2985447

Information

• Patent Grant
• 2985447

• References
• Source

• Patent Number

  2,985,447

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1961
  63 years ago

• CPC

  • F04D25/12 - the unit being adapted for mounting in apertures
  • E05F11/06 - in guide-channels
  • F04D29/646 - Mounting or removal of fans
  • F24F7/013 - using wall or window fans, displacing air through the wall or window possibly through a grill or through a shutter or flap
  • F24F13/14 - built up of tilting members
  • F24F13/1426 - characterised by actuating means
  • E05Y2900/146 - Shutters
  • F24F2013/1453 - with cables
  • F24F2013/146 - with springs
  • Y10T24/3902 - Chain
  • Y10T292/283 - Chain

• US Classifications

  • 049 - Movable or removable closures
  • 024 - Buckles, buttons, clasps, etc.
  • 292 - Closure fasteners
  • 415 - Rotary kinetic fluid motors or pumps
  • 454 - Ventilation