Spot welding electrode and method for welding coated metals therewith

  • US 5,349,153 A
  • Filed: 09/28/1992
  • Issued: 09/20/1994
  • Est. Priority Date: 09/28/1992
  • Status: Expired due to Term
First Claim
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1. A spot welding electrode comprising:

  • (a) a housing having an open end and a closed end the housing having a cavity formed therein partially extending from the open end toward the closed end;

    (b) a mounting portion for mounting to an electrode adaptor, the mounting portion being disposed proximate the open end of the housing;

    (c) a tip portion, the tip portion being integral with the mounting portion and being disposed proximate the closed end of the housing, the tip portion having a cooling wall and an integral end wall surrounding and defining the cavity within the tip portion, the tip portion having an outer surface and an inner surface, the inner surface being substantially parallel to the outer surface; and

    wherein the cavity, the cooling wall, the end wall and the parallel surfaces of the tip portion cooperate to define a non-alloying contact surface.

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