3696868

Information

• Patent Grant
• 3696868

• References
• Source

• Patent Number

  3,696,868

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1972
  53 years ago

• CPC

  • E21B34/106 - the retrievable element being a secondary control fluid actuated valve landed into the bore of a first inoperative control fluid actuated valve
  • E21B2034/002 - Ball valves
  • Y10T137/7225 - Mechanical movement between lock and valve
  • Y10T137/86936 - Pressure equalizing or auxiliary shunt flow

• US Classifications

  • 166 - Wells
  • 137 - Fluid handling