Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1993-02-01
1994-10-25
Rosenbaum, Mark
Metal working
Method of mechanical manufacture
Assembling or joining
29514, 29521, 295251, 723794, 413 73, B21D 5106
Patent
active
053576675
ABSTRACT:
A process for producing sheet-metal jackets, especially for pallet containers with an inner container of a synthetic resin, wherein a rectangular cut-to-size sheet-metal blank, the narrow sides of which are folded over into rims, is bent into a tubular member (15), and the rims (11a, 12a) of the tubular member (15) are hooked together. From the interlocked rims (11a, 12a), a series of spaced-apart connecting straps (16) is shaped by cutting and embossing toward the outside in a series parallel to the rims (11a, 12a) while leaving undeformed the rims between the spaced-apart portions. The rims (11a, 12a) are locked with respect to each other by a wire (17) pulled through the connecting straps (16), and the thusproduced tubular member (15) is shaped on a stretching press into a sheet-metal jacket.
REFERENCES:
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patent: 3728779 (1973-04-01), Behlen et al.
patent: 3728881 (1973-04-01), Coop
patent: 3734042 (1973-05-01), Heniser et al.
patent: 3759203 (1973-09-01), Frankenberg
patent: 4534092 (1985-08-01), Tracy
Strasser, F., "Sheet Metal Seams", Machine Design, Sep. 9, 1976, pp. 137, 138.
Hughes S. Thomas
Rosenbaum Mark
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