Scroll-type fluid apparatus provided with means for counteractin

Details Scroll-type fluid apparatus provided with means for counteractin Scroll-type fluid apparatus provided with means for counteractin

1980-05-15

1983-05-24

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 57, 418 71, 418 72, 418 77, 418 99, F01C 102, F01C 2100

Patent

active

043848311

ABSTRACT:
A scroll-type fluid apparatus including an orbiting scroll member, a stationary scroll member, and a plurality of pockets formed in at least one of the orbiting scroll member and the stationary scroll member to cooperate with the other scroll member for confining liquid therein. When an axially urging force is ecerted on the orbiting scroll member, a liquid pressure commensurate with the axially urging force is produced in the pockets, so that such liquid pressure cancels out a biased axially urging force (moment) exerted on the orbiting scroll member.

REFERENCES:
patent: 3924977 (1975-12-01), McCullough
patent: 3994633 (1976-11-01), Shaffer
patent: 4065279 (1977-12-01), McCullough
patent: 4129405 (1978-12-01), McCullough
patent: 4350479 (1982-09-01), Tojo et al.

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