Method and device for bending a cylindrical tube or the like

Details Method and device for bending a cylindrical tube or the like Method and device for bending a cylindrical tube or the like

2007-05-29

2007-05-29

Larson, Lowell A. (Department: 3725)

Metal deforming

Process

Tube making or reshaping

C072S062000, C072S307000

Reexamination Certificate

active

10485883

ABSTRACT:
The invention concerns methods and devices for bending a cylindrical tube or the like (1) so as to obtain two consecutive sections (2, 3) of said tube forming between them a non-null angle alpha. The method is essentially characterised in that it consists in producing, in the wall (4) of the tube (1), a wave (20) defined between two flanks (22, 23) forming between them a non-null angle beta substantially centred on the separation plane (21) between the two sections, then in producing a permanent plastic deformation of the wave (20) until the value of the angle between the two sections (2, 3) is obtained. The device enables to implement said method. The invention is useful in particular but not exclusively, for producing pipes for transporting fluids in motor vehicles or the like.

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patent: 2 085 346 (1971-12-01), None
patent: 200 723 (1923-07-01), None

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