Hackforth GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 883
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 155
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
B63B SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 137
 
  
 
B63H MARINE PROPULSION OR STEERING 139
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9701386 Shaft made of fiber composite material with fireproof bulkhead feedthroughAug 08, 13Jul 11, 17[B63H, F16C, F16D, B63B]
9163673 Method for producing a coupling segment of a flexible couplingDec 16, 11Oct 20, 15[B23P, F16D, B32B]
9028333 Shaft for transmitting torquesSep 05, 11May 12, 15[F16C, F16D]
7597626 Membrane coupling in a compact designApr 02, 05Oct 06, 09[F16D]
6976921 CouplingNov 02, 01Dec 20, 05[F16D]
6896622 Elastic shaft couplingNov 10, 00May 24, 05[F16D]
6623362 Elastic shaft couplingFeb 05, 01Sep 23, 03[F16D]
6234903 Shaft coupling with cooling elementsSep 27, 99May 22, 01[F16D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8357051 Torsionally elastic shaft coupling comprising a bridgeable elastomer memberExpiredSep 18, 07Jan 22, 13[F16D]
2012/0283,380 RUBBER MIXTURE FOR ELASTIC COUPLINGAbandonedNov 03, 10Nov 08, 12[C08L, C08K]
8033919 Elastic shaft coupling having non-identical rubber bodiesExpiredApr 05, 07Oct 11, 11[F16D]
6582148 Elastic shaft coupling having a torsion elementExpiredJul 05, 01Jun 24, 03[F16D]
2002/0082,091 Shaft couplingAbandonedFeb 08, 02Jun 27, 02[F16D]
6361443 Shaft couplingExpiredDec 10, 99Mar 26, 02[F16D]
5484339 Articulated couplingExpiredNov 05, 93Jan 16, 96[F16D]
5360375 Device for mechanically transmitting torqueExpiredJul 30, 92Nov 01, 94[F16D]
5066263 Resilient shaft couplingExpiredNov 02, 90Nov 19, 91[F16D]
4929115 Resilient shaft couplingExpiredMar 25, 88May 29, 90[F16D]
4911484 Clamping ring pipe connection for metallic pipesExpiredDec 20, 88Mar 27, 90[F16L]
4795402 Resilient shaft couplingExpiredJun 25, 87Jan 03, 89[F16D]
4781654 Resilient shaft couplingExpiredDec 17, 86Nov 01, 88[F16D]
4708514 Resilient shaft couplingExpiredSep 16, 85Nov 24, 87[F16D]
4610642 Ring segment connection arrangement for link couplingExpiredFeb 21, 85Sep 09, 86[F16D]
4563166 Extra-resilient shaft couplingExpiredMar 23, 84Jan 07, 86[F16D]
4483056 Tool for closing pipe couplingsExpiredJul 13, 82Nov 20, 84[F16L]
4432739 Spring steel liquid-damped shaft couplingExpiredDec 10, 80Feb 21, 84[F16D]
4389204 Resilient shaft coupling, more particularly an interposed cardan shaft couplingExpiredMar 26, 81Jun 21, 83[F16D]
4347716 Flexible shaft couplingExpiredSep 16, 80Sep 07, 82[F16D]

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