|
US6392553B1
|
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Signal interface module
|
|
US6064315A
|
|
Zero speed transducer
|
|
US5924652A
|
|
Island presence detected
|
|
US5769364A
|
|
Coded track circuit with diagnostic capability
|
|
AU5627996A
|
|
Cab signal sensor with noise suppression
|
|
US5628479A
|
|
Vital wheel detector
|
|
US5586736A
|
|
Cab signal sensor with noise suppression
|
|
US5628478A
|
|
Cab signal pickup system with motor noise reduction
|
|
US5533695A
|
|
Incremental train control system
|
|
US5507434A
|
|
Clamp mount for concrete ties
|
|
US5436787A
|
|
Surge arrestor unit
|
|
US5340062A
|
|
Train control system integrating dynamic and fixed data
|
|
US5149025A
|
|
Detection of overheated railroad wheel and axle components
|
|
US5170970A
|
|
Method and apparatus for improving rail shunts
|
|
US5060890A
|
|
Detection of overheated railroad wheel and axle components
|
|
US4928910A
|
|
Detection of overheated railroad wheel and axle components
|
|
US4868538A
|
|
Random signature island circuit
|
|
US4934633A
|
|
Crossing control unit
|
|
CA1014626A
|
|
Digital motion detector
|
|
US4026505A
|
|
Variable high pass coupler
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