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:
Jun. 30, 2015
Filed:
Sep. 25, 2013
Robert Bosch Gmbh, Stuttgart, DE;
Harald Speer, Freiberg, DE;
Norbert Alaze, Markgroeningen, DE;
Karl-Heinz Hach, Schweiberdingen, DE;
Andreas Klein, Dresden, DE;
Edgar Kurz, Heilbronn-Horkheim, DE;
Robert Bosch GmbH, Stuttgart, DE (US);
Abstract
An internal gear pump includes a separator arranged in a pump chamber of the internal gear pump. The separator divides the pump chamber into a delivery chamber and a suction chamber and is arranged so as to be radially moveable and capable of pivoting. The internal gear pump further includes a bearing ring in which a ring gear of the internal gear pump is rotatably supported such that it can pivot about a pin. A pressure prevailing in the pump chamber when the internal gear pump is in operation acts on the ring gear and the bearing ring with a torque, which acts inwardly from the pin in a circumferential direction to the suction chamber and presses tooth tips of teeth of the ring gear inwards against the separator and presses the separator inwards against tooth tips of teeth of the pinion.