2989302

Information

• Patent Grant
• 2989302

• References
• Source

• Patent Number

  2,989,302

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • A62C2/18 - Sliding dampers
  • E05F15/643 - operated by flexible elongated pulling elements
  • E05F1/006 - by emergency conditions
  • E05F1/025 - with rectilinearly-moving counterweights
  • E05F1/046 - with rectilinearly-inclined tracks for sliding wings
  • E05Y2201/214 - Disengaging means
  • E05Y2201/244 - by manual operation
  • E05Y2201/41 - for closing
  • E05Y2201/422 - for opening
  • E05Y2201/50 - Weights
  • E05Y2800/25 - Emergency conditions
  • E05Y2900/134 - Fire doors

• US Classifications

  • 049 - Movable or removable closures