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. 30, 2004
Filed:
Apr. 16, 2002
Gerhard Mersch, Uetze, DE;
ArvinMeritor GmbH, Dietzenbach, DE;
Abstract
A method for eliminating squeaking noises occurring when operating a window lifter for motor vehicles which is driven by an electric motor is proposed. The squeaking noises are detected by a system for evaluating acoustic signals. This system generates for the duration of the squeaking noise a command signal which is delivered to a window lifter control device. This varies the speed of the electric motor within fixed limits, until the system for evaluating acoustic signals no longer detects any squeaking noise or it is recognised that speed variations are ineffective. The method is particularly advantageous if a voice control system which can be used as a system for evaluating acoustic signals is provided in the motor vehicle.