B - Operations – Transporting – 30 – B
Patent
B - Operations, Transporting
30
B
B30B 15/02 (2006.01) B21D 39/03 (2006.01)
Patent
CA 2172215
A fastening apparatus includes a spring operable to inwardly bias a pair of die blades toward an anvil. In one aspect of the present invention, the anvil and die blades act in conjunction with a punch to form either an interlocking lanced joint or a contiguous, leakproof, inverted mushroom-shaped joint. In another aspect of the present invention, the anvil has a flat external face. In yet another aspect of the present invention, the spring includes a pair of spring arms joined by a bridge. In still another aspect of the present invention, the springextends around an external surface of a die body. In a further aspect of the present invention, a discontinuous contact surface of the anvil is provided.
Allison Gregory K.
Sawdon Edwin George
Sawdon Stephen Edward
Btm Corporation
Smart & Biggar
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