Direct drive servovalve having magnetically loaded bearing

Details Direct drive servovalve having magnetically loaded bearing Direct drive servovalve having magnetically loaded bearing

1994-01-27

1996-04-16

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 85, 310 90, 310191, H02K 2112

Patent

active

055085750

ABSTRACT:
A direct drive servovalve wherein a limited angle force motor is interconnected with a spool valve to convert rotary motion of the drive motor rotor to linear motion of the spool for the control of fluid from a source thereof to a load. The permanent magnets utilized in the rotor of the drive motor are positioned in such a manner that a resultant magnetic force is generated so as to urge the rotor against a bearing which supports the rotor shaft so as to substantially eliminate any radially play or sloppiness in the motor rotor.

REFERENCES:
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patent: 3978355 (1976-08-01), Hofert et al.
patent: 4197474 (1980-04-01), Honigsbaum
patent: 4339737 (1982-07-01), Meyers et al.
patent: 4347452 (1982-08-01), Imahashi
patent: 4452423 (1984-06-01), Beblavi et al.
patent: 4578609 (1986-03-01), McCarty
patent: 4702123 (1987-10-01), Hirao et al.
patent: 4793377 (1988-12-01), Haynes

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