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. 10, 2001
Filed:
Mar. 04, 1999
Kai Lehmann, Ludwigsfelde, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A water pump for the cooling circuit of an internal combustion engine. The water pump includes a pump housing and a pump device driven in the pump housing. A servo valve having a rotary gate is integrated in the pump housing. The rotary gate is approximately sleeve-shaped and is provided with an axial main opening for supply or discharge of cooling medium to the suction or pressure side of the pump device. Inlet and discharge openings for a cooler line connected to a cooler and for at least one additional partial circuit are provided in the peripheral wall of the pump housing. The rotary gate has on its peripheral wall a control opening with an opening width through which a connection from the main opening is created to an individual inlet or discharge opening, or an overlapping connection is created to two adjacent inlet or discharge openings for mixed operation.