The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 21, 1995

Filed:

Nov. 22, 1993
Applicant:
Inventors:

Yoshitaka Kuroda, Anjo, JP;

Takao Ikeda, Okazaki, JP;

Kazutoshi Yamamoto, Matsumoto, JP;

Tamotsu Inoue, Nagoya, JP;

Assignee:

Nippondenso Co., Ltd., Kariya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B21D / ; B21D / ;
U.S. Cl.
CPC ...
72 16 ; 72334 ; 29890052 ;
Abstract

A method for manufacturing long products from a lengthy plate-like material having an appreciably small thickness by press working is disclosed in which the plate-like material is fed in succession into the press working stages of a single press unit carrying out a centering process, a bending process, a coining process, a sizing process, perforating process, and a final shearing process. The material having passed these press working processes is formed into long products having various required lengths and various required number of perforations formed therein. The spacing of the perforations are kept constant irrespective of changes in the thickness and width of the material.


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