Metal deforming – With exposure of work to gas – vapor – mist – or modified...
Patent
1975-08-25
1977-02-22
Gilden, Leon
Metal deforming
With exposure of work to gas, vapor, mist, or modified...
72385, 72463, B21D 1302
Patent
active
040085910
ABSTRACT:
A device for zigzag folding of strip material and the like by means of two dies, the facing sides of which are provided with teeth. Each of the dies is provided with ducts which open into the toothed die face. During operation, the two duct systems are alternately connected to a source of a pressure, either higher or lower than atmospheric pressure, in order to keep the material alternately against one of the two toothed die faces during open die positions.
REFERENCES:
patent: 3172321 (1965-03-01), Schrader
VAN DER Sanden Joannes Theodorus
Van Mensvoort Adrianus Johannes
Vos Leonardus
Gilden Leon
Treacy David R.
Trifari Frank R.
U.S. Philips Corporation
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