US PATENT SUBCLASS 81 / 460
.~.~ Inserted portion having plural, noncollinear blades (e.g., Phillips)

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
436  DF  .~ Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver) {10}
460.~.~ Inserted portion having plural, noncollinear blades (e.g., Phillips)

DEFINITION

Classification: 81/460

Inserted portion having plural, noncollinear blades (e.g., Phillips):

(under subclass 436) Work-engaging and strain-exerting portions having a periphery which includes two or more noncollinear blades (i.e., long, thin projections) which are intended to cooperate with the contour of the cavity.