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:
Sep. 19, 2017
Filed:
Sep. 08, 2014
Hella Kgaa Hueck & Co., Lippstadt, DE;
Ingo Geue, Bad Sassendorf, DE;
Theodor Hüser, Geseke, DE;
Dennis Marburg, Lippstadt, DE;
Udo Schubert, Paderborn, DE;
Thomas Valeiras, Lippstadt, DE;
Hella KGaA Hueck & Co., Lippstadt, DE;
Abstract
A vane pump with a pump housing in which a cam ring is constructed or arranged, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis , wherein the cam ring has an inner contour with a variable radius that varies between a maximum radius and a minimum radius in the circumferential direction about the rotational axis , wherein, in the radial gap between the inner contour and the rotor , a number of lift sections is constructed with pump chambers constructed in these sections, and wherein vane elements are mounted on the rotor , wherein these elements slide against the inner contour of the cam ring and limit the pump chambers in the circumferential direction. According to the invention, the radius of the inner contour varies about the rotational axis according to the function: r=r+a·sin(n·φ), where r=(r+r)/2, a =(r−r)/2, and φ=phase angle of the radius (r) between (r) and (r) in the direction of rotation of the rotor .