发明名称 Train warning system
摘要 A compact railroad/highway crossing motorist warning device comprising; a rail track mounted pressure sensor switch assembly which timely activates and deactivates a radio frequency transmitter beacon located upon the crossbuck at the rail crossing, the beacon transmits recordable audio and video signals and: a series of mobile sympathetic radio signal receiver units, for highway motor in vehicle and in locomotive application, the in motor vehicle receiver is hardwired to the motor vehicle and the in locomotive receiver has an event recording means attached.
申请公布号 US5729213(A) 申请公布日期 1998.03.17
申请号 US19950517188 申请日期 1995.08.21
申请人 FERRARI, JOHN S.;MCFARLAND, DAVID S. 发明人 FERRARI, JOHN S.;MCFARLAND, DAVID S.
分类号 B61L29/24;B61L29/28;G08G1/0962;G08G1/16;(IPC1-7):G08G1/00 主分类号 B61L29/24
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