B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/90
B23K 11/10 (2006.01) B23K 11/30 (2006.01)
Patent
CA 1105571
C-2793 D-803 NON-MARRING SPOT WELD TIP Abstract of the Disclosure To prevent buckling and indentation of a panel being spot welded, a welding tip including an electrode of large load bearing and heat conducting surface is used to spread the load and also efficiently cool the workpiece. The large area elec- trode is a water cooled copper disk of large mass connected to a support arm by a coil spring. An electrical contactor on the support arm releasably engages the electrode to supply welding current thereto when welding pressure is applied to the workpiece by the welding gun. When the pressure is removed, the coil spring separates the electrode from the contactor.
295661
Bakewicz Frank J.
Bouchard Patrick M.
Pringle Patrick W.
General Motors Corporation
Gowling Lafleur Henderson Llp
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