Valves and valve actuation – Mechanical movement actuator – Plural dissimilar mechanical movements
Patent
1981-08-31
1982-09-21
Walton, George L.
Valves and valve actuation
Mechanical movement actuator
Plural dissimilar mechanical movements
74 25, 74 57, 137556, 251163, 251252, 2512495, 251267, F16K 3150, F16K 3152
Patent
active
043503225
ABSTRACT:
A high torque actuator for a plug valve of the type having a body with a central chamber having diametrically opposed inlet and outlet ports and a plug within the chamber having a transverse passage therethrough and an upstanding stem. The plug has a first, upper, valve-open position with its transverse passage in alignment with the inlet and outlet ports of the chamber, and a second, lower valve-closed position wherein its transverse passage is oriented at 90.degree. to the chamber inlet and outlet ports and seal means on the plug are in sealing engagement with the chamber walls about the inlet and outlet ports. Drive cam means are introduced between a coupling and the valve stem in order to increase torque output of inclined cam slots without changing or increasing the height of the valve body and plug.
REFERENCES:
patent: 2412529 (1946-12-01), Mueller
patent: 2964961 (1960-12-01), Gulick
patent: 3046802 (1962-07-01), Cupedo
patent: 3370827 (1968-02-01), Stehlin
patent: 3396938 (1968-08-01), Matsui
patent: 3417960 (1968-12-01), Stehlin
patent: 3492880 (1970-02-01), Pearson
patent: 3606801 (1971-09-01), Williams
patent: 3793893 (1974-02-01), Heiner
patent: 4120479 (1978-10-01), Thompson et al.
Grove Truseal Valve Company
Walton George L.
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