Rotary expansible chamber devices – Positively actuated vane
Patent
1995-12-26
1999-03-02
Freay, Charles G.
Rotary expansible chamber devices
Positively actuated vane
418266, F01C 100, F03C 200
Patent
active
058761942
ABSTRACT:
A fixed displacement vane-type hydraulic machine that includes a cartridge assembly having a rotor, a plurality of vanes carried by the rotor, side plates on opposed sides of the rotor, and a cam ring carried between the side plates surrounding the vanes and rotor to define fluid chambers between the vanes. A housing surrounds and encloses the cartridge assembly, and provides inlet and outlet passages for feeding fluid to and from the chambers. A shaft is coupled to the rotor and extends from the housing. A cam pin extends radially between the cam ring and the housing surrounding the cam ring for preventing rotation of the cam ring with respect to the housing so as to absorb reaction torque on the cam ring with respect to the housing due to pressure applied to the machine. In the preferred embodiment of the invention, the cam pin is affixed to the cam ring, and is slidably received within an axial pocket in the surrounding housing during assembly of the cartridge to the housing. The axial pocket may include either a portion of the fluid flow path that extends through the housing, or a pocket specially formed in the housing for receiving the cam pin.
REFERENCES:
patent: 2312886 (1943-03-01), Ellinwood
patent: 3204565 (1965-09-01), Kirkpatrick
patent: 3255705 (1966-06-01), Eickmann
patent: 3479962 (1969-11-01), Pettibone
patent: 5431552 (1995-07-01), Schuller et al.
Freay Charles G.
Vickers, Inc.
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