Method and apparatus for a rotating cutting drum or arm mounted

Details Method and apparatus for a rotating cutting drum or arm mounted Method and apparatus for a rotating cutting drum or arm mounted

1996-07-23

1998-06-23

Bagnell, David J.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Ore/rock interface determination during cutting

324332, E21C 3524, E21C 3900

Patent

active

057695032

ABSTRACT:
For use in explosive atmospheres during mining, an flame proof or explosion proof internal AC alternator is provided to source electrical power from the rotations of a cutting head. A synthetic-pulse stepped-frequency ground-penetrating radar is used with oppositely circularly polarized transmitting and receiving antennas in a phase coherent microwave transceiver to measure the thickness of a coal deposit and to control the cut of a continuous mining machine operating in an underground mine. For example, a stepped-frequency radar and resonant microstrip patch antennas mounted near the outside surface of the cutting head to obtain measurements.

REFERENCES:
patent: 3961307 (1976-06-01), Hochheimer et al.
patent: 5072172 (1991-12-01), Stolarczyk et al.
patent: 5188426 (1993-02-01), Stolarczyk et al.

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