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:
Mar. 25, 2008
Filed:
Jul. 01, 2004
Satoshi Aizawa, Kodaira, JP;
Takahisa Shizuku, Kodaira, JP;
Masami Kikuchi, Kodaira, JP;
Kenichi Higashi, Yokohama, JP;
Satoshi Aizawa, Kodaira, JP;
Takahisa Shizuku, Kodaira, JP;
Masami Kikuchi, Kodaira, JP;
Kenichi Higashi, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
Methods and devices for measuring elongation, wear, and internal temperature of a conveyor belt to catch signs of conveyor belt failure such as breakage by detecting a magnetic field from a magnetic body by using a magnesium sensor, as well as a rubber magnet sheet as a magnetic body and a method of producing the sheet, the rubber magnet sheet being able to be used while it is embedded in the conveyor belt. To measure elongation of a running conveyor belt (), a magnetic field of a magnetic body () embedded in the belt () is detected by a magnetism sensor () fixed to the earth, and elongation of the belt () is calculated from temporal variation of the detected magnetic field.