Rotor, a method for producing such rotor and a pump comprising such rotor
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United States of America Patent
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Jan 24, 2012
Grant Date -
Sep 11, 2008
app pub date -
May 8, 2006
filing date -
May 6, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a rotor for a positive displacement rotary pump. The rotor comprises a hub with an aperture and a center axis through aperture and at least 2 lobes radially extending from hub and in a direction essentially perpendicular to the axis of hub. The rotor comprises a core of a first polymer material and a cover of a second polymer material, which second polymer material has a hardness which is lower than the first polymer material. The first and the second polymer materials are connected to each other. The hub or the major part of the hub is preferably provided by the core, whereas at least a part of the lobes is provided by the cover. The invention also relates to a method of providing the rotor and a pump comprising the rotor.
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