2864148

Information

• Patent Grant
• 2864148

• References
• Source

• Patent Number

  2,864,148

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1958
  66 years ago

• CPC

  • E21B41/0021 - Safety devices
  • E21B17/006 - Accessories for drilling pipes
  • E21B19/12 - Rope clamps rod, casings or tube clamps not secured to elevators
  • E21D15/306 - by means of a liquid
  • Y10T279/1283 - Fluid pressure directly moves jaws

• US Classifications

  • 175 - Boring or penetrating the earth
  • 279 - Chucks or sockets