3838946

Information

• Patent Grant
• 3838946

• References
• Source

• Patent Number

  3,838,946

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1974
  50 years ago

• CPC

  • F04B9/135 - reciprocating movement of the pumping members being obtained by two single-acting elastic-fluid motors, each acting in one direction
  • F01L15/08 - with cylindrical, sleeve, or part-annularly-shaped valves Such main valves combined with auxiliarly valves
  • F01L25/063 - the auxiliary valve being actuated by the working motor-piston or piston-rod
  • F04B43/0736 - with two or more pumping chambers in parallel

• US Classifications

  • 417 - Pumps
  • 091 - Motors: expansible chamber type