3395568

Information

• Patent Grant
• 3395568

• References
• Source

• Patent Number

  3,395,568

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1968
  57 years ago

• CPC

  • F24F11/043 - dependent on air-current or wind pressure
  • A62B13/00 - Special devices for ventilating gasproof shelters
  • A62C4/02 - in gas-pipes
  • F16K17/006 - specially adapted for shelters
  • F16K31/44 - Mechanical actuating means
  • F24F11/00 - Control or safety systems or apparatus
  • F24F2011/0042 - Air pressure
  • F24F2011/0098 - closing air passage in case of fire, excessive heat or smoke

• US Classifications

  • 073 - Measuring and testing