US PATENT SUBCLASS 338 / 103
.~.~.~ With electromagnetic operator (e.g., electric motor)

Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
99  DF  .~ Surfaces pressed together (e.g., compressible type) {2}
101  DF  .~.~ Pile type {9}
103.~.~.~ With electromagnetic operator (e.g., electric motor) {3}
104  DF  .~.~.~.~> Force applied at both ends of pile
105  DF  .~.~.~.~> With diaphragm-type biasing spring
106  DF  .~.~.~.~> With initial pressure adjustment

DEFINITION

Classification: 338/103

(under subclass 101) Subject matter including an electromechanical transducer such as an electric motor or a magnetic relay, the moving part such as the armature of the transducer being mechanically linked with the piles to compress or to release the pressure on the piles upon application of electric energy to the transducer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

116, for mechanically variable resistors generally operated by an electric motor or relay.