WESTLAND HELICOPTERS LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B64C AEROPLANES; HELICOPTERS 866
 
  
 
F16F SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION356
 
  
 
F16M FRAMES, CASINGS, OR BEDS, OF ENGINES OR OTHER MACHINES OR APPARATUS, NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS OR SUPPORTS233
 
  
 
G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES 219
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 2131
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR133
 
  
 
B64D EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS167
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 164
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS173

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8191826 Device which is subject to fluid flowFeb 17, 10Jun 05, 12[B64C]
7570475 Cowling assemblyJul 06, 06Aug 04, 09[H05F, B64D]
7314124 Vibration damping apparatusNov 18, 05Jan 01, 08[F16F]
7264444 AerofoilsOct 06, 04Sep 04, 07[F01D]
7182325 Compliant spacerJan 22, 04Feb 27, 07[F16F]
7114973 Contact arrangementOct 06, 04Oct 03, 06[H01R]
6911796 Power control deviceNov 20, 02Jun 28, 05[H02P, B60S]
6723272 Moulding processJun 07, 01Apr 20, 04[B29C]
5657946 Static vent unitsSep 13, 95Aug 19, 97[B64D]
5529458 Circulation control aerofoilsAug 18, 94Jun 25, 96[F04D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0012,748 Display systemAbandonedMay 27, 04Jan 20, 05[G06F]
2002/0145,076 AIRCRAFTAbandonedMar 26, 02Oct 10, 02[B64D]
5588616 Static vent unitsExpiredOct 03, 94Dec 31, 96[B64D]
5417501 Bearing assemblies for rotating shaftsExpiredAug 12, 94May 23, 95[F16C]
5332072 Strut assembliesExpiredNov 03, 92Jul 26, 94[F16F]
5169344 BackshellsExpiredDec 17, 90Dec 08, 92[H01R]
5100294 Helicopter rotorsExpiredSep 24, 90Mar 31, 92[B63H, B64C]
5024632 Transmission shaft with shear section and debris retainerExpiredNov 14, 89Jun 18, 91[F16D]
5014544 Method and apparatus for detecting cracks in helicopter rotor bladesExpiredJun 26, 89May 14, 91[G01M]
4995931 Method for forming components from fibre-reinforced thermoplastic materialsExpiredDec 19, 89Feb 26, 91[B32B]
4975022 Helicopter rotor bladesExpiredJun 27, 89Dec 04, 90[B64C]
4947334 Helicopter control systemsExpiredMar 27, 89Aug 07, 90[G06F]
4691877 Compound helicopter and powerplant thereforExpiredNov 14, 86Sep 08, 87[B64C]
4610410 Compound helicopter and powerplant thereforExpiredJul 20, 84Sep 09, 86[B64C]

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