US PATENT SUBCLASS 338 / 105
.~.~.~.~ With diaphragm-type biasing spring

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  DF  .~.~.~ With electromagnetic operator (e.g., electric motor) {3}
105.~.~.~.~ With diaphragm-type biasing spring

DEFINITION

Classification: 338/105

(under subclass 103) Subject matter including a biasing spring usually disc shaped coaxially disposed at an end of the pile between the pile and the electromagnetic operator for exerting a compressive or releasing force on the pile in opposition to the force applied by the electromagnetic operator.

(1) Note. The subject matter here usually includes a relay whose armature acts to compress or release the pile, the diaphragm spring being coaxially disposed between the armature and the pile with its center acting on the pile and supported entirely around the periphery or at, at least three peripheral points.