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:
Nov. 12, 1996
Filed:
Jun. 15, 1995
Hans Martin, 70191 Stuttgart, DE;
Other;
Abstract
A heating device for motor vehicles, in particular a supplementary heating device for motor vehicles with a fluid-cooled internal combustion engine. The heating device operates according to the principle of fluid friction; a rotor that rotates in a working chamber, which chamber is completely filled with viscous fluid, is driven by an engine of the vehicle. As the rotor rotates, the viscous fluid emits its heat to a coolant, preferably the cooling water of the internal combustion engine. This heating device is switched on and off by an electromagnetic clutch which connects and disconnects the rotor to the drive engine of the vehicle. This heating device is of simple design, operates reliably, is maintenance-free and can be switched on and off precisely. The heating device can be mounted in the vehicle as desired, shortens the warming-up phase, in particular in the case of diesel engines, and can be used as a heating device even with hybrid drives.