US PATENT SUBCLASS 451 / 422
.~.~.~ Work actuated

Current as of: June, 1999
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451 /   HD   ABRADING

415  DF  ATTACHMENT {13}
419  DF  .~ To cutting machine to sharpen blade {2}
420  DF  .~.~ Rotary abrading tool {2}
422.~.~.~ Work actuated

DEFINITION

Classification: 451/422

Work actuated:

(under subclass 420) Machine knife sharpening attachment in which the knife is abraded by a tool having only rotary motion and driven by contact with the knife being sharpened.