US PATENT SUBCLASS 409 / 32
.~.~.~ Crowning

Current as of: June, 1999
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409 /   HD   GEAR CUTTING, MILLING, OR PLANING

1  DF  GEAR CUTTING {11}
10  DF  .~ Gear tooth shape generating {7}
31  DF  .~.~ By relative axial movement between synchronously indexing or rotating work and cutter {2}
32.~.~.~ Crowning

DEFINITION

Classification: 409/32

Crowning:

(under subclass 31) Apparatus or method wherein the formed element is generally ridgelike and is generally higher in the central portion thereof than at the ends.

(1) Note. The height of the ridgelike element is the distance from a base if the product is a rack, is the distance from the axis if the product is a spur gear, is the distance from the vanishing crest cone if the product is a bevel gear, etc.