3331328

Information

• Patent Grant
• 3331328

• References
• Source

• Patent Number

  3,331,328

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1967
  57 years ago

• CPC

  • F04B39/0016 - with valve arranged in the piston
  • E03B5/025 - with surface tanks
  • F04B11/0025 - the spring fluid being in direct contact with the pumped fluid
  • F04B35/04 - the means being electric
  • F04B39/042 - sealing being provided on the piston
  • F04B39/1006 - the members being ball valves
  • F04B49/025 - by means of floats
  • F04D13/16 - with storage reservoirs
  • Y10T137/3127 - With gas maintenance or application

• US Classifications

  • 137 - Fluid handling
  • 092 - Expansible chamber devices
  • 417 - Pumps