Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1979-04-02
1982-02-23
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
043165966
ABSTRACT:
A power actuated kelly valve includes 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 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 the first frame. A moving apparatus is connected between the first frame and a second frame. The moving apparatus provides apparatus for selectively moving the second gear into and out of engagement with the first gear. A locking device is provided for selectively locking the first frame to the support member to prevent the first frame from rotating relative to the valve body when the locking device is in the locked position. A control apparatus is operatively associated with the moving apparatus and the locking device, for causing the locking device to be moved to the locked position at the same time at which the second gear is in engagement with the first gear. A power drive is attached to the first frame. A third gear is attached to the second gear, said third gear engaging a fourth gear which is attached to the power drive, so that the power drive drives the second and third gears.
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"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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