Rotary expansible chamber devices – Working member has planetary or planetating movement
Patent
1997-08-13
2000-06-13
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
418220, F04C 200
Patent
active
060741848
ABSTRACT:
A pump utilizing a helical seal comprises a barrel member 4, a cylindrical core member 1 eccentrically arranged in said barrel member 4 and a helical seal 3 arranged between said cylindrical core member 1 and said barrel member 4. As the barrel member 4 and the cylindrical core member 1 are made to revolve relative to each other, the helical fluid path defined by the helical seal, the cylindrical core member 1 and the barrel member changes its capacity and the fluid contained in the barrel member is forced to axially move. Thus, the fluid is subjected not only to the axial force but also to the pressure that increases as the capacity of the helical fluid path formed by the helical seal is reduced by the relative revolution of the cylindrical core member 1 and the barrel member 4.
REFERENCES:
patent: 2358721 (1944-09-01), Ljungdahl
patent: 2764101 (1956-09-01), Rand
patent: 3274944 (1966-09-01), Parsons
patent: 3853434 (1974-12-01), Parsons
patent: 5174737 (1992-12-01), Sakata et al.
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