Gerotor device with valve compensating means

Details Gerotor device with valve compensating means Gerotor device with valve compensating means

1975-11-10

1977-01-25

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

91433, F01C 102, F01C 2112, F03C 300, F15B 1110

Patent

active

040048667

ABSTRACT:
The invention relates to a gerotor type of rotary piston machine which is operable as either a pump or a motor. In this type of device an externally toothed rotor member is eccentrically offset relative to an internally toothed stator member and in operation these members mesh to form expanding and contracting cells on opposite sides of the line of eccentricity. There is shaft means for driving the rotor and a distributing valve for feeding and exhausting the cells is attached to the shaft means. In order to compensate for torsion stresses in the shaft means which would cause the distributing valve to be slightly out of phase relative to the rotor the connection between the valve and the shaft means is made adjustable in response to sensing means which sense the pressure conditions in the gerotor when the rotor is symmetrical relative to the line of eccentricity. Fluid pressure operated valve and motor means are provided to position the distributing valve relative to the shaft means in accordance with the sensed pressure conditions in the gerotor.

REFERENCES:
patent: 3758242 (1973-09-01), Ohrberg
patent: 3771905 (1973-11-01), Ohrberg et al.
patent: 3841800 (1974-10-01), Ohrberg et al.

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