B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 21/00 (2006.01) B25B 23/00 (2006.01) B25B 23/08 (2006.01) B25B 23/10 (2006.01) F16B 23/00 (2006.01) E04D 15/04 (2006.01) F16B 5/01 (2006.01) F16B 25/10 (2006.01)
Patent
CA 2051728
An improved fastener having a non-circular head with a concave recess providing a datum useful in centering the head relative to a non-circular socket of a driving member. The recess may have a frusto-conical wall defining an upper, circular edge or substantially triangular walls defining an upper, non-circular edge. An improved tool useful to drive the improved fastener. In the improved tool, a driving member has a tubular extension with a non-circular socket, and a centering pin is movable axially toward an extended position, in which a convex end of the centering pin fits into the concave recess when the socket is fitted axially over the fastener head. The centering pin is biased toward the extended position.
Dewey George G.
Janusz Michael
Finlayson & Singlehurst
Illinois Tool Works Inc.
LandOfFree
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