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:
Apr. 07, 2009
Filed:
Feb. 26, 2004
Ronald Kleine, Wetter, DE;
Andreas Kruschinski, Düsseldorf, DE;
Frank Demelius, Schmallenberg, DE;
Gottwald Port Technology GmbH, Duesseldorf, DE;
Abstract
The invention relates to a method and a device for safely disconnecting electric drives, wherein disturbances of the electric drive which are independent from the driving and lifting speed are recognized in a delay-free manner by retaining the safety function and are used for disconnecting the electric drive. The signals of the sensors () are detected in a redundant manner and are redundantly compared to preselected threshold values in evaluation devices () such that the electric drive () is safely disconnected in a redundant manner without using mechanical position devices if the preselected threshold value of the electric drive () is exceeded.