3857197

Information

• Patent Grant
• 3857197

• References
• Source

• Patent Number

  3,857,197

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • E05F15/649 - operated by swinging arms
  • E05F15/40 - Safety devices
  • E05Y2201/22 - Locks
  • E05Y2201/244 - by manual operation
  • E05Y2201/434 - Electromotors Details thereof
  • E05Y2201/608 - Back-drive
  • E05Y2201/676 - Transmission of human force
  • E05Y2201/68 - Handles, cranks
  • E05Y2400/354 - End positions
  • E05Y2400/51 - of position, of back drive
  • E05Y2800/00 - Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/116 - Safety means therefore
  • E05Y2800/25 - Emergency conditions
  • E05Y2800/252 - the elements functioning only in case of emergency
  • E05Y2900/51 - for railway cars or mass transit vehicles

• US Classifications

  • 049 - Movable or removable closures
  • 105 - Railway rolling stock