US PATENT SUBCLASS 74 / 321
.~.~ Shiftable and/or slidable gears

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

640  DF  GEARING {31}
319  DF  .~ Alternating rotary {3}
321.~.~ Shiftable and/or slidable gears

DEFINITION

Classification: 74/321

(under subclass 319) Gearing, embodying shiftable and/or slidable gears for effecting an alternating rotation of the driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

355, for interchangeably locked, single forward and reverse speed gearing.