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US 7,922,469 B2Granted
Pump
AssigneeLuk Fahrzeug-Hydraulik GmbH & Co. KG
InventorIvo Agner
Life of this patent
Estimating the term…
Abstract
A pump, for example, a vane-cell pump or a roll-cell pump, especially a gear pump, includes a two-stroke pump contour which includes at least one rise zone, at least one large circular area, at least one fall zone and at least one small circular area. The pump includes a rotor with radially displaceable vanes or rolls arranged in radial slits inside the pump contour.
Claims11
A pump comprising:
- a double-stroke delivery contour, the delivery contour having at least one rise zone, at least one large circle region, at least one fall zone, and at least one small circle region, and, a rotor within the delivery contour, the rotor having radially displaceable vanes in radial rotor slots,
- an angular range of the large circle region of the delivery contour being lengthened, wherein the large circle region is greater than the fall zone.
Dependencies are inferred from the claim text.