3721091

Information

• Patent Grant
• 3721091

• References
• Source

• Patent Number

  3,721,091

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • F15B11/072 - Combined pneumatic-hydraulic systems
  • B05B12/06 - for effecting pulsating flow
  • F01B17/00 - Reciprocating-piston machines or engines characterised by use of uniflow principle
  • F01B17/02 - Engines
  • F01L25/066 - piston or piston-rod being used as auxiliary valve
  • F04B7/04 - in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
  • F04B9/125 - reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
  • F15B2211/20576 - with multiple pumps
  • F15B2211/30525 - Directional control valves
  • F15B2211/321 - mechanically
  • F15B2211/40515 - with variable throttles or orifices
  • F15B2211/424 - actuated by an output member of the circuit
  • F15B2211/455 - Control of flow in the feed line
  • F15B2211/7725 - with automatic reciprocation
  • F15B2211/8855 - Compressible fluids
  • Y10T137/7722 - Line condition change responsive valves

• US Classifications

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