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:
Jul. 15, 1997
Filed:
Feb. 13, 1996
Peter Heintzmann, Bochum, DE;
Kuno Guse, Witten, DE;
Bochumer Eisenhutte Heintzmann GmbH & Co. KG, Bochum, DE;
Abstract
A mining machine especially for seam mining as in the mining of coal has a sensor for incipient sag of the plow pass of the continuously driven endless chain and a computer to which the sensor is connected and which controls the conveyor drive at the upstream end of the plow pass and the downstream end of a conveyor pass to reduce the speed of this drive until the plow pass is retensioned and any sag is accumulated at the conveyor pass. This arrangement eliminates problems with dislocation of the mining plow or of the conveyor flights as they are guided by guide devices onto the plow trough at the upstream end of the plow pass.