CORNELL IRON WORKS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E05F DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING237
 
  
 
E05D HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS, OR WINGS 133

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5263527 Fire door release mechanismOct 28, 92Nov 23, 93[E05F]
5253693 Hold and release mechanism for a fire door spring tension adjusting wheelSep 29, 92Oct 19, 93[E05F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5896907 Rolling fire door including a door hold-open/release systemExpiredOct 23, 97Apr 27, 99[E05F]
5239777 Overhead door pre-loaded and pre-assembled torsion spring counterbalance assemblyExpiredMar 24, 92Aug 31, 93[E05F]
5151638 Motor overload indicating arrangementExpiredAug 12, 91Sep 29, 92[H02P]
5142822 Safety arrangement for automatic door operatorExpiredAug 26, 91Sep 01, 92[E05F]
4386645 Side folding closureExpiredFeb 10, 81Jun 07, 83[E05D]

Top Inventors for This Owner

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