3744518

Information

• Patent Grant
• 3744518

• References
• Source

• Patent Number

  3,744,518

• Date Filed

  Not available

• Date Issued

  Tuesday, July 10, 1973
  51 years ago

• CPC

  • F15B13/08 - Assemblies of units, each for the control of a single servomotor only
  • F15B11/165 - for adjusting the pump output or bypass in response to demand
  • F15B13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
  • F15B13/0416 - with means or adapted for load sensing
  • F15B2211/20538 - constant capacity
  • F15B2211/30505 - Non-return valves
  • F15B2211/30515 - Load holding valves
  • F15B2211/30525 - Directional control valves
  • F15B2211/3116 - the pump port being open in the centre position
  • F15B2211/321 - mechanically
  • F15B2211/40515 - with variable throttles or orifices
  • F15B2211/426 - electrically or electronically
  • F15B2211/45 - Control of bleed-off flow
  • F15B2211/50536 - using unloading valves controlling the supply pressure by diverting fluid to the return line
  • F15B2211/5151 - being connected to a pressure source and a directional control valve
  • F15B2211/528 - actuated by fluid pressure
  • F15B2211/55 - for limiting a pressure up to a maximum pressure
  • F15B2211/634 - representing a state of a valve
  • F15B2211/6651 - Control of the prime mover
  • F15B2211/7052 - Single-acting output members
  • F15B2211/7053 - Double-acting output members
  • F15B2211/71 - Multiple output members
  • Y10T137/5283 - Units interchangeable between alternate locations
  • Y10T137/7766 - Choked passage through main valve head
  • Y10T137/7792 - Movable deflector or choke
  • Y10T137/87177 - With bypass

• US Classifications

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