2657421

Information

• Patent Grant
• 2657421

• References
• Source

• Patent Number

  2,657,421

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1953
  71 years ago

• CPC

  • E05D7/1005 - by axially moving free pins, balls or sockets
  • E05D7/0423 - Screw-and-nut mechanisms
  • E05D7/081 - the pivot axis of the wing being situated near one edge of the wing, especially at the top and bottom
  • E05F1/1246 - with a coil spring perpendicular to the pivot axis
  • E05D15/54 - for opening both inwards and outwards
  • E05Y2201/638 - Cams Ramps
  • Y10T16/53225 - including screw-operated means to move hinged members

• US Classifications

  • 016 - Miscellaneous hardware