Gear machine with fluid-biased end face sealing elements

Details Gear machine with fluid-biased end face sealing elements Gear machine with fluid-biased end face sealing elements

1974-12-17

1976-06-08

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

F01C 1908, F03C 300, F04C 1500

Patent

active

039618722

ABSTRACT:
A hydraulic gear machine which may be utilized as a pump or motor has a housing forming a cavity in which a pair of gears having meshing teeth is mounted for rotation. Sealing elements are interposed between the axial ends of the gears and the bearings mounting the gears for rotation; these sealing elements have first surfaces which face the gears and second surfaces facing the bearings and being formed with recesses which form fluid-pressure spaces. At least one seal member is provided adjacent the respective second surfaces and serves to delimit the respective recess. Each seal member has one sealing face which engages an inner circumferential wall of the housing and another sealing face which engages an outer surface of one of the associated sealing element and bearing, which outer surface extends circumferentially of the axis of rotation of the gears.

REFERENCES:
patent: 2695566 (1954-11-01), Compton
patent: 2932254 (1960-04-01), Booth et al.
patent: 3050010 (1962-08-01), Thrap et al.
patent: 3137238 (1964-06-01), Gordon
patent: 3348492 (1967-10-01), Olson et al.
patent: 3395646 (1968-08-01), Gelin
patent: 3473474 (1969-10-01), Martinaglia
patent: 3499390 (1970-03-01), Prijatel

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