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:
Jan. 13, 2009
Filed:
Jul. 04, 2003
Gerold Schultheiss, Pforzheim, DE;
Peter Ambros, Kusterdingen, DE;
Rolf Müller, Ludwigsburg, DE;
Rudolf Stoklossa, Mühlacker, DE;
Gerold Schultheiss, Pforzheim, DE;
Peter Ambros, Kusterdingen, DE;
Rolf Müller, Ludwigsburg, DE;
Rudolf Stoklossa, Mühlacker, DE;
BEHR GmbH & Co. KG, Stuttgart, DE;
Abstract
The invention relates to a device for driving a coolant pump () for the coolant circuit of an internal combustion engine in a motor vehicle comprising a drive train that encompasses a drive wheel (), a viscous coupling (), and a drive shaft (). The inventive driving device is provided with a second coupling () which is embodied as a clutch and can be connected to the drive train parallel to the viscous coupling (), resulting in increased redundancy and two-step rev control.