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:
Jan. 17, 1995
Filed:
Jan. 18, 1994
Applicant:
Inventors:
Tadashi Tanaka, Konan, JP;
Masaaki Sakamoto, Nagoya, JP;
Tohru Kato, Seto, JP;
Yoshiaki Sato, Gifu, JP;
Assignee:
Daido Metal Company Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
418 553 ; 418178 ; 418179 ; 428658 ;
Abstract
Wear resistance, seizure resistance, durability and corrosion resistance of an Oldham ring made of an aluminum alloy engaging with a swivel scroll made of an aluminum alloy are improved. The Oldham ring comprises a substrate made of an Al--Si alloy which has a light weight and a high strength, a bond layer of a multiplex zinc base alloy containing Cu and Ni as a primary plating layer which is formed on the substrate, and an electroless Ni--P plating layer having a hardness of MHV550 which is formed on the outermost surface of the Oldham ring.