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:
Sep. 14, 1999
Filed:
May. 12, 1997
Hans-Dieter Lieb, Grub am Forst, DE;
Andre Eberlein, Coburg, DE;
Michael Friedrich, Coburg, DE;
Jurgen Seeberger, Baunach, DE;
Brose Fahrzeuteile GmbH & Co. KG, Coburg, DE;
Abstract
A motor-driven window lifter for a motor vehicle with electronic means to protect against entrapment of body parts in the window opening with at least one spring in the line of force between the drive unit (such as an electric motor or gear) and the window pane is characterized in that the blocking force of the spring corresponds at a maximum to the sum of the displacement force anticipated and the admissible entrapment force and that the spring characteristic when an initial load is exceeded has a decreasing, preferably negative curve, such that the spring enables a relatively long path of the drive unit when the initial load is exceeded.