US PATENT SUBCLASS 74 / 421 A
.~.~.~ Motor and gearing

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

640  DF  GEARING {31}
412 R  DF  .~ Directly cooperating gears {8}
421 R  DF  .~.~ Spur {1}
421 A.~.~.~ Motor and gearing

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 74/421

(under subclass 412) Gearing, consisting of gears of the spur type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

384, for pivotally supported, spur type, interchangeably locked gearing.

391, for central driving shaft in axle type gearing.

410, for pressure distributing gearing.