3867988

Information

• Patent Grant
• 3867988

• References
• Source

• Patent Number

  3,867,988

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1975
  49 years ago

• CPC

  • E21B6/06 - the rotation being intermittent, e.g.obtained by ratchet device
  • B25D11/06 - Means for driving the impulse member
  • B25D16/006 - Mode changers; Mechanisms connected thereto
  • B25F5/001 - Gearings, speed selectors, clutches or the like specially adapted for rotary tools
  • B25D2211/064 - Axial cams

• US Classifications

  • 173 - Tool driving or impacting