Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2004-11-16
2009-08-04
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C072S379200
Reexamination Certificate
active
07568272
ABSTRACT:
In a press-forming method, a plurality of plates are prepared and end faces of the plurality of plates are butt joined to obtain a blank having joined portions. The blank has deformed-shape sections formed in a vicinity of the joined portion so as to deform in a direction along which peripheral lengths of the deformed-shape sections are stretched. Press-forming, involving stretch-flange formation, is carried out on the blank so as to allow the joined portions to be included in stretching regions, respectively. Also, the stretch-flange formation is carried out on the blank while restraining ends of the joined portion of the blank.
REFERENCES:
patent: 3156034 (1964-11-01), Gruetjen
patent: 3499308 (1970-03-01), Ford
patent: 5487219 (1996-01-01), Ruehl et al.
patent: 5735163 (1998-04-01), Sato et al.
patent: 0 534 704 (1993-03-01), None
patent: 883022 (1961-11-01), None
patent: 6-218440 (1994-08-01), None
patent: 7-290182 (1995-11-01), None
patent: 10-180470 (1998-07-01), None
patent: 11-104750 (1999-04-01), None
patent: 2000-071022 (2000-03-01), None
patent: 2000-071022 (2000-03-01), None
patent: 2003-19516 (2003-01-01), None
Kawauchi Noriaki
Morita Tsukasa
Satou Akihiko
Seki Toshihiro
Bryant David P
Foley & Lardner LLP
Koehler Christopher M
Nissan Motor Co,. Ltd.
LandOfFree
Press-forming method, press-forming machine and press-formed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Press-forming method, press-forming machine and press-formed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Press-forming method, press-forming machine and press-formed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4065364