US PATENT SUBCLASS 74 / 837
.~.~ Crank pin drive, shiftable pin

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

828  DF  ALTERNATING-MOTION DRIVEN DEVICE WITH MEANS DURING OPERATION TO ADJUST STROKE {2}
831  DF  .~ Stroke adjustable to zero and/or reversible in phasing {6}
837.~.~ Crank pin drive, shiftable pin

DEFINITION

Classification: 74/837

(under subclass 831) Mechanisms having an off-center pin drive with the position of the pin being adjustable to diminish or reverse the stroke.

SEE OR SEARCH THIS CLASS, SUBCLASS:

600+, for features of adjustable cranks and wrist pins, per se, and see (1) Note to subclass 828.