3918881

Information

• Patent Grant
• 3918881

• References
• Source

• Patent Number

  3,918,881

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1975
  49 years ago

• CPC

  • F23Q9/12 - to permit the supply to the main burner in dependence upon existence of pilot flame
  • F23N5/123 - using electronic means
  • F23N5/203 - using electronic means
  • F23N2027/30 - for pilot burners
  • F23N2027/36 - Spark ignition
  • F23N2029/00 - Flame sensors
  • F23N2029/02 - Pilot flame sensors
  • F23N2031/06 - for flame failures
  • F23N2031/08 - for pilot flame failures
  • F23N2039/04 - Gaseous fuels

• US Classifications

  • 431 - Combustion