US PATENT SUBCLASS 411 / 77
.~.~.~ Double-faced wedge

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

15  DF  HAVING SEPARATE EXPANDER MEANS {13}
75  DF  .~ Relatively sliding wedge surfaces {4}
76  DF  .~.~ Wedge received in transverse slot in holding device or anchor {1}
77.~.~.~ Double-faced wedge

DEFINITION

Classification: 411/77

Double-faced wedge:

(under subclass 76) Subject matter wherein the second member includes a pair of opposed tapered surfaces which mate with surfaces on the holding device or anchor to produce expansion in laterally opposite directions.