1968297

Information

• Patent Grant
• 1968297

• References
• Source

• Patent Number

  1,968,297

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1934
  90 years ago

• CPC

  • E21B33/06 - Blow-out preventers, i.e. apparatus closing around a drill pipe
  • Y10T24/44068 - having gripping member actuated by fluid force
  • Y10T24/44308 - Tapered face
  • Y10T137/7785 - Valve closes in response to excessive flow

• US Classifications

  • 166 - Wells
  • 024 - Buckles, buttons, clasps, etc.
  • 137 - Fluid handling
  • 251 - Valves and valve actuation