2913879

Information

• Patent Grant
• 2913879

• References
• Source

• Patent Number

  2,913,879

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1959
  65 years ago

• CPC

  • F15B11/022 - in which a rapid approach stroke is followed by a slower, high-force working stroke
  • B30B15/161 - controlling the ram speed and ram pressure
  • F15B2211/30525 - Directional control valves
  • F15B2211/3056 - Assemblies of multiple valves
  • F15B2211/31541 - having a single pressure source and multiple output members
  • F15B2211/327 - electrically or electronically
  • F15B2211/40515 - with variable throttles or orifices
  • F15B2211/413 - the positions being continuously variable
  • F15B2211/41536 - being connected to multiple ports of an output member
  • F15B2211/428 - actuated by fluid pressure
  • F15B2211/455 - Control of flow in the feed line
  • F15B2211/50518 - using pressure relief valves
  • F15B2211/50572 - using a pressure compensating valve for controlling the pressure difference across a flow control valve
  • F15B2211/5158 - being connected to a pressure source and an output member
  • F15B2211/528 - actuated by fluid pressure
  • F15B2211/55 - for limiting a pressure up to a maximum pressure
  • F15B2211/625 - Accumulators
  • F15B2211/7053 - Double-acting output members
  • F15B2211/7107 - the output members being mechanically linked
  • F15B2211/7142 - the output members being arranged in multiple groups
  • F15B2211/775 - Combined control
  • F15B2211/8613 - the abnormal condition being oscillations
  • F15B2211/88 - Control measures for saving energy

• US Classifications

  • 091 - Motors: expansible chamber type