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:
Dec. 16, 2003
Filed:
Sep. 08, 2000
Carl Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A rectangular opening/closing bar is formed, which is inserted in the curl ring of the ring binder to bind papers. The tip end of the opening/closing bar A is provided with an instruction portion to raise and open ring pieces in turn while inserting the opening/closing bar A. Further, the opening/closing bar may have swollen portions on both ends of the opening/closing bar A to enable the bar slide smoothly in the curl ring. And it may be provided with a guide plate D perpendicular to the side wall of the opening/closing bar A of the swollen portions side. In order to enhance the workability of the opening/closing bar, it may be preferable to use an auxiliary device for positioning the ring binder.