Gerotor pump having an inner gear, a rotor, and an outer gear, with inclined lubrication surface on teeth of face wall of rotor adjacent to pressure kidney and suction kidney
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United States of America Patent
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Oct 22, 2019
Grant Date -
Nov 23, 2017
app pub date -
Dec 3, 2015
filing date -
Dec 9, 2014
priority date (Note) -
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Abstract
A gerotor pump includes a rotor wherein only on the face wall of the rotor that lies adjacent to a pressure kidney and a suction kidney, a lubrication surface inclined in the direction of rotation of the rotor, relative to the surface plane of the face wall of the rotor, is disposed on each tooth, in each instance, over its tooth height, either starting directly in the center tooth plane or starting “offset” ahead of the center tooth plane in the direction of rotation of the rotor, which surface is formed from a level surface or multiple, always level partial surfaces that follow one another, which enclose an angle of inclination relative to the surface plane of the face wall of the rotor, in each instance, which angle lies in the range from 0.2° to 7°, in each instance.
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