A - Human Necessities – 47 – B
Patent
A - Human Necessities
47
B
26/182, 312/82.7
A47B 96/20 (2006.01) B23K 9/02 (2006.01) B23K 11/14 (2006.01) F25D 23/06 (2006.01)
Patent
CA 1183891
PROCESS FOR FORMING WELDED PREPAINTED METAL APPLIANCE CABINET WALLS ABSTRACT OF THE DISCLOSURE A process for forming metal walls for prepainted metal cabinets and the like, such as by welding a galvan- ized back panel to a prepainted metal refrigerator-freezer cabinet wrapper painted only on the exterior wall surface thereof, and wherein flange sections functioning as margi- nal edge portions of the wall are folded over from the wrapper side walls. These flange sections are deformed to form recessed inwardly projecting bead portions therein along the edge portions, with paint either removed from the contact surfaces of the interiorly facing bead portions or not present thereon because of the manner in which the flange is formed. A back panel, with projecting bead por- tions arranged along the edges thereof which face exteriorly, is disposed with its edges lapping the flange portions of the wrapper sufficiently to cover bead portions thereon, with the beads in the panel projecting toward and in contact with the oppositely projecting beads of the flange section. A pair of series connected electrodes are then utilized to apply the welding current, one electrode being in contact with the bead surface on the flanges of the wrapper and the other being in contact with the wall of the panel oppo- site a bead portion formed therein.
422264
Ridout & Maybee Llp
Rwc Inc.
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