3252503

Information

• Patent Grant
• 3252503

• References
• Source

• Patent Number

  3,252,503

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1966
  58 years ago

• CPC

  • E05F15/673 - operated by screw-and-nut mechanisms
  • E05F15/67 - operated by flexible or rigid rack-and-pinion arrangements
  • E05F15/73 - responsive to movement or presence of persons or objects
  • E05F15/681 - operated by flexible elongated pulling elements
  • E05Y2201/652 - Belts
  • E05Y2900/106 - for garages
  • Y10S388/924 - Centrifugal device

• US Classifications

  • 160 - Flexible or portable closure, partition, or panel
  • 049 - Movable or removable closures
  • 318 - Electricity: motive power systems
  • 388 - Electricity: motor control systems