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United States Patent 6,426,153
Duley ,   et al. July 30, 2002
Tailored blank

Abstract

A tailored blank is provided by welding a pair of constituent parts to one another in juxtaposition. The parts are laser welded together to form a unitary blank that is subsequently formed into a shaped finished component.

Inventors: Duley; Walter (Waterloo, CA); Ogmen; Melih (Ariss, CA); Hughes; David (Toronto, CA)
Assignee: Cosma Powerlasers Limited (Aurora, CA)
Appl. No.: 341575
Filed: October 1, 1999
PCT Filed: November 13, 1997
PCT NO: PCT/CA97/00854
371 Date: October 1, 1999
102(e) Date: October 1, 1999
PCT PUB.NO.: WO98/31485
PCT PUB. Date: July 23, 1998
Foreign Application Priority Data
Jan 14, 1997[GB]9700652

Current U.S. Class: 428/577; 428/582; 428/596; 428/614; 219/121.64; 228/155
Intern'l Class: B32B 001/08; B32B 003/08; B32B 003/10; B23K 026/00; B21D 039/03
Field of Search: 219/121.63,121.64 428/577,578,580,581,583,594,582,614 228/157,155,185

References Cited
U.S. Patent Documents
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4231488Nov., 1980Ward et al.220/288.
4559274Dec., 1985Kloppe et al.428/594.
4603089Jul., 1986Bampton428/594.
4641432Feb., 1987Kume30/383.
4661677Apr., 1987La Rocca219/121.
4695699Sep., 1987Yagii et al.219/121.
5131710Jul., 1992Kamiguchi et al.296/76.
5797187Aug., 1998Leini et al.30/123.
5984163Nov., 1999Meier et al.228/157.
5994666Nov., 1999Buldhaupt et al.219/121.
6048628Nov., 2000Hillmann et al.428/594.
Foreign Patent Documents
42 10 547Jun., 1993DE.
43 07 563Sep., 1993DE.
0276664Aug., 1988EP.
0 327 320Aug., 1989EP.


Other References

English language translation of Ebert, German Offenlegungsschrift "DE 4307563 A1", Sep. 23, 1993, 11 pages.*
Patent Abstracts of Japan, vol. 8, No. 203 (M-326), Sep. 18, 1984 & JP 59 092189 A (Toshiba KK), May 28, 1984.

Primary Examiner: Zimmerman; John J.
Attorney, Agent or Firm: Pillsbury Winthrop LLP
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