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:
Mar. 22, 2005
Filed:
Jul. 03, 2001
Erwin Kessler, Saulgau, DE;
Wolfgang Schulter, Meersburg, DE;
Erwin Kessler, Saulgau, DE;
Wolfgang Schulter, Meersburg, DE;
Conti Temic microelectronic GmbH, Nuremberg, DE;
Abstract
The invention relates to a simple, economical and reliable method for providing anti-jamming protection. According to said method, the excess force—the difference between the driving force and the friction force—is compared with a trigger threshold. To this end, the curve of the friction force of the current actuation process, which is dependent on the actuation path of the electrical drive unit, is compared to the curve of the friction force of at least one previous actuation process and the trigger threshold value is modified according to how the friction force curves correspond. The invention also relates to a method for providing anti-jamming protection for an electrical drive unit for window lifting drives.