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:
Aug. 16, 1994
Filed:
Jun. 19, 1992
Applicant:
Inventors:
Osamu Kawamura, Tochigi, JP;
Shigeo Murata, Sagamihara, JP;
Assignees:
Nippon Piston Ring Co., Ltd., , JP;
Nissan Motor Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ;
U.S. Cl.
CPC ...
1921 / ; 428614 ; 428674 ; 192 / ;
Abstract
A synchronizer ring for performing synchronous sliding operation with and separating operation from a rotating object member, comprises a ring body having a sliding surface slidable in contact with the object member and a copper alloy flame-coated film formed on the sliding surface. The copper alloy flame-coated film has a Zn equivalent of 40 to 65, a surface porosity of 5 to 30 volume % and a thickness of 70 to 200 .mu.m. The copper alloy flame-coated film also may have a surface roughness (Rz) of 20 to 60 .mu.m, and a ceramic content of 5 to 30 weight %.