US PATENT SUBCLASS 338 / 104
.~.~.~.~ Force applied at both ends of pile

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}
104.~.~.~.~ Force applied at both ends of pile

DEFINITION

Classification: 338/104

(under subclass 103) Subject matter including two electromagnetic operators each applying a positive compressive or releasing force to a respective end of the pile, or a linkage connected with a single electromagnetic

operator for applying a positive compressive or releasing force to both ends of the pile.

(1) Note. For classification here an actual force must be applied to both ends of the pile. A mere abutment at one end which exerts a holding force in opposition to the force applied at the other end by the relay or motor is not sufficient for classification here, but elsewhere under subclass 103.