2322739

Information

• Patent Grant
• 2322739

• References
• Source

• Patent Number

  2,322,739

• Date Filed

  Not available

• Date Issued

  Tuesday, June 22, 1943
  81 years ago

• CPC

  • E21B3/02 - Surface drives for rotary drilling
  • F15B11/00 - Servomotor systems without provision for follow-up action; Circuits therefor
  • F15B2211/20584 - Combinations of pumps with high and low capacity
  • F15B2211/30525 - Directional control valves
  • F15B2211/31594 - having multiple pressure sources and multiple output members
  • F15B2211/324 - manually
  • F15B2211/45 - Control of bleed-off flow
  • F15B2211/50518 - using pressure relief valves
  • Y10T24/44068 - having gripping member actuated by fluid force

• US Classifications

  • 060 - Power plants
  • 024 - Buckles, buttons, clasps, etc.
  • 091 - Motors: expansible chamber type
  • 092 - Expansible chamber devices
  • 173 - Tool driving or impacting