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. 26, 1976
Filed:
Jun. 02, 1975
Karl-Heinz Weber, Witten-Heven, DT;
Abstract
Method and apparatus for controlling a mining machine, specifically a longwall mining machine, of the type in which the mining machine is advanced into a mineral seam by an advancing motor and a rotating mineral-cutting element on the machine is driven by a cutter drive motor. The invention resides in the realization that the specific cutting work of the machine, which is the work required to mine and remove a given unit of mined material, can be minimized by minimizing the differential quotient: ##EQU1## WHERE: N.sub.Wa is the driving power of the cutter drive motor; and
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