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US 7,726,955 B2Granted
Pump system
AssigneeSensile Pat AG
InventorsPeter Ryser, Sigfrid Straessler, Josef Hilber
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Abstract
A pump system having a pump module (10) comprising a stator housing (28) with a chamber (30), a rotor (32) rotatably and axially slidably received in the chamber and comprising a first axial extension (46) with a liquid supply channel (50) and a second axial extension with a liquid supply channel (52), the first and second axial extensions having different diameters, and first and second sealing rings (54, 56), mounted around the first and second axial extensions.
Claims17
A pump system for the pumping of a liquid, having a pump module comprising:
- a stator housing with a chamber,
- a rotor rotatably and axially slidably received in the chamber and comprising a first axial extension comprising a liquid supply channel and a second axial extension comprising a liquid supply channel, the first and second axial extensions having different diameters, and
- first and second sealing rings, mounted around the first and second axial extensions,
- said liquid supply channel of each axial extension in conjunction with the corresponding sealing ring forming a valve that opens an closes as a function of the angular and axial displacement of the rotor.
1 more element
Dependencies are inferred from the claim text.