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. 11, 2013
Filed:
Feb. 22, 2012
Sebastian Hurst, Bubenreuth, DE;
Markus Popp, Bamberg, DE;
Sebastian Hurst, Bubenreuth, DE;
Markus Popp, Bamberg, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A regulatable coolant pump for a cooling circuit of an internal combustion engine having a pump housing with a hollow pump shaft with an impeller. Rotation of the impeller moves coolant. An axially displaceable guide disk on the impeller controls a pump displacement volume and works via an actuating mechanism. The guide disk is rigidly connected to a connecting rod guided in the pump shaft. The actuating mechanism includes a displacement pump integrated in the coolant pump, and an actuator formed as a piston-cylinder unit with a pressure chamber in the pump housing that has a circular annular shape positioned to coincide with an outer region of the guide disk. A piston that works together with the guide disk is guided in linearly displaceable fashion in the pressure chamber. A coolant flow of the displacement pump controlled by a control valve charges the pressure chamber to displace the piston.