3638857

Information

• Patent Grant
• 3638857

• References
• Source

• Patent Number

  3,638,857

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1972
  53 years ago

• CPC

  • F24F11/00 - Control or safety systems or apparatus
  • F24F11/0012 - Air temperature
  • F24F11/0015 - Air humidity
  • F24F2003/005 - with a single air duct for transporting treated primary air from the central station to air treatment units located in or near the rooms
  • F24F2003/006 - with two air ducts for separately transporting treated hot and cold primary air from the central station to air treatment units located in or near the rooms
  • F24F2221/54 - Heating and cooling, simultaneously or alternatively
  • Y10T137/2409 - With counter-balancing pressure feedback to the modulating device

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 137 - Fluid handling