B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
26/29
B21D 39/03 (2006.01)
Patent
CA 1250735
ABSTRACT OF THE DISCLOSURE A method and apparatus for joining sheet metal pieces employing a male die and a female die wherein within one stroke only one piece is provided with incisions and the material of the other piece is pressed through the area between the incisions and laterally extruded beyond the edges so to form a rivet-type connection.
477092
Eckold Gerd-Jurgen
Maass Hans
Eckold Gerd-Jurgen
Fetherstonhaugh & Co.
Maass Hans
LandOfFree
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