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. 17, 2019
Filed:
Oct. 19, 2016
Pierburg Gmbh, Neuss, DE;
Stephan Zielberg, Bochum, DE;
Andreas Burger, Krefeld, DE;
Michael-Thomas Benra, Castrop-Rauxel, DE;
Stefan Rothgang, Rheinberg, DE;
Michael Becker, Korschenbroich, DE;
PIERBURG GMBH, Neuss, DE;
Abstract
A coolant pump for an internal combustion engine includes a delivery duct, a drive shaft, a coolant pump impeller arranged on the drive shaft to covey a coolant into the delivery duct, a control slide which controls a cross-section of an annular gap arranged between an outlet of the coolant pump impeller and the delivery duct, a side channel pump with a side channel pump impeller arranged on the drive shaft and a side channel, a pressure duct comprising a cross-section which fluidically connects an outlet of the side channel to a first pressure chamber of the control slide, a valve which opens and closes the cross-section of the pressure duct, and a first housing part arranged to have the side channel be formed therein and the control slide slidingly guided thereon. The coolant pump impeller is integrally formed with the side channel pump impeller.