HARTWELL CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
E05C BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS 2812
 
 
 
E05B LOCKS; ACCESSORIES THEREFOR; HANDCUFFS1337
 
 
 
B64D EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS365
 
 
 
F16F SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION356
 
 
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 2123
 
 
 
B64C AEROPLANES; HELICOPTERS 272
 
 
 
E05D HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS, OR WINGS 232
 
 
 
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
 
 
 
C07H SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS 198
 
 
 
F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 148

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0069,118 HOLD OPEN ROD LOCKING MECHANISMSep 04, 15Mar 10, 16[F16B, B64D, E05F]
2014/0035,296 PRESSURE RELIEF LATCH MECHANISMJan 10, 12Feb 06, 14[E05C]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9650807 Tool operated channel latchFeb 18, 15May 16, 17[E05B, E05C]
9580945 Hold open rod locking sleeveNov 03, 13Feb 28, 17[E05C, F16F]
9500014 Locking hinge with spherical bearing assembliesOct 17, 13Nov 22, 16[E05D]
9169678 Pressure relief latch mechanismDec 03, 10Oct 27, 15[E05B, E05C, B64D]
8925979 Command latch and pin latch systemNov 26, 07Jan 06, 15[E05B, E05C, B64D]
8919829 Pressure relief latch, high repeatabilityDec 03, 10Dec 30, 14[E05B, E05C, B64D]
8544900 Tool operated channel latchFeb 02, 09Oct 01, 13[E05C, B65D]
8016327 Bifurcated latching systemAug 08, 07Sep 13, 11[E05C]
7578475 Pressure responsive blowout latchSep 13, 04Aug 25, 09[E05B]
7255376 Pressure sensing dead boltOct 04, 02Aug 14, 07[E05C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6945573 Externally adjustable latchExpiredApr 01, 03Sep 20, 05[E05C]
2005/0024,815 Latch fuseAbandonedSep 03, 03Feb 03, 05[H02B]
6042156 Overcenter double jaw latch mechanismExpiredAug 11, 98Mar 28, 00[E05C]
5984382 Extended reach latchExpiredMar 13, 98Nov 16, 99[E05C]
5820175 Self-closing latchExpiredSep 23, 96Oct 13, 98[E05C]
5800022 Quick release fastenerExpiredFeb 13, 97Sep 01, 98[B60B]
5681066 Two-point self-closing latchExpiredSep 22, 95Oct 28, 97[E05G]
5413391 Self-closing latchExpiredJul 12, 93May 09, 95[E05C]
5213381 Draw latchExpiredNov 25, 92May 25, 93[E05C]
5188403 Catch for door latchExpiredApr 26, 91Feb 23, 93[E05C]
5152559 Latching mechanismExpiredDec 04, 89Oct 06, 92[F05C]
5080229 Blind rivet and method and apparatus for making sameExpiredAug 13, 90Jan 14, 92[F16B]
5020835 Rod end lockExpiredNov 21, 89Jun 04, 91[E05C]
5016931 Latching mechanism having a pre-adjusted loadExpiredJun 20, 89May 21, 91[E05C]
4986576 Locking door latchExpiredApr 16, 90Jan 22, 91[E05C]
4979766 Panel latch assemblyExpiredJan 30, 89Dec 25, 90[E05C]
4964527 Paint saver and can seal protectorExpiredDec 18, 89Oct 23, 90[B65D]
4961329 Protective padlock hasp for use with padlocks having multiple length shacklesExpiredSep 15, 89Oct 09, 90[E05B, E05C]
4949560 Shackle protective padlock mountExpiredDec 20, 89Aug 21, 90[F05B]
4914783 Sliding hinge with lockingExpiredDec 05, 88Apr 10, 90[E05D]

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Top Inventors for This Owner

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