3394499

Information

• Patent Grant
• 3394499

• References
• Source

• Patent Number

  3,394,499

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1968
  56 years ago

• CPC

  • E05F1/1041 - with a coil spring perpendicular to the pivot axis
  • E05F1/1223 - with a compression or traction spring
  • E05F15/40 - Safety devices
  • E05F15/603 - using rotary electromotors
  • E05F15/622 - using screw-and-nut mechanisms
  • E05F1/066 - Helical grooves, slots, threads or the like
  • E05Y2201/21 - Brakes
  • E05Y2201/22 - Locks
  • E05Y2201/246 - by motors, magnets, springs or weights
  • E05Y2201/26 - Mechanical friction
  • E05Y2201/266 - rotary
  • E05Y2201/434 - Electromotors Details thereof
  • E05Y2201/462 - Electromagnets
  • E05Y2201/638 - Cams Ramps
  • E05Y2600/454 - in or on the motor
  • E05Y2800/234 - of motors and brakes
  • E05Y2800/25 - Emergency conditions
  • E05Y2900/132 - Doors
  • Y10T16/2804 - Spring and gear

• US Classifications

  • 049 - Movable or removable closures
  • 016 - Miscellaneous hardware