Force motor

Details Force motor Force motor

1984-04-04

1985-12-24

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335274, H01F 708

Patent

active

045609675

ABSTRACT:
A direct drive valve wherein a force motor (10) controls the position of a valve slide (20) through a linkage (14). The force motor includes a spring assembly (62) having cantilevered springs (68 and 70) that include petals (72). The armature (48) of the force motor is guided by a plurality of balls (84) that contact both an internal tube assembly (47) and the armature.

REFERENCES:
patent: 1293052 (1919-02-01), Dinsmoor
patent: 3022450 (1962-02-01), Chase
patent: 3460081 (1969-08-01), Tillman
patent: 4131866 (1978-12-01), Torr
patent: 4267897 (1981-05-01), Takeshima
patent: 4463332 (1984-07-01), Everett
Application and Use of Rare Earth Magnets, by M. F. Marx, SAE Aerospace Control and Guidance Systems Committee, Meeting No. 41, Palo Alto, Ca.

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