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:
Jul. 22, 2003
Filed:
May. 23, 2001
Applicant:
Inventors:
Rolf Dürrstein, Bietigheim, DE;
Cornelius Peter, Bühl, DE;
Assignee:
TRW Automotive Electronics & Components GmbH & Co. KG, Radolfzell, DE;
Primary Examiner:
Int. Cl.
CPC ...
B60R 2/234 ;
U.S. Cl.
CPC ...
B60R 2/234 ;
Abstract
The torque developed at a belt shaft of a belt retractor coupled to an electric motor via a drive belt is controlled so as to avoid a hysteresis. For this purpose, the direction of rotation of the belt shaft is detected and, depending on the direction of rotation as detected, the electric current supplied to the electric motor is changed from a first value to a second value that is different from the first value by an amount required to compensate for hysteresis.