Metal working – Means to assemble or disassemble – Overedge assembling means
Patent
1995-06-07
1996-12-10
Bryant, David P.
Metal working
Means to assemble or disassemble
Overedge assembling means
292835, B21D 3900
Patent
active
055818609
ABSTRACT:
There is disclosed an improved apparatus for joining a plurality of pieces of sheet metal or other sheet material items by first drawing and then laterally extruding portions of the material to be joined into an enlarged shape which will permanently mechanically interlock the sheet material pieces. The apparatus utilizes a novel die construction in which portions thereof are resiliently biased toward one another and pivot and/or slide laterally outwardly in response to lateral extrusion of the joining material, and which is applicable to conventional "lanced" type joints as well as to a novel leakproof joint.
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A Complete Inexpensive Sheet Metal Joining System-BTM Corp. (4 Pages).
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Bryant David P.
BTM Corporation
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