Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1995-03-13
1996-07-02
Freay, Charles
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 98, 418104, 277178, 277188R, F01L 104
Patent
active
055315780
ABSTRACT:
A large diameter portion of a rotating shaft is supported by an opening in a front housing via a radial bearing. An outer race of the bearing is in contact with an inner, rear surface of the housing as a shoulder portion of the opening. The inner surface is forwardly recessed, so that a small chamber is formed between the housing and the bearing unit. The housing has a stopper projection at a rear end of an opening to which a shaft seal unit is inserted. The projection is axially projected to a faced front surface of the large diameter portion of the shaft, while a seal chamber is formed between the shaft seal unit and the large diameter portion. The seal chamber is in communication with the small chamber. A plurality of circumferentially spaced grooves for holding lubricant are formed at the recessed surface for forming the small chamber.
REFERENCES:
patent: 4340339 (1982-07-01), Hiraga et al.
patent: 4484869 (1984-11-01), Nakayama et al.
patent: 4527963 (1985-07-01), Terauchi
patent: 4538975 (1985-09-01), Tsukagoshi
patent: 4547138 (1985-10-01), Mabe et al.
patent: 4561832 (1985-12-01), Shimizu
patent: 5269661 (1993-12-01), Iizuka et al.
patent: 5419690 (1995-05-01), Goto et al.
Fukanuma Tetsuhiko
Hisanaga Shigeru
Takemoto Tsuyoshi
Watanabe Yasushi
Freay Charles
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Nippondenso Co. Ltd.
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