Method and apparatus for bending elongated materials

Details Method and apparatus for bending elongated materials Method and apparatus for bending elongated materials

1978-06-22

1980-04-01

Combs, Ervin M.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 13, 72128, 72306, 72310, 72369, B21D 716, B21D 712

Patent

active

041955064

ABSTRACT:
The disclosure relates to a method of bending elongated materials such as pipe by applying a compressive primary bending force to the material at locations on either end of the portion of the material to be bent and locally stimulating bending of that portion of the material by the application of heat or a secondary bending force. The end portions of the materials are engaged by clamps, each clamp having an arm extending normal to the principle axis of the material. The compressive primary bend force is applied by exerting a force on locations on the arms displaced from the principal axis of the material, which force tends to draw the ends of the arms together.

REFERENCES:
patent: 784101 (1905-03-01), Brinkman
patent: 785083 (1905-03-01), Brinkman
patent: 2286893 (1942-06-01), Boissou
patent: 3958438 (1976-05-01), Somov et al.
patent: 4056960 (1977-11-01), Kawanami
patent: 4061005 (1977-12-01), Kawanami et al.
patent: 4062216 (1977-12-01), Hanamoto et al.
patent: 4098106 (1978-07-01), Yamaguchi
patent: 4122697 (1978-10-01), Hanyo et al.
patent: 4151732 (1979-05-01), Hofstede et al.

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