US PATENT SUBCLASS 409 / 169
.~.~ Including friction gearing drive


Current as of: June, 1999
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409 /   HD   GEAR CUTTING, MILLING, OR PLANING

64  DF  MILLING {29}
145  DF  .~ Including means to infeed work to cutter {10}
169.~.~ Including friction gearing drive


DEFINITION

Classification: 409/169

Including friction gearing drive:

(under subclass 145) Apparatus wherein the means to cause the workpiece to move toward the cutting tool during the shaping stroke includes a rotary driving member having a generally smooth circular or annular surface and a rotary driven member having a generally smooth circular or annular surface adapted to rollingly engage the corresponding surface of the driving

member, whereby moving force is transmitted to the workpiece.