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:
Sep. 02, 2008
Filed:
Mar. 18, 2005
Larry D. Frederick, Huntsville, AL (US);
Patricia Nichols, Madison, AL (US);
Dwight Medley, Fayetteville, TN (US);
Connie Allen, Brownsboro, AL (US);
Larry D. Frederick, Huntsville, AL (US);
Patricia Nichols, Madison, AL (US);
Dwight Medley, Fayetteville, TN (US);
Connie Allen, Brownsboro, AL (US);
Geosteering Mining Services LLC, Huntsville, AL (US);
Abstract
A safety system for mining equipment is provided having a proximity-based system with a marker field generator in an explosion-proof housing. The generator has a resonant circuit with an inductive reactance that is provided by a ferrite rod wound with an electrical conductor. Also provided is an RF receiver to receive information about the strength of the generated marker field from a sensing device used by a worker. The system provides for a personal alert device, carried by personnel to be kept at a safe distance from the mining machine, the personal alert device being capable of detecting the marker field. Also disclosed is a geosteering system that stops the cutting of a continuous miner when the cutter reaches an interface between a mineral being mined and an adjacent formation that is not to be mined.