US PATENT SUBCLASS 57 / 103
.~.~.~ Friction

Current as of: June, 1999
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57 /   HD   TEXTILES: SPINNING, TWISTING, AND TWINING

1 R  DF  APPARATUS AND PROCESSES {45}
92  DF  .~ Driving {6}
102  DF  .~.~ Gear {1}
103.~.~.~ Friction

DEFINITION

Classification: 57/103

(under subclass 102) Driving devices in which friction gear wheels are used.

SEE OR SEARCH CLASS

476, Friction Gear Transmission Systems or Components, for friction gearing, per se.