CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 854
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 899
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS470
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 399
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 384
 
  
 
B63H MARINE PROPULSION OR STEERING 238
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS248
 
  
 
B01D SEPARATION 1133
 
  
 
B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS127
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9306444 Harmonic neutralized frequency changer (HFNC) control system and a HFNC including the sameDec 18, 13Apr 05, 16[H02M]
8860342 System and method for controlling a permanent magnet motorSep 15, 11Oct 14, 14[H02P]
8690534 Backup seals in rotary pumpsJun 08, 09Apr 08, 14[F04D, F16J]
8439567 Disc springs/carrier plate preload assemblyNov 03, 11May 14, 13[F16C]
8393876 Gas tolerant subsea pumpMay 06, 10Mar 12, 13[F04B]
8076881 System and method for controlling an electric motorJun 16, 09Dec 13, 11[H02P]
7832385 Ripple reduction in electromagnetic launcher current from pulsed alternatorsDec 12, 07Nov 16, 10[F41F]
7569097 Subsea multiphase pumping systemsMay 26, 06Aug 04, 09[B01D]
7388766 Harmonic control and regulation system for harmonic neutralized frequency changerAug 26, 04Jun 17, 08[H02M]
7357128 Closed loop defined profile current controller for electromagnetic rail gun applicationsMar 17, 05Apr 15, 08[F41B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0172,367 Flow restricting devices in pumpsAbandonedJan 26, 06Jul 26, 07[F04B]
7219673 Transformerless multi-level power converterExpiredAug 25, 04May 22, 07[H02M]
2006/0043,814 Trapezoidal field pole shape in salient machinesAbandonedAug 25, 04Mar 02, 06[H02K]
6969939 Bolted connector for electrical equipmentExpiredSep 08, 03Nov 29, 05[H02K]
6879075 Trapezoidal shaped magnet flux intensifier motor pole arrangement for improved motor torque densityExpiredJan 31, 03Apr 12, 05[H02K]
6813328 Nuclear reactor submerged high temperature spool pumpExpiredDec 13, 02Nov 02, 04[G21C]
5532574 Brushless exciter protection circuitExpiredMar 28, 94Jul 02, 96[H02H]
5522335 Combined azimuthing and tunnel auxillary thruster powered by integral and canned electric motor and marine vessel powered therebyExpiredJan 30, 95Jun 04, 96[B63H]
5408155 Bearing assembly for an integral motor/propeller unitExpiredOct 08, 93Apr 18, 95[H02K, F16C]
5397949 Vibration cancellation apparatus with line frequency componentsExpiredJun 10, 93Mar 14, 95[H02K]
5291087 Sealed electric motor assemblyExpiredMar 03, 93Mar 01, 94[H02K]
5220231 Integral motor propulsor unit for water vehiclesExpiredAug 23, 90Jun 15, 93[H02K]
5185545 Dual propeller shock resistant submersible propulsor unitExpiredAug 23, 90Feb 09, 93[H02K]
5149141 Internally-located rotating union for a motor-generator setExpiredApr 24, 87Sep 22, 92[H02K]
5140204 Heat pipes for cooling pole windings of salient pole machinesExpiredJul 05, 91Aug 18, 92[H02K]
5108323 Deployment system for secondary propulsor unitExpiredSep 20, 90Apr 28, 92[B63H]
5101128 System and method for cooling a submersible electric propulsorExpiredAug 23, 90Mar 31, 92[H02K, F01D]
5057726 Structureborne vibration-compensated motor arrangement having back-to-back twin AC motorsExpiredOct 10, 90Oct 15, 91[H02K]
4963804 Apparatus and method for reducing vibration of rotating machineryExpiredJul 10, 89Oct 16, 90[F16F]
4831297 Submersible electric propulsion motor with propeller integrated concentrically with motor rotorExpiredFeb 16, 88May 16, 89[H02K]

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