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:
Aug. 12, 2014
Filed:
Nov. 19, 2012
Leopold Kostal Gmbh & Co. KG, Luedenscheid, DE;
Stefan Otte, Sprockhovel, DE;
Matthias Steinbach, Dortmund, DE;
Leopold Kostal GmbH & Co. KG, Luedenscheid, DE;
Abstract
A method for moving a movable element into a block position includes providing a supply voltage to an electric motor associated with the movable element for the motor to generate a motor current and drive the element with motor power dependent on the motor current in order to move the element along a path. Upon the element being moved into a block position of the path, the supply voltage provided to the motor is controlled such that the motor current generated by the motor is continuously reduced over a time period to zero. For instance, the supply voltage is pulse-width modulated at a decreasing pulse duty ratio over the time period such that the motor current generated by the motor is continuously reduced over the time period to zero.