Toothing system for a gerotor pump, and method for geometric determination thereof

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United States of America Patent

PATENT NO 11566617
APP PUB NO 20200392956A1
SERIAL NO

16969840

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Abstract

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A toothing for a gerotor pump comprises a plurality of outer teeth (10) at a gerotor inner element (1) and a plurality of inner teeth (20) greater by one at a gerotor outer element (2), wherein a centre (M1) of the gerotor inner element (1) is offset from a centre (M2) of the gerotor outer element (2) by an eccentricity (e), the outer teeth (10) thereby meshing with the inner teeth (20). A contour of the outer teeth (10) at the gerotor inner element (1) is essentially defined by a curve of a single ellipse from a tooth tip (11) continuously via tooth flanks (13) to a transition radius (14) towards a tooth space or a tooth root (12); wherein the principal axis of the ellipse is arranged radially to the gerotor inner element (1) and the centre of the ellipse determines a radius (Rmin) at the gerotor inner element (1) which corresponds to the maximum meshing depth of the gerotor outer element (2) between the outer teeth (10) at the meshing.

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Patent Owner(s)

Patent OwnerAddress
NIDEC GPM GMBHSCHWARZBACHER STRASSE 28 AUENGRUND OT MERBELSROD 98673

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blechschmidt, Andreas Zella-Mehlis, DE 7 30

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