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:
Aug. 26, 2014
Filed:
Apr. 30, 2009
Franz Pawellek, Lautertal, DE;
Andreas Schmidt, Schwarzbach, DE;
Eugen Schmidt, Merbelsrod/Thueringen, DE;
Franz Pawellek, Lautertal, DE;
Geraete- und Pumpenbau GmbH Dr. Eugen Schmidt, Merbelsrod/Thueringen, DE;
Abstract
The invention relates to a switchable coolant pump for combustion engines which is driven by a pulley, wherein the impeller can be driven switchably by the pulley by way of a friction pairing. The switchable coolant pump according to the invention, comprising a connecting flange () for a pressure booster (), the flange being disposed on the pump housing (), and a working piston () disposed in a working cylinder (), is characterized, among other things, in that on/in the pump housing () both the pulley () in a pulley bearing () and the pump shaft () in a pump bearing () are mounted separately, and a sleeve receptacle () is disposed in the pump housing (), wherein an annular channel () is located in the annular bottom () of the receptacle, and an annular piston working sleeve () is inserted in the sleeve receptacle () in the pump housing (), and an annular piston () that is provided with an annular piston packing () is disposed displaceably in the annular piston working sleeve ().