Western-Cullen-Hayes, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B61L GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 620
 
  
 
B61K OTHER AUXILIARY EQUIPMENT FOR RAILWAYS 49
 
  
 
B61F RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES, ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING; WHEELS GUARDS; OBSTRUCTION REMOVERS OR THE LIKE 220
 
  
 
E01F ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE218
 
  
 
B06B GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL 123
 
  
 
F16F SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION158
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8262033 Derail assemblyOct 21, 10Sep 11, 12[B61L]
7909293 Low profile derailAug 25, 09Mar 22, 11[B61L]
7554237 Centrifugal-effect vibration generator having coaxial contrarotating rotorsMay 24, 06Jun 30, 09[H02K, B06B, F16F]
7549611 Hinged derail with assisted manual lifting and method for constructingDec 06, 06Jun 23, 09[B61K, B61L]
6966146 Two directional crossing gate arm protection assemblyDec 18, 02Nov 22, 05[E01F]
6327818 Crossing gate arm protection assemblyAug 17, 00Dec 11, 01[E01F]
6308638 Wheel stop for an overhead vehicleJul 17, 00Oct 30, 01[B61K]
6307339 Bi-directionally dynamically braked gate crossing mechanism controllerMar 23, 99Oct 23, 01[B61L]
6202564 Double end derailOct 05, 98Mar 20, 01[B61F]
6178893 Adjustable hinged derailJan 19, 99Jan 30, 01[B61F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0022,882 Hinged derail with assisted manual lifting and method for constructingAbandonedJul 26, 06Jan 31, 08[B61K]
5653058 Railroad gate arm swivel adapter spring assemblyExpiredNov 17, 95Aug 05, 97[E05D]
4386751 Switch point guardExpiredApr 06, 81Jun 07, 83[E01B]

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