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:
Nov. 25, 2003
Filed:
Sep. 19, 2001
Yoshinobu Honkura, Tokai, JP;
Kazuo Arai, Tokai, JP;
Aichi Steel Corporation, Tokai, JP;
Abstract
The present invention is a bar type dental attachment for implants that makes use of magnetic attractive force to secure a denture in place. This bar type dental attachment can rotate corresponding to the movement of the denture during occlusion. The present invention has excellent wear resistance and makes insertion and removal of the denture easy. The present invention has a bar type keeper with an arced attractive face with a constant radius of curvature, and a magnetic assembly that comprises a magnet, a pair of yoke plates sandwiching the magnet, and a seal material made of anticorrosive non-magnetic material that covers the magnet and is hermetically sealed. The attractive surface of the magnetic assembly is curved to fit the keeper.