Magnetically actuated rising stem valve

Details Magnetically actuated rising stem valve Magnetically actuated rising stem valve

1979-05-17

1981-06-23

Rosenthal, Arnold

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

251133, 251 65, 403DIG1, 13763015, F16K 3110

Patent

active

042744440

ABSTRACT:
This invention relates to a rising stem valve that is magnetically actuated. A driven magnet assembly is rotatably supported in a nonmagnetic pressurizable bonnet fixed to the main valve body. The driven magnet assembly preferably comprises rare earth cobalt magnets defining an even number of north and south poles. A cylindrical holder coaxial with and surrounding said tubular bonnet is rotatably secured thereto. The holder carries driving magnets, preferably rare earth cobalt magnets with an even number of north and south poles. Rotation of the holder results in rotation of the driven magnet assembly. A valve stem is connected to the driven magnet assembly in a manner such that turning of the driven magnet assembly raises and lowers the stem which in turn opens and closes the valve.

REFERENCES:
patent: 2289574 (1942-07-01), Carlson
patent: 2589188 (1952-03-01), De Craene et al.
patent: 3355140 (1967-11-01), Andersen
patent: 3908959 (1975-09-01), Fichtner
patent: 4138617 (1979-02-01), Sudler
patent: 4232695 (1980-11-01), Roberge

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