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:
Oct. 08, 2013
Filed:
Sep. 08, 2008
Gerhard Merten, Lünen, DE;
Karl-heinz Schürer, Herne, DE;
Jörg Wirtz, Witten, DE;
Manfred Bäumler, Fellbach, DE;
Uwe Böker, Korb, DE;
Gerhard Merten, Lünen, DE;
Karl-Heinz Schürer, Herne, DE;
Jörg Wirtz, Witten, DE;
Manfred Bäumler, Fellbach, DE;
Uwe Böker, Korb, DE;
Caterpillar Global Mining Europe GmbH, Lunen, DE;
Abstract
An extraction device, particularly for mining, having two drive stations and a drive chain which extends between the sprockets thereof. So that hanging chain or chain wear to a conveyor chain, in the case of a conveyor device, or to a plow chain, in the case of a plow device, can be detected, magnetic sensor units for detecting at least one chain condition of the drive chain are provided, wherein each sensor unit includes a transmitter, which is formed by a static or dynamic magnetic field generator, and a detector field, which is provided with a plurality of magnetic field detectors, as a detector, the detector and the transmitter being arranged to the side of a passage for the run of the drive chain that is to be scanned. The invention also relates to a method for controlling an extraction device for preventing hanging chain.