Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1984-03-07
1985-12-31
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 97, 418142, F01C 104, F01C 2104, F01C 1900
Patent
active
045618321
ABSTRACT:
A scroll-type fluid displacement apparatus with a lubricating mechanism to lubricate between an end plate and an opposed spiral wrap is disclosed. The apparatus has a pair of scrolls, each of which comprises a circular end plate and a spiral wrap extending from one side of the end plate. A groove, in which a seal element is loosely fitted, is formed on the axial end surface of each spiral wrap. One spiral wrap has a second groove at its axial end surface and extends close to the outer terminal end of spiral wrap. The sectional shape of the second groove is different from the sectional shape of the first groove to prevent the movement of the seal element in the first groove. Gas containing lubricating oil is supplied to the outer terminal portion of spiral wrap through the first groove and second grooves.
REFERENCES:
patent: 801182 (1906-10-01), Creux
patent: 3924977 (1975-12-01), McCullough
patent: 3994633 (1976-11-01), Shaffer
patent: 3994635 (1976-11-01), McCullough
patent: 4303379 (1981-12-01), Hiraga et al.
Olds Theodore
Sanden Corporation
Vrablik John J.
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