US PATENT SUBCLASS 74 / 377
.~.~.~.~.~ Spur 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  .~.~ Slidable keys or clutches {3}
*  DD  .~.~.~ Single clutch shaft {3}
376  DF  .~.~.~.~ Single speed forward and reverse {3}
377.~.~.~.~.~ Spur gears

DEFINITION

Classification: 74/377

(under subclass 376) Transmissions having spur gears in constant mesh, certain of which are rotatable on a shaft and are adapted to be connected to the shaft by manually operated shiftable clutches.