Electric or electronic sensors for detecting derailments, track integrity, number of wheels and/or axles, temperature, wind speed and presence of dragging equipment for use in the railroad industry; and related electronic control/communications systems composed primarily of user interfaces, radios, circuitry, batteries, surge suppressors, and battery chargers

'and/or':13 'axl':14 'batteri':41,45 'charger':46 'circuitri':40 'compos':34 'control/communications':32 'derail':7 'detect':6 'drag':21 'electr':1 'electron':3,31 'equip':22 'industri':28 'integr':9 'interfac':38 'number':10 'presenc':19 'primarili':35 'radio':39 'railroad':27 'relat':30 'sensor':4 'speed':17 'suppressor':43 'surg':42 'system':33 'temperatur':15 'track':8 'use':24 'user':37 'wheel':12 'wind':16

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