3768506

Information

• Patent Grant
• 3768506

• References
• Source

• Patent Number

  3,768,506

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1973
  51 years ago

• CPC

  • E21B34/08 - responsive to flow or pressure of the fluid obtained
  • E21B2034/002 - Ball valves
  • Y10T137/7725 - Responsive to both high and low pressure or velocity
  • Y10T137/7727 - Excessive flow cut-off
  • Y10T137/7732 - With mechanical stop against reopening
  • Y10T137/7785 - Valve closes in response to excessive flow

• US Classifications

  • 166 - Wells
  • 137 - Fluid handling