Rotary vane pump with floating rotor side plates
AssigneeEaton Corporation
InventorsSteven T. Smart, Charles D. McComas
Life of this patent
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Abstract
A rotary vane pump having a metallic rotor, rotatably positioned within an ellipsoidal cavity, a pair of stationary wear plates on the sides of the cavity, the rotor having a plurality of radial slots each of which contain a carbon composite vane riding against the ellipsoidal cavity in reciprocal motion to define variable volume pumping chambers and a pair of carbon composite rotor side plates each being positioned between one side of the rotor and the stationary wear plates, each of the rotor side plates having a similar pattern of congruent radial slots to that of the rotor, the vanes having sufficient width to extend into the slots of both side plates to drive the side plates with the rotor during operating.
Claims8
A rotary vane pump comprising:
- a body having an ellipsoidal cavity with intake and discharge ports therein;
- a pair of stationary wear plates mounted on the sides of said cavity;
- a metallic rotor member rotatably mounted and positioned within the cavity having a plurality of radial slots, a plurality of carbon composite vanes positioned in said slots which are urged outwardly by centrifugal force into engagement with said cavity to define variable volume pumping chambers for drawing fluids into the pump through the intake port and discharging them through the discharge port;
- floating rotor side plates made of a carbon composite positioned on opposite sides of the rotor between the two wear plates in sliding relation therewith, the side plates having a congruent pattern of radial slots with those in the rotor, the vanes having sufficient width to extend into the slots of both side plates to drive the side plates with the rotor.
Dependencies are inferred from the claim text.