Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1980-04-24
1982-04-06
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
74346, 74350, 175218, 2512495, F16K 31122, F16K 3153
Patent
active
043232213
ABSTRACT:
An actuator for a valve, said valve including a cylindrical valve body having a valve member disposed therein with a first gear attached to said valve member. A second gear is provided for drivingly engaging said first gear to operate said valve member. A support member is adapted to be attached to the valve body, and a first frame is rotatingly connected to the support member so that the valve body may rotate relative to said first frame. A hydraulic cylinder is connected between said first frame and a second frame. The second gear is rotatingly mounted upon the second frame. The hydraulic cylinder selectively moves said second gear into and out of engagement with said first gear. A locking apparatus is provided for selectively locking the first frame to the support member means to prevent the first frame from rotating relative to the valve body when the locking apparatus is in the locked position. The locking apparatus includes a coil compression spring for biasing the locking apparatus toward an unlocked position.
REFERENCES:
patent: 1784094 (1930-12-01), Fletcher
patent: 2251633 (1941-08-01), Parish
patent: 2346681 (1944-04-01), Harper
patent: 2357952 (1944-09-01), Hoelscher
patent: 3034371 (1962-05-01), Cantalupo et al.
patent: 3806082 (1974-04-01), Kellner
patent: 3941348 (1976-03-01), Mott
patent: 4082247 (1978-04-01), Dalton
"Oil Field Power Tools", International Tool Company, Inc. pp. 1-7, Model A-6B-Kelly Spinner.
Kelly Thomas
Krober Hubert D.
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