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:
Nov. 26, 2013
Filed:
Aug. 26, 2011
Applicant:
Larry D. Frederick, Huntsville, AL (US);
Inventor:
Larry D. Frederick, Huntsville, AL (US);
Assignee:
Geosteering Mining Services, LLC, Huntsville, AL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 35/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for detecting the presence of mineral seams during coal or ore mining operations. A mining machine with a cutter drum includes a detector assembly that includes two detectors attached near the surface cut by the cutter drum. The detectors include downward facing windows that receive gamma radiation from mined material and undesirable material. One detector is positioned lower than the other and over a trench created below the surface cut by the cutter drum. The cutting depth of the cutter drum may be controlled based on radiation levels detected by the detectors.