Metal deforming – By application of fluent medium – or energy field – Using fixed die
Reexamination Certificate
2006-02-01
2008-10-28
Jones, David B (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
Using fixed die
C072S058000, C072S060000, C072S370220
Reexamination Certificate
active
07441432
ABSTRACT:
A production line for the manufacture of a product through hydroforming, having a decoiler (11) for unrolling a steel strip (12) from a coil (13), a roll-forming unit (14) for folding the steel strip into a tube (16), a welding unit (17) for welding together the edges of the steel strip, a hydroforming unit (18) having an openable mold (19, 20) to receive the completed tube as the tube is being formed and welded, a cutting arrangement (24, 25) for cutting off the completed product (23) that has been removed from the hydroforming unit, sealing arrangements (30, 33; 35-39) at two ends of the mold for sealing the tube, and a line (38) for the supply of pressure medium through one of the sealing arrangements for placing the tube under pressure. A method for manufacturing a product in such a line is also provided.
REFERENCES:
patent: 3613423 (1971-10-01), Nakamura
patent: 6000271 (1999-12-01), Olsson et al.
patent: 6502822 (2003-01-01), Brown
patent: 6609301 (2003-08-01), Morris et al.
patent: 7249481 (2007-07-01), Lowe
patent: 7254977 (2007-08-01), Machrowicz et al.
patent: 0027563 (2000-05-01), None
File EPODOC/EPO, Kawasaki Steel Corp: “Welding steel pipe superior in workability and manufacture thereof” JP 2000343135 A, 20001212.
Jones David B
Ortic 3D AB
Stone Mark P.
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