The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2012
Filed:
Jan. 25, 2007
Esben Grønborg Brun, Ålborg, DK;
Søren Hansen, Århus C, DK;
Per Höjsgaard Andreasen, Randers, DK;
Helge Grann, Bjerringbro, DK;
Esben Grønborg Brun, Ålborg, DK;
Søren Hansen, Århus C, DK;
Per Höjsgaard Andreasen, Randers, DK;
Helge Grann, Bjerringbro, DK;
Grundfos Management a/s, Bjerringbro, DK;
Abstract
An eccentric screw pump with an annular outer part () and an inner part () arranged therein has an interior of the outer part () and an exterior of the inner part () tapering in a complementary manner towards an axial end (). In the axial direction (X, W), the inner part () and the outer part () are movably received in relation to each other and the inner part () and/or the outer part () are configured in such a manner that pressure applied to the pressure side of the eccentric screw pump generates a force that acts upon the inner part () axially to the direction in which the inner part () tapers and/or a force that acts upon the outer part () in an opposite axial direction.