US PATENT SUBCLASS 74 / 374
.~.~.~.~.~ Multiple key

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}
373  DF  .~.~.~.~ Selective {1}
374.~.~.~.~.~ Multiple key {1}
375  DF  .~.~.~.~.~.~> Spur gears

DEFINITION

Classification: 74/374

(under subclass 373) Transmissions, but provided with constantly meshed gears, some of which are loosely mounted on the same shaft and wherein manually operable keys are provided for connecting a selected one of the gears to its shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

362, for progressive, multiple key, single clutch shaft, slidable key or clutch type interchangeably locked gearing.