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. 28, 2011
Filed:
Jan. 21, 2009
Norman Wöckel, Weissach, DE;
Jürgen Bohner, Bad Waldsee, DE;
Kurt Schlegel, Hohentengen, DE;
Sven Peters, Eberhardzell, DE;
Paul Wahl, Bad Schussenried, DE;
Hilmar Gärtner, Bad Saulgau, DE;
Norman Wöckel, Weissach, DE;
Jürgen Bohner, Bad Waldsee, DE;
Kurt Schlegel, Hohentengen, DE;
Sven Peters, Eberhardzell, DE;
Paul Wahl, Bad Schussenried, DE;
Hilmar Gärtner, Bad Saulgau, DE;
Dr. Ing h.c. F. Porsche AG, Stuttgart, DE;
Abstract
An oil pump for an internal combustion engine for drawing up the lubricating oil situated in an oil collector device has an oil pump housing wherein at least two pairs of gears are disposed. The pairs of gears, in order to form the pumping stages, are connected on the suction side to a suction passage formed in the oil pump housing and on the delivery side to a delivery passage. The oil pump housing is further formed with an oil supply passage that is connected to the suction passage of a first pumping stage and via which lubricating oil can be delivered to the suction side of the first pumping stage.