B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 39/00 (2006.01) B23P 19/06 (2006.01) F16B 37/04 (2006.01)
Patent
CA 2067527
A die member for joining a fastener to a panel includes a generally rectangular opening defined by two spaced apart opposed end walls, which receive the end walls of a pilot portion of a fastener. The end walls of the opening terminate into arcuate corners and are adapted to sheer and deform the pilot end walls of the fastener thereby forming bearing panel support abutments capable of providing a liquid tight seal between the panel and the fastener. The die member also includes clinching lips on opposed sides of the die opening. The clinching lips preferably include a top portion and tapered wall which deform the panel edges into grooved openings in the fastener thereby providing a liquid tight seal. The die opening is surrounded by a generally planar surface having an outer generally rectangular perimeter having generally arcuate corners. The generally arcuate corners form arcuate depressions within the panel when the die member operates on the fastener to attach it to the panel. The arcuate depressions resist stress fracturing of the panel when the panel and fastener assembly is subjected to high vibrational environments.
Gowling Lafleur Henderson Llp
Multifastener Corporation
LandOfFree
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