2972864

Information

• Patent Grant
• 2972864

• References
• Source

• Patent Number

  2,972,864

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1961
  63 years ago

• CPC

  • E02F9/2267 - Valves or distributors
  • B23D7/105 - hydraulically driven
  • B23Q5/033 - driven essentially by fluid pressure
  • B24B47/06 - by liquid or gas pressure only
  • E02F9/22 - Hydraulic or pneumatic drives
  • E02F9/2271 - Actuators and supports therefor and protection therefor
  • E02F9/2296 - Systems with a variable displacement pump
  • F01L25/063 - the auxiliary valve being actuated by the working motor-piston or piston-rod
  • F01L25/08 - by electric or magnetic means
  • F04B49/002 - Hydraulic systems to change the pump delivery
  • F15B11/048 - with deceleration control
  • F15B2211/20553 - with pilot circuit
  • F15B2211/20561 - reversible
  • F15B2211/20576 - with multiple pumps
  • F15B2211/255 - Flow control functions
  • F15B2211/2656 - by control of the pumps
  • F15B2211/305 - characterised by the type of valves
  • F15B2211/30525 - Directional control valves
  • F15B2211/31535 - having multiple pressure sources and a single output member
  • F15B2211/325 - actuated by an output member of the circuit
  • F15B2211/613 - Feeding circuits
  • F15B2211/7054 - Having equal piston areas
  • F15B2211/755 - Control of acceleration or deceleration of the output member

• US Classifications

  • 060 - Power plants