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:
Sep. 26, 1995
Filed:
Jul. 16, 1993
Applicant:
Inventors:
Tatsuro Miyoshi, Kanagawa, JP;
Shigeki Umezawa, Shizuoka, JP;
Assignee:
NSK - Waner Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ;
U.S. Cl.
CPC ...
1921 / ; 192 7014 ; 106 36 ;
Abstract
A frictional engagement apparatus which is small in size, high in torque, and long in endurance life and includes driven and driving plates. A frictional material is provided on one surface of each of the driven and driving plates, while a ceramic thin film composed of IV.sub.B, V.sub.B, or VI.sub.B family elements, such as titanium, in the periodic table of elements, Si, Al, and carbides, nitrides and oxides thereof, is formed on the other surface. The ceramic thin film includes a ceramic thin film intermediate layer formed on a surface of the respective plate, and a ceramic thin film layer formed on the intermediate layer.