Servovalve apparatus

Details Servovalve apparatus Servovalve apparatus

1982-02-18

1984-08-14

Garrett, Robert E.

Motors: expansible chamber type

With motive fluid valve

Electrically operated

13762565, F15B 13044

Patent

active

044649789

ABSTRACT:
A servovalve apparatus comprising a servovalve and a force motor operatively connected to a valve element of the servovalve for driving the valve element. The force motor includes an annular magnet, and first and second members cooperating with each other to define therebetween an annular gap concentric with the annular magnet. A cylindrical coil operatively connected to the valve element is disposed in the annular gap in concentric relation therewith and is reciprocated within the annular gap in response to the electric current passing through the coil. First and second cylindrical resilient members thermally connect one and the other axial ends of the cylindrical coil to first and second stoppers, respectively, to transmit the Joule heat generated by the coil to the first and second stoppers.

REFERENCES:
patent: 3126031 (1964-03-01), Hayner
patent: 3516441 (1970-06-01), McCormick

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