US PATENT SUBCLASS 451 / 421
.~.~.~ Rotary reciprocating tool

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


451 /   HD   ABRADING

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

DEFINITION

Classification: 451/421

Rotary reciprocating tool:

(under subclass 420) Machine knife sharpening attachment in which the sharpening is done by a grinder having both rotary and reciprocating motion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

119+, and see the notes thereto for other rotary reciprocating tools.

122, 128, 225, 230, 235, 349, and 372+ for other inventions related to sharpening an agricultural blade (e.g., a mower or reaper knife).

SEE OR SEARCH CLASS

30, Cutlery,

139, for a significantly recited cutting implement combined with a rotary blade sharpener.