US PATENT SUBCLASS 74 / 351
.~.~.~ Pin or crown gears

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

640  DF  GEARING {31}
325  DF  .~ Interchangeably locked {11}
*  DD  .~.~ Longitudinally slidable {5}
351.~.~.~ Pin or crown gears

DEFINITION

Classification: 74/351

Transmissions under Longitudinally slidable in which pin or crown gears, either single or multiple, are shifted to provide a change of speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

415, for the construction of the pin gear, per se.