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.
Patent No.:
Date of Patent:
Aug. 03, 1999
Filed:
Sep. 18, 1997
Applicant:
Inventors:
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26D / ; B26D / ; B26D / ;
U.S. Cl.
CPC ...
83885 ; 83318 ; 83319 ; 83321 ; 74 45 ;
Abstract
A continuously-fed flat tube is cut into sub tubes each having a given length. The flat tube has multiple ports therein. A pair of roller cutters are enabled to follow the flat tube at a zero relative speed between the roller cutters and the flat tube. The roller cutters are moved across portions of the flat tube respectively to cut the flat tube while the roller cutters are enabled to follow the flat tube at the zero relative speed. At least one of the roller cutters enters the flat tube by a depth equal to or greater than a half of a distance between outer flat surfaces of the flat tube while the roller cutters are moved across the portions of the flat tube.