3926461

Information

• Patent Grant
• 3926461

• References
• Source

• Patent Number

  3,926,461

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1975
  49 years ago

• CPC

  • E05F3/222 - electrically operated
  • E05F15/72 - responsive to emergency conditions
  • E05F2003/228 - Arrangements where the end of the closer arm is sliding in a track
  • E05Y2201/41 - for closing
  • E05Y2201/462 - Electromagnets
  • E05Y2201/484 - Torsion springs
  • E05Y2201/488 - Traction springs
  • E05Y2800/25 - Emergency conditions
  • E05Y2900/132 - Doors
  • Y10T292/301 - Friction catch

• US Classifications

  • 292 - Closure fasteners