Combined seal biasing spring and check valve for rotary mechanis

Details Combined seal biasing spring and check valve for rotary mechanis Combined seal biasing spring and check valve for rotary mechanis

1976-03-12

1978-02-07

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Valve regulated non-working fluid

418 94, 418122, F01C 1904, F01C 2104, F04C 2700, F04C 2902

Patent

active

040724492

ABSTRACT:
A rotary mechanism including a housing defining an operating chamber, a rotor journalled within the chamber, at least one seal receiving groove in the rotor, a seal within the groove, a spring within the groove and urging the seal into sealing engagement with the housing, a source of oil under pressure, and an oil conduit in fluid communication with the source and ending in an opening in the groove beneath the spring and positioned to be closed by the spring so that the spring additionally serves as a check valve opening to permit oil to enter the groove when oil under pressure is directed to the conduit and prevents pressurized gas from entering the conduit from the chamber.

REFERENCES:
patent: 3130683 (1964-04-01), Paschke et al.
patent: 3261334 (1966-07-01), Paschke
patent: 3343526 (1967-09-01), Peras
patent: 3881848 (1975-05-01), Huf
patent: 3923434 (1975-12-01), Walters
patent: 3999905 (1976-12-01), Goloff et al.

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