US PATENT SUBCLASS 104 / 210
.~.~.~.~ Screw operated

Current as of: June, 1999
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104 /   HD   RAILWAYS

165  DF  TRACTION {8}
173.1  DF  .~ Cable {22}
202  DF  .~.~ Grippers {19}
204  DF  .~.~.~ Automatic grip control {7}
210.~.~.~.~ Screw operated

DEFINITION

Classification: 104/210

(under subclass 204) Devices in which trip-controlled gripping-jaws are actuated by a screw or helical cam.