Short Range Trapped Miner Locator

Details

• Personal Author:
  Church, Ronald H. ; Webb, William E.
• Description:
  A short range, low power, radio wave transmitter which acts as a miner locator. The transmitter is incorporated with the cap lamp circuitry for the miner. It utilizes the same self-contained power source and its wire connection thereto acts as the transmitter's antenna. No action on the miner's part is necessary in order to begin the transmission which may be on a specific identifying frequency for each miner. An electronic crowbar circuit may be used to conserve power for the transmitter by cutting off power to the cap lamp should the voltage across the self-contained power source fall below a preset level. This enables the transmitter to function for several days by reducing the load on the power source. [Description provided by NIOSH]
• Subjects:
  Emergencies Mining Occupational Health Safety
• Keywords:
  Communications Equipment Emergency Equipment Mine Safety Mining Industry Underground Miners
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Other
• Place as Subject:
  Alabama ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  TURC - Tuscaloosa Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-4
• NIOSHTIC Number:
  nn:10001466
• Citation:
  US Pat 4,491,971 1985 Jan; :1-4
• Federal Fiscal Year:
  1985
• Peer Reviewed:
  False
• Source Full Name:
  United States Patent 4,491,971
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9cd41cd1ca4dfc8e01052f8640bc643037b18bf9f19e2c9660d4a7607ef384e5a7983d3b5f6763bd511a8c26d08468d147b05bdd27e79c2ddeb26c437fdf43bc
• Download URL:
  https://stacks.cdc.gov/view/cdc/219388/cdc_219388_DS1.pdf
• File Type:
  [PDF - 311.71 KB ]