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:
Oct. 22, 2019
Filed:
Apr. 27, 2017
Applicant:
Continental Automotive Gmbh, Hannover, DE;
Inventor:
Christian Böhm, Frankfurt am Main, DE;
Assignee:
Continental Automotive GmbH, Hannover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 2/00 (2006.01); F04C 28/18 (2006.01); F04C 14/04 (2006.01); F04C 2/10 (2006.01); F04C 14/12 (2006.01); F04C 15/00 (2006.01); F04C 15/06 (2006.01); F01M 1/02 (2006.01); F16H 57/04 (2010.01);
U.S. Cl.
CPC ...
F04C 14/04 (2013.01); F04C 2/102 (2013.01); F04C 14/12 (2013.01); F04C 15/008 (2013.01); F04C 15/06 (2013.01); F01M 1/02 (2013.01); F01M 2001/0238 (2013.01); F04C 2210/206 (2013.01); F04C 2240/20 (2013.01); F04C 2270/205 (2013.01); F16H 57/0436 (2013.01);
Abstract
A positive displacement pump for pumping oil in a motor vehicle transmission comprises a pump stage that has a central kidney-shaped suction cavity and two kidney-shaped pressure cavities. Oil is selectively pumped via one kidney-shaped pressure cavity or the other kidney-shaped pressure cavity in accordance with the direction of rotation of the pump stage. This makes it possible to create, with little complexity, two operating stages for the positive displacement pump.