Joining sheet metal

Details Joining sheet metal Joining sheet metal

1983-05-17

1984-07-17

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29522A, 2924353, 292835, 403274, B21D 3900, B23P 1100

Patent

active

044597355

ABSTRACT:
There is disclosed an improved apparatus for joining a plurality of pieces of sheet metal by first drawing and then laterally extruding the material to be joined into an enlarged shape which will permanently mechanically interlock the pieces. The apparatus utilizes a novel die construction in which portions thereof pivot laterally in response to lateral extrusion of the joining material, and is applicable to conventional "lanced" type joints as well as to a novel leakproof joint which is also disclosed. A method of forming a leakproof joint between a plurality of pieces of sheet metal is also disclosed.

REFERENCES:
patent: 1969214 (1934-08-01), Dit Daude
patent: 2619855 (1952-12-01), Williams
patent: 2671361 (1954-03-01), Sandberg
patent: 2924312 (1960-02-01), Williams
patent: 3338463 (1967-08-01), Henrickson
patent: 3357388 (1967-12-01), Dunn
patent: 3451367 (1969-06-01), Henrikson
patent: 3579809 (1971-05-01), Wolf
patent: 3771216 (1973-11-01), Johnson
patent: 4208776 (1980-06-01), Schleicher

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