US PATENT SUBCLASS 411 / 404
.~.~.~ Orthogonally arranged slots, e.g., Phillips head, etc.

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

378  DF  EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. {16}
402  DF  .~ Head driving structure {4}
403  DF  .~.~ Socket or slot {4}
404.~.~.~ Orthogonally arranged slots, e.g., Phillips head, etc.

DEFINITION

Classification: 411/404

Orthogonally arranged slots, e.g., phillips head, etc.:

(under subclass 403) Subject matter provided with a plurality of slots, two of which intersect at a right angle.

SEE OR SEARCH CLASS

81, Tools,

460, for wrenches having plural, noncollinear blades designed for insertion into a cavity.