Electric heating – Metal heating – For bonding with pressure
Reexamination Certificate
2007-08-07
2007-08-07
Kerns, Kevin P. (Department: 1725)
Electric heating
Metal heating
For bonding with pressure
C219S086100, C219S087000, C219S059100, C296S210000
Reexamination Certificate
active
10662841
ABSTRACT:
Method of welding a metal sheet and metal tubing as well as a welded sheet-to-tube welded structure wherein the tube-to-sheet gage ratio may be reduced to permit use of metal tubing having a reduced wall thickness. One or more intermediate metal bridging members is/are first welded to a metal tube using a relatively rapid welding process that reduces heat input and residual tensile stress imparted to the tube. A metallic sheet then is spot welded directly to the one or more bridging members, rather than to the metallic tube, to form a welded sheet-to-tube structure.
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Schmidt Kenneth R.
Wang Pei-Chung
General Motors Corporation
Kerns Kevin P.
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