3685593

Information

• Patent Grant
• 3685593

• References
• Source

• Patent Number

  3,685,593

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  52 years ago

• CPC

  • B25D9/265 - with arrangements for automatic stopping when the tool is lifted from the working face or suffers excessive bore resistance
  • E21B6/00 - Drives for combined percussion and rotary drilling
  • Y10S173/03 - Lubrication

• US Classifications

  • 173 - Tool driving or impacting