3478778

Information

• Patent Grant
• 3478778

• References
• Source

• Patent Number

  3,478,778

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1969
  55 years ago

• CPC

  • E03C1/106 - using two or more check valves
  • E03C1/108 - having an aerating valve
  • F16K15/00 - Check valves
  • F16K15/033 - spring-loaded
  • Y10T137/7901 - Valve head movably connected for accommodation to seat
  • Y10T137/7906 - Cam means for adjusting and fixing bias
  • Y10T137/7907 - Varying effective lever arm

• US Classifications

  • 137 - Fluid handling