Westinghouse Air Brake Company

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B60T VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL 7123
 
  
 
B61G COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES; DRAUGHT OR BUFFING APPLIANCES SPECIALLY ADAPTED FOR RAILWAY VEHICLES204
 
  
 
B61L GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 1711
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING1459
 
  
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 982
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 755
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 749
 
  
 
B61H BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES; ARRANGEMENTS OR DIS-POSITIONS OF BRAKES OR OTHER RETARDING APPARATUS IN RAIL VEHICLES 610
 
  
 
B61C LOCOMOTIVES; MOTOR RAILCARS 511
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 579

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7143546 Sealing arrangement for a transit vehicleDec 05, 03Dec 05, 06[E06B]
6952932 Aftercooler bypass means for a locomotive compressed air systemSep 12, 03Oct 11, 05[F25D]
6793146 Battery powered humidity indicatorDec 13, 02Sep 21, 04[F24F]
6761253 Spring applied parking brake assemblyFeb 24, 00Jul 13, 04[B60T]
6631791 Brake disc wear indicatorDec 15, 99Oct 14, 03[F16D]
6628019 High efficiency pneumatically driven electric power generatorJul 21, 99Sep 30, 03[H02K]
6619138 Apparatus for dynamically adjusting size of an orifice to increase accuracy in measuring the rate of air flowJul 07, 99Sep 16, 03[G01F]
6499613 Coupler with extended emergency release and towing featureDec 30, 99Dec 31, 02[B61G]
6481722 Gasket for pressurized fluid systemFeb 24, 00Nov 19, 02[F16J]
6474748 Electronic vent valveAug 06, 99Nov 05, 02[B60T]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6681217 Boolean text search combined with extended regular expression searchExpiredOct 25, 99Jan 20, 04[G06F]
2003/0200,020 METHOD OF AND AN APPARATUS FOR ENHANCING THE BRAKING EFFICIENCY OF A RAILWAY FREIGHT TRAIN CONSISTAbandonedSep 20, 99Oct 23, 03[B60T]
6568711 Self gapping socket weld fittingsExpiredFeb 16, 00May 27, 03[F16L]
6525647 System and method of verifying the authenticity of input signalsExpiredJul 07, 99Feb 25, 03[G05B, G06F]
2002/0179,384 Polymer based backing plates for railway brake shoes and disc padsAbandonedJul 18, 02Dec 05, 02[F16D]
2002/0178,321 PROGRAMMABLE SYSTEM INCLUDING SELF LOCKING MEMORY CIRCUIT FOR A TRISTATE DATA BUSAbandonedSep 23, 99Nov 28, 02[G06F]
6474452 Polymer based backing plates for railway brake shoes and disc padsExpiredDec 22, 99Nov 05, 02[F16D]
6390313 Slackless drawbar assembly using an improved ball and race connection assemblyExpiredSep 16, 98May 21, 02[B61G]
6377215 Apparatus and method for detecting railroad locomotive turns by monitoring truck orientationExpiredJun 09, 98Apr 23, 02[B61F, G05D, G01S]
6360998 Method and apparatus for controlling trains by determining a direction taken by a train through a railroad switchExpiredJun 09, 98Mar 26, 02[B61L]
6340211 Dual station air brake controlExpiredSep 03, 97Jan 22, 02[B60T]
6324789 Encased overhead door operator having threadably attached mountsExpiredDec 17, 99Dec 04, 01[E05D, E05F]
6302664 Oilers rotary scroll air compressor axial loading support for orbiting memberExpiredMay 31, 00Oct 16, 01[F03C]
6298749 Jointed hand brake release handleExpiredApr 16, 98Oct 09, 01[G05G]
6286913 Limp-in control arrangement for an electro-pneumatic brake control systemExpiredNov 09, 95Sep 11, 01[B60T]
6279689 Hydraulic parking brake for a railroad vehicle braking systemExpiredJan 20, 99Aug 28, 01[B61H]
6276492 Push rod activated grease nozzleExpiredMar 07, 00Aug 21, 01[F16N]
6275165 A.A.R. compliant electronic braking systemExpiredMar 19, 98Aug 14, 01[G05B]
6247566 Torque Transmitting deviceExpiredSep 10, 99Jun 19, 01[B60K, F16D]
2001/0003,301 LOW PROFILE AIR COOLED AIR COMPRESSOR AND AFTERCOOLERAbandonedJul 14, 99Jun 14, 01[F04C, F03C, F01C]

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