Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1994-01-18
1995-01-17
Bertsch, Richard A.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418178, 418179, 428658, F04C 1802
Patent
active
053821440
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.
REFERENCES:
patent: 4407900 (1983-10-01), Kirihara et al.
patent: 5246786 (1993-09-01), Usui
Kato Tohru
Sakamoto Masaaki
Sato Yoshiaki
Tanaka Tadashi
Bertsch Richard A.
Daido Metal Company Ltd.
Freay Charles G.
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