be inserted into the actuator body until it contacts an integral locking cam and driver arm rotatably disposed within the actuator body. The bolt contacts the locking cam in order to selectively lock the integral locking cam and driver arm in a desired position.
REFERENCES:
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patent: 2129499 (1935-10-01), Landon
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patent: 2443036 (1944-05-01), Hopkins
patent: 3397863 (1966-05-01), Bell
patent: 3460800 (1966-08-01), Mikuls
patent: 3537473 (1970-11-01), DeZurik
patent: 3565089 (1971-02-01), Thompson
patent: 3576310 (1971-04-01), Newton
patent: 4140297 (1979-02-01), Bussell
Denion Thomas E.
Neles-Jamesbury, Inc.
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