3820922

Information

• Patent Grant
• 3820922

• References
• Source

• Patent Number

  3,820,922

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • F04B53/1097 - with means for lifting the closure member for pump cleaning purposes
  • F04B1/00 - Multi-cylinder machines or pumps characterised by number or arrangements of cylinders
  • F04B49/243 - by keeping open the inlet valve
  • F04B53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/109 - inlet and outlet valve forming one unit
  • F04B53/164 - Stoffing boxes

• US Classifications

  • 417 - Pumps
  • 092 - Expansible chamber devices