Patent ID: 9151156
Filing Date: 2015-10-06
Classification: E21C,G01B

Abstract:
1. A guidance system comprising: a mining machine including a cutter head configured to cut material from a mine seam, the mining machine including a first end for supporting the cutter head and a second end opposite the first end; a first light emitter generating a first planar laser projection for indicating an orientation of the mining machine with respect to the mine seam, the first planar laser projection being projected onto a mine surface; a second light emitter generating a second planar laser projection for indicating an orientation of the mining machine with respect to the mine seam; a carriage supporting the first light emitter and the second light emitter; a first target surface and a second target surface coupled to the mining machine; a third target surface coupled to the mining machine; and a third light emitter supported by the carriage, the third light emitter generating a third laser projection on the third target surface.