US PATENT SUBCLASS 451 / 219
.~.~.~.~.~.~ Gear forming

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  DF  .~.~.~.~.~ Work rotating {4}
219.~.~.~.~.~.~ Gear forming

DEFINITION

Classification: 451/219

Gear forming:

(under subclass 218) Abrading machine which grinds a workpiece to form a gear.

(1) Note. Hobbing by use of an abrading tool is included herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

147+, 253, and 275, for other gear grinders with a reciprocating or rotating work holder.

SEE OR SEARCH CLASS

409, Gear Cutting, Milling, or Planing,

65+, for thread or helix generating.