2780177

Information

• Patent Grant
• 2780177

• References
• Source

• Patent Number

  2,780,177

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1957
  68 years ago

• CPC

  • F04B53/1037 - Flap valves
  • F01L25/063 - the auxiliary valve being actuated by the working motor-piston or piston-rod
  • F04B7/0275 - and being deformable
  • F04B9/1235 - the movement of the pump piston in the two directions being obtained by two single-acting piston fluid motors, each acting in one direction
  • F04B43/0733 - with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series

• US Classifications

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