2322237

Information

• Patent Grant
• 2322237

• References
• Source

• Patent Number

  2,322,237

• Date Filed

  Not available

• Date Issued

  Tuesday, June 22, 1943
  81 years ago

• CPC

  • E21C1/10 - with a built-in feeding device
  • E21B19/081 - Screw-and-nut feed mechanisms
  • Y10T74/173 - Screw and nut adjusting means
  • Y10T408/6793 - Screw coaxial with Tool

• US Classifications

  • 074 - Machine element or mechanism
  • 173 - Tool driving or impacting
  • 408 - Cutting by use of rotating axially moving tool