Balanced rotary valve plate for internal gear device

Details Balanced rotary valve plate for internal gear device Balanced rotary valve plate for internal gear device

1987-08-06

1989-03-21

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

13762521, F01C 1113, F16K 330

Patent

active

048138568

ABSTRACT:
An improved rotary valve plate and internal gear machine wherein an imbalance across the rotary valve plate due to high pressure fluid on the commutator side of the valve plate being opposite low pressure fluid in the variable displacement chambers on the gear side of the valve plate is balanced by a recess which extends around the periphery of the valve plate and receives fluid from the gear side of the valve plate to urge the valve plate toward the commutator. Preferably, the internal gear machine is of a type with an orbiting outer rotor orbiting in an annulus with intermediate pressure fluid in the annulus. The recess on the gear side of the valve plate is disposed to receive intermediate pressure fluid from the annulus.

REFERENCES:
patent: 3743450 (1973-07-01), Woodling
patent: 4232708 (1980-11-01), Miller
patent: 4501536 (1985-02-01), Middlekauff
patent: 4575321 (1986-03-01), Petersen et al.

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