3872981

Information

• Patent Grant
• 3872981

• References
• Source

• Patent Number

  3,872,981

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  49 years ago

• CPC

  • F04B53/124 - Oscillating valves
  • A01K1/0142 - by means of a moving piston
  • F04B9/105 - reciprocating movement of the pumping member being obtained by a double-acting liquid motor
  • F04B15/023 - supply of fluid to the pump by gravity through a hopper

• US Classifications

  • 414 - Material or article handling
  • 198 - Conveyors: power-driven
  • 417 - Pumps