Sealing arrangement for gear-type fluid displacing machines

Details Sealing arrangement for gear-type fluid displacing machines Sealing arrangement for gear-type fluid displacing machines

1975-12-31

1977-06-14

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

277 95, F01C 1908, F03C 300, F16J 1514

Patent

active

040294463

ABSTRACT:
A gear-type fluid displacing machine includes a housing having a chamber and two side sections overlying opposite ends of the chamber, a pair of mating gears in the chamber for generating a high pressure area therein as the gears rotate, and annular bearing members surrounding trunnions associated with the gears at opposite ends of the chamber each of the bearing members having an end which faces one of the side sections of the housing and being formed with a groove. The sealing arrangement includes a generally U-shaped resilient sealing element in each of the grooves and having an open side in communication with the high pressure area. The sealing element has at least one wedge-shaped leg which is pressed into sealing contact with an associated side section by its own resilience and by the force exerted by the pressure fluid entering the open side of the element from the high pressure area.

REFERENCES:
patent: 2415888 (1947-02-01), Joy
patent: 2684033 (1954-07-01), Montgomery et al.
patent: 2808785 (1957-10-01), Hilton
patent: 3142260 (1964-07-01), Oliver
patent: 3228342 (1966-01-01), Page
patent: 3348492 (1967-10-01), Olson et al.
patent: 3891360 (1975-06-01), Dworak
patent: 3909165 (1975-09-01), Laumont

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