Fluid control device

Details Fluid control device Fluid control device

1989-07-26

1990-06-05

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

25112914, 251252, F16K 3110

Patent

active

049307460

ABSTRACT:
A modulating valve fluid regulator utilizing a two pole brushless DC motor having the rotor mounted for axial and rotary movement. A poppet is directly carried by the rotor and lifted from the valve seat by a flexible band system which winds upon a mandrel upon rotation of the rotor, or by a cam system having ball bearing cam followers operating on an arcuate cam surface for maximizing torque. Magnetic fields of rotor permanent magnets reacting with the stator core close valve when no electrical power is present to motor.

REFERENCES:
patent: 2496880 (1950-02-01), Leland
patent: 3780980 (1973-12-01), Kallel
patent: 4452423 (1984-06-01), Beblavi et al.
patent: 4723754 (1988-02-01), Torimoto et al.
patent: 4735233 (1988-04-01), Nogami et al.

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