3036810

Information

• Patent Grant
• 3036810

• References
• Source

• Patent Number

  3,036,810

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1962
  62 years ago

• CPC

  • E21B34/12 - operated by movement of casings or tubings
  • E21B2034/005 - Flapper valves
  • Y10T74/18312 - Grooved
  • Y10T74/1832 - Multiple screw
  • Y10T74/18328 - Alternately rotated screw

• US Classifications

  • 251 - Valves and valve actuation
  • 074 - Machine element or mechanism
  • 166 - Wells