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:
Apr. 17, 2007
Filed:
Jul. 03, 2003
Thomas Bielesch, Mühlacker, DE;
Thomas Bielesch, Mühlacker, DE;
BEHR GmbH & Co. KG, Stuttgart, DE;
Abstract
The invention relates to a circuit () for protecting against overload of an electric motor (), more particularly an electrically powered air blower for a vehicle, with the purpose of providing sufficient and appropriate protection even when several electric motors are connected in series. Said circuit is provided with at least one switching element () for controlling two series connected electric motors () independent of revolutions, in which a switch element () configured as a make contact element () is connected in parallel to the electric motor (), said switch element causing short circuiting of the corresponding electric motor () in case of overheating.