Method and apparatus for forming a non-circular pipe

Details Method and apparatus for forming a non-circular pipe Method and apparatus for forming a non-circular pipe

1997-05-22

1998-04-07

Jones, David

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

72 58, 294211, B21D 2602

Patent

active

057351562

ABSTRACT:
A method of forming a non-circular pipe having a different sectional shape in the longitudinal direction thereof by bending a raw pipe while applying pressure to the inside of the raw pipe, wherein the circumference of a section of the raw pipe is substantially equalized to the circumference of a section, corresponding to the section of the raw pipe, of the non-circular pipe after formed.

REFERENCES:
patent: 1984002 (1934-12-01), Ward
patent: 5445001 (1995-08-01), Snavely
Japanese Patent Unexamined Publication No. 55-77934 Date Jun. 1980.
Japanese Patent Uenxamined Publication No. 55-55819 Date Apr. 1980.

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