Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1984-10-05
1986-06-03
Combs, E. Michael
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
72145, 140 71R, B21F 304, B21F 4500
Patent
active
045922233
ABSTRACT:
Wire forming apparatus has a pair of rotary dies movable together and apart on a rectilinear path. The dies are adapted to hold a length of wire at opposite ends thereof such that on contra-rotation the dies approach each other while deforming said ends into coils.
REFERENCES:
patent: 112868 (1871-03-01), Van Vleck
patent: 484426 (1892-10-01), Hartley
patent: 904563 (1908-11-01), Rau
patent: 3872896 (1975-03-01), Yoshimura
patent: 3993106 (1976-11-01), Yokota
patent: 4471819 (1984-09-01), Nihashi
Combs E. Michael
Silentnight Holdings PLC
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