US PATENT SUBCLASS 451 / 231
.~.~.~ Stationary work holder

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
177  DF  .~ Rotary tool {3}
178  DF  .~.~ Rotary cylinder {11}
231.~.~.~ Stationary work holder {4}
232  DF  .~.~.~.~> Reversing, obverting, or pivoting
233  DF  .~.~.~.~> Spaced portions
234  DF  .~.~.~.~> Blade sharpener
235  DF  .~.~.~.~> Harvester knife

DEFINITION

Classification: 451/231

Stationary work holder:

(under subclass 178) Abrading machine in which the workpiece is supported by a member which does not move during the abrading.

(1) Note. The work position may be changed before or after abrading engagement.