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:
Apr. 16, 1991
Filed:
Feb. 27, 1989
Applicant:
Inventors:
Katsutoshi Bekki, Aichi, JP;
Kazuo Kondo, Aichi, JP;
Yoshimasa Shibata, Aichi, JP;
Shigeo Niwa, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; A61F / ;
U.S. Cl.
CPC ...
623 18 ; 623 21 ;
Abstract
An artificial joint has a first member mounted on a first bone and a second member mounted on a second member. An angle defined between the first and second members is variable. The first member has a convex curved surface and the second member has a concave curved surface with is in sliding contact with the convex curved surface. A groove is formed in one of the first and second members and a boss inserted into the groove for limiting the sliding movement of the joint in a single plane is formed in the other of the members. Also, an artificial fixed knuckle bone is disclosed.