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:
Feb. 19, 2002
Filed:
Jun. 09, 1999
Applicant:
Inventors:
Harald Eisenhardt, Rutesheim, DE;
Rolf Falliano, Steinenberg, DE;
Assignee:
GKR Gesellschaft fur Fahrzeugklimaregelung mbH, Schwieberdingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/14 ;
U.S. Cl.
CPC ...
H05B 3/14 ;
Abstract
An electric heater for a motor vehicle uses heat generated by power semiconductors as the heat source. The heat output by the power semiconductors is used directly for heating. The power semiconductors are regulated by circuit regulators to be able to adjust the heating power continuously. In addition, switching devices are provided which interrupt or shut down the respective branch circuits individually in the event of short circuits in the power semiconductors.