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:
Jul. 10, 2001
Filed:
Jun. 06, 2000
Applicant:
Inventor:
Daisuke Fujikura, Minami-Ashigara, JP;
Assignee:
Fujii Photo Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
B65H 2/332 ; B65H 4/308 ;
U.S. Cl.
CPC ...
B65H 2/332 ; B65H 4/308 ;
Abstract
A tension determining apparatus that is arranged above cylindrical air chambers determines tensions at both edges of a web before the web enters helical routes of the cylindrical air chambers. Middle direction changing air chambers among three direction changing air chambers arranged in a row are inclined by a predetermined angle according to the difference between the tensions at both edges of the web. Therefore, a snaking and a bias of the web are reduced, and the web can run stably.