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:
Feb. 10, 2004
Filed:
Nov. 28, 2000
Uchiyama Manufacturing Corp., Okayama, JP;
Abstract
A method of manufacturing a magnetic rubber ring comprises: providing an unvulcanized rubber containing rubber materials and magnetic powers; using an extruding machine to extrude the unvulcanized rubber into a rubber band having a nearly round cross section; cutting the rubber band into a strip of rubber band of a predetermined length; forming a rubber band ring by joining opposite ends of the strip of rubber band together, wherein the opposite ends of the strip of rubber band have respective meeting slanted faces cut at a predetermined angle such that a joint of the rubber band ring obtained by joining the opposite ends of the strip of rubber band become thinner in a direction of compression when the rubber band ring is compressed in a direction of its center line; and compressing the rubber band ring under applied heating in the direction of the center line.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile