3718367

Information

• Patent Grant
• 3718367

• References
• Source

• Patent Number

  3,718,367

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1973
  52 years ago

• CPC

  • E21C41/16 - Methods of underground mining Layouts therefor
  • B60L1/003 - to auxiliary motors
  • B60L11/02 - using engine-driven generators
  • E21C37/16 - by fire-setting or by similar methods based on a heat effect
  • E21C37/18 - by electricity
  • E21D9/1073 - applying thermal energy
  • H01J37/1471 - for centering, aligning or positioning of ray or beam
  • H01J37/301 - Arrangements enabling beams to pass between regions of different pressure
  • B60L2200/40 - Working vehicles
  • Y02T10/70 - Energy storage for electromobility
  • Y02T10/7077 - on board the vehicle

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 037 - Excavating
  • 175 - Boring or penetrating the earth
  • 219 - Electric heating