US PATENT SUBCLASS 74 / 424.6
.~.~.~ Driven rack or shaft

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}
424.5  DF  .~.~ Spiral {4}
424.6.~.~.~ Driven rack or shaft

DEFINITION

Classification: 74/424.6

(under subclass 424.5) Spiral gearing, in which the driven element is a rack or chain.