Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working and working fluids intermix in working chamber
Patent
1975-01-29
1976-03-02
Vrablik, John J.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Non-working and working fluids intermix in working chamber
418142, F04C 2902
Patent
active
039415244
ABSTRACT:
This invention relates to an improvement in a rotary piston machine comprising a jacket and two side parts forming a housing, inlet and outlet means on said housing, a piston patterned after a saddle-free epitrochoid 1:1 mounted in said housing for rotation on an eccentric shaft, annularly-closed axial seals on the sides of the piston in proximity to the piston edge, and a pair of oppositely-positioned radial seals in said housing, the improvement comprising that the axial seal on each side of the piston is composed of two seal means equidistant with respect to each other and being closed within themselves, and lubricant opening means in said side parts in proximity to at least one of said radial seals, said openings being located essentially in the interstice between said two seal means in any position of the piston, or being covered temporarily at least in part by one of said two seal means.
REFERENCES:
patent: 3111820 (1963-11-01), Atchison
patent: 3213837 (1965-10-01), Keylwert
patent: 3814555 (1974-06-01), Casey
Bryan James E.
Dornier System GmbH.
Smith Leonard
Vrablik John J.
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