US PATENT SUBCLASS 409 / 120
.~.~.~ To make a double curvature foil

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

64  DF  MILLING {29}
79  DF  .~ With regulation of operation by templet, card, or other replaceable information supply {7}
117  DF  .~.~ Including means for operation without manual intervention {4}
120.~.~.~ To make a double curvature foil

DEFINITION

Classification: 409/120

To make a double curvature foil:

(under subclass 117) Apparatus particularly adapted to form an elongated member having an upper formed surface and a lower formed surface wherein provision is made to establish that the curvature of the formed surfaces be related, but different, and not allochiral.

(1) Note. Included herein is formation of an aircraft wing, the propeller for an air or water vessel, or a turbine blade.

SEE OR SEARCH THIS CLASS, SUBCLASS:

95, for apparatus to mill a double curvature foil by duplicating.

119, for apparatus to mill a double curvature foil utilizing plural tracers or plural templets, without duplicating.