Rotary expansible chamber devices – Working member has planetary or planetating movement – With relatively movable partition member
Patent
1990-08-20
1992-05-26
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
With relatively movable partition member
418 94, 418142, F04C 18356, F04C 2700, F04C 2902
Patent
active
051162083
ABSTRACT:
A sliding vane rotary pump which includes a housing having disposed therein a cylinder housing, a roller rotatable mounted in a cylindrical opening of the cylinder housing and bearing plates for closing bottom and top ends of the cylindrical opening. The roller includes a cylindrical tube having an internal space wherein each end of the cylindrical tube is provided with a counterbored surface. A seal ring is disposed within the counterbored surface of each end of the cylindrical tube a width of the seal ring extends over the internal space within the cylindrical tube. The internal space is filled with a pressurized fluid supplied by the compressor. The pressurized fluid in the internal space exerts a biasing force on the seal rings to thereby cause the seal rings to move outwardly from the ends of the roller to form a seal with the bearing plates.
REFERENCES:
patent: 751872 (1904-02-01), Roach
patent: 1043697 (1912-11-01), Hayes
patent: 1839638 (1932-01-01), Beals et al.
patent: 2311162 (1943-02-01), DuBois
patent: 4293290 (1981-10-01), Swanson
patent: 4580957 (1986-04-01), Fickelscher et al.
patent: 4722676 (1988-02-01), Sugimoto
patent: 4824343 (1989-04-01), Nakamura et al.
Sundstrand Corporation
Vrablik John J.
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