US PATENT SUBCLASS 338 / 91
.~.~ With mechanical converter

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

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
89  DF  .~ Mathematical function (e.g., sine-cosine potentiometer) {2}
91.~.~ With mechanical converter

DEFINITION

Classification: 338/91

(under subclass 89) Subject matter including a mechanical linkage in or an arrangement of the resistor actuator producing some peculiar operating characteristic to contribute to the mathematical relationship.

(1) Note. Examples of subject matter present here include a cam and follower linkage or an eccentric mounted contact movable over an annular resistance element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

116, for electric motor driven resistors.

SEE OR SEARCH CLASS

363, Electric Power Conversion Systems,

140, for impedance type converters.