3847180

Information

• Patent Grant
• 3847180

• References
• Source

• Patent Number

  3,847,180

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1974
  50 years ago

• CPC

  • E02F9/2267 - Valves or distributors
  • E02F3/84 - Drives or control devices therefor
  • E02F9/2271 - Actuators and supports therefor and protection therefor
  • E02F9/2285 - Pilot-operated systems
  • F15B11/02 - Systems ess entially incorporating special features for controlling the speed or actuating force of an output member
  • F15B13/0417 - Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
  • F15B2211/20538 - constant capacity
  • F15B2211/30525 - Directional control valves
  • F15B2211/31576 - having a single pressure source and a single output member
  • F15B2211/324 - manually
  • F15B2211/50536 - using unloading valves controlling the supply pressure by diverting fluid to the return line
  • F15B2211/5157 - being connected to a pressure source and a return line
  • F15B2211/523 - manually
  • F15B2211/528 - actuated by fluid pressure
  • F15B2211/55 - for limiting a pressure up to a maximum pressure
  • F15B2211/57 - Control of a differential pressure
  • F15B2211/6051 - having valve means between output member and the load sensing circuit
  • F15B2211/6054 - using shuttle valves
  • F15B2211/6055 - using pressure relief valves
  • F15B2211/6355 - having valve means
  • F15B2211/7053 - Double-acting output members
  • F15B2211/76 - Control of force or torque of the output member
  • Y10T137/87185 - Controlled by supply or exhaust valve

• US Classifications

  • 137 - Fluid handling
  • 091 - Motors: expansible chamber type