Inertization system for highwall mining

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5997100
SERIAL NO

09168895

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A highwall mining system for mining aggregate material from a seam (8) includes a mining device (9) for cutting aggregate material from the seam (8) thereby to form a drive (10) in the seam (8), a conveying device (11) for conveying mined aggregate material from the drive (10), and a circulation device located on or in the region of the mining device (9) for circulating the atmosphere at least at the forward end of the drive (10). The system further includes an inertization device (60, 61, 63, 71) for maintaining the concentration of oxygen in the atmosphere in the drive (10) lower than the concentration of oxygen required for explosion of methane gas and/or dusts and/or other flammable materials in the drive (10).

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Patent Owner(s)

Patent OwnerAddress
THE BROKEN HILL PROPRIETARY COMPANY LIMITEDMELBOURNE VIC 3000

International Classification(s)

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  • 1998 Application Filing Year
  • E21F Class
  • 17 Applications Filed
  • 7 Patents Issued To-Date
  • 41.18 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances199819992000200120020255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Marshall, Gordon Alexander Camberwell, AU 2 8
Rigby, Geoffrey Raymond Charlestown, AU 2 8

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Patent Citation Ranking

  • 6 Citation Count
  • E21F Class
  • 14.29 % this patent is cited more than
  • 26 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges211101 - 1011 - 2000.511.522.533.544.555.566.577.588.599.51010.51111.512

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