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:
Dec. 04, 2001
Filed:
Mar. 13, 2000
Applicant:
Inventor:
Henry Strobel, Sulzbach, DE;
Assignee:
Mannesmann VDO AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 7/29 ;
U.S. Cl.
CPC ...
H02P 7/29 ;
Abstract
A regulator for heating and air-conditioning appliances in motor vehicles, having a suction fan which is driven by an electrically commutated DC motor and in whose induction air flow a temperature measurement sensor is arranged. A disturbance in motor running which may lead to an incorrect temperature measurement is detected at an early stage by providing measurement means which, in two time intervals, determine measurements that are proportional to the frequency of the motor voltage, and compare these measurements with one another.