3866690

Information

• Patent Grant
• 3866690

• References
• Source

• Patent Number

  3,866,690

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1975
  50 years ago

• CPC

  • B25D9/145 - for hydraulically actuated hammers having an accumulator
  • B25D9/12 - comprising a built-in liquid motor
  • E02F3/966 - of hammer-type tools
  • Y10S173/04 - Liquid operated

• US Classifications

  • 173 - Tool driving or impacting
  • 091 - Motors: expansible chamber type
  • 299 - Mining or in situ disintegration of hard material