3644748

Information

• Patent Grant
• 3644748

• References
• Source

• Patent Number

  3,644,748

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  52 years ago

• CPC

  • F23N5/22 - with a time programme acting through mechanical means
  • F23N2027/04 - Prepurge
  • F23N2027/12 - Burner simulation or checking
  • F23N2029/00 - Flame sensors
  • F23N2031/20 - Warning devices
  • F23N2033/06 - at the air intake
  • Y10T307/773 - Light, heat, vibratory or radiant energy
  • Y10T307/951 - With time delay or retardation means

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical
  • 431 - Combustion