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:
Jul. 26, 2005
Filed:
Jan. 24, 2003
Franz Pawellek, Lautertal, DE;
Andreas Schmidt, Schwarzbach, DE;
Franz Pawellek, Lautertal, DE;
Andreas Schmidt, Schwarzbach, DE;
GPM Geräte-und Pumpenbau GmbH, Merbelsrod (Thür.), DE;
Abstract
The present invention advantageously proposes an electrical coolant pump (), in particular for the coolant circuit of internal combustion engines for automotive vehicles, comprising a coolant pump motor for driving an impeller () through the intermediary of a pump shaft (), and a valve () that is integrated into the pump inlet, wherein for the first time the coolant pump motor constitutes the switching element for the valve (). Moreover the present invention for the first time specifies a method for controlling the valve (), wherein the work necessary for switching is afforded by the coolant pump motor and is transmitted to the valve (), in particular a 3/2-port directional control valve, via the shaft () of the pump motor.