US PATENT SUBCLASS 451 / 218
.~.~.~.~.~ Work rotating

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}
212  DF  .~.~.~ Reciprocating work holder {4}
213  DF  .~.~.~.~ Rectilinear {6}
218.~.~.~.~.~ Work rotating {4}
219  DF  .~.~.~.~.~.~> Gear forming
220  DF  .~.~.~.~.~.~> Long helix
221  DF  .~.~.~.~.~.~> Rotary work holder
222  DF  .~.~.~.~.~.~> Thread abrader {1}

DEFINITION

Classification: 451/218

Work rotating:

(under subclass 213) Abrading machine in which the workpiece is turned about an axis while being reciprocated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

134, 140, 189, 209+, 227+, 242+, 268+, 283+, 306, 307+, 317+, 394, and 397+, for other work rotating.

274, and 306, for other combined work rotating and reciprocating.

SEE OR SEARCH CLASS

409, Gear Cutting, Milling, or Planing,

65+, for thread or helix generating.