Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1991-10-15
1993-08-24
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
251 62, 251144, 251230, 7336177, 74128, F16K 3700
Patent
active
052380220
ABSTRACT:
An actuator system for controllably rotating a rotary (valve) element positioned in a pressurized fluid vessel. A double-acting piston-cylinder intermittently rotates a ratchet wheel operatively connected to the rotary element. The cylinder is sealed within a bellows chamber assembly in the vessel and is controllable by a pressure source positioned outside of the vessel. The wheel is rotated by a ratchet member biased against the ratchet wheel and attached to the cylinder and reciprocable therewith. A ratchet pawl biased against the ratchet wheel prevents the reverse rotation of the wheel, and thereby of the rotary element.
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Chambers A. Michael
Montana Sulphur & Chemical Co.
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