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:
Dec. 15, 2015
Filed:
May. 24, 2012
Theodor Hüser, Geseke, DE;
Alexander Rüther, Olsberg, DE;
Udo Schubert, Paderborn, DE;
HELLA KGAA HUECK & CO., Lippstadt, DE;
Abstract
A vane pump includes an electric drive unit with an electric motor and a motor shaft, a pump chamber attached on the electric drive unit, and a rotor having a plurality of blades. The rotor is arranged concentrically to the motor shaft within the pump chamber, and the motor shaft is engaged with the rotor by way of a tappet which is connected torsionally rigid with the motor shaft. The tappet has at least one tappet peg, which is engaged in a rotor recess, that corresponds to the tappet peg, wherein the at least one rotor recess has an oval shape, and the tappet peg is contoured in such a way that two first slightly curved contoured sections each form one contact area with one oblong planar section corresponding with one each of the rotor recesses.