3522817

Information

• Patent Grant
• 3522817

• References
• Source

• Patent Number

  3,522,817

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1970
  54 years ago

• CPC

  • F15B21/00 - Common features Fluid-pressure systems, or details thereof, not covered by any preceding group
  • F15B11/00 - Servomotor systems without provision for follow-up action; Circuits therefor
  • F15B2211/205 - Systems with pumps
  • F15B2211/50536 - using unloading valves controlling the supply pressure by diverting fluid to the return line
  • F15B2211/513 - the positions being continuously variable
  • F15B2211/5157 - being connected to a pressure source and a return line
  • F15B2211/522 - actuated by biasing means
  • F15B2211/528 - actuated by fluid pressure
  • F15B2211/56 - Control of an upstream pressure
  • Y10T137/7764 - Choked or throttled pressure type
  • Y10T137/7782 - With manual or external control for line valve

• US Classifications

  • 137 - Fluid handling
  • 251 - Valves and valve actuation