Valve control mechanism

Details Valve control mechanism Valve control mechanism

1989-09-14

1990-05-22

Fox, John

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

192 38, F16K 2500

Patent

active

049271130

ABSTRACT:
Disclosed is a valve operator which includes a spindle screwed into a sleeve that is seated in a cavity within the housing of the valve operator. The sleeve has a pair of openings therein and the housing has a pair of grooves in its walls. A pair of roller elements, each one seated in a groove and extending through an opening in the sleeve, provide a clutch mechanism. The spindle has recesses which receive the roller elements when the roller elements are aligned therewith. Initial rotation of the spindle within the sleeve causes the sleeve to move linearly until the roller elements are adjacent the recesses, whereupon further rotation of the spindle results in rotation of the sleeve, with the roller elements moving from the groove into the recesses to allow rotation of the sleeve.

REFERENCES:
patent: 1864596 (1932-06-01), Jones
patent: 2076838 (1937-04-01), Heggem
patent: 2795960 (1957-06-01), Heinen et al.
patent: 2889133 (1959-06-01), Blomstran et al.
patent: 3414097 (1968-12-01), Denkowski
patent: 3505888 (1970-04-01), Denkowski

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