3220553

Information

• Patent Grant
• 3220553

• References
• Source

• Patent Number

  3,220,553

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1965
  59 years ago

• CPC

  • E03B7/074 - Arrangement of water treatment devices
  • E04H4/1245 - Recirculating pumps for swimming pool water
  • F04D9/041 - the priming pump having evacuating action
  • F04D29/2283 - for reverse pumping action
  • F04D29/506 - especially adapted for liquid pumps
  • F04D29/708 - specially for liquid pumps
  • Y10T137/2617 - Bypass or relief valve biased open
  • Y10T137/86839 - Four port reversing valves

• US Classifications

  • 210 - Liquid purification or separation
  • 137 - Fluid handling