Induction signal system

Claim 1

IN COMBINATION WITH A VEHICLE HAVING A DUAL WHEEL MOUNTED TO ROTATE ABOUT AN AXLE AND AN INFLATABLE TIRE ON EACH RIM OF SAID WHEEL, A PRESSURE-RESPONSIVE, SINGLE-POLE DOUBLE-THROW SWITCH FOR EACH TIRE MOUNTED ON SAID WHEEL, EACH SWITCH INCLUDING A MOVABLE CONTACTOR BIASED AWAY FROM ONE TERMINAL AND TOWARD ENGAGEMENT WITH THE OTHER TERMINAL OF ITS SWITCH BUT MAINTAINED IN ENGAGEMENT WITH SAID ONE TERMINAL BY PRESSURE VALUES WITHIN ITS ASSOCIATED TIRE ABOVE A PREDETERMINED MINIMUM, A FIRST ELECTRICALLYACTIVATED SIGNAL DEVICE CARRIED ON THE VEHICLE, A SECOND ELECTRICALLY-ACTIVATED SIGNAL DEVICE CARRIED ON THE VEHICLE, A FIRST ARMATURE-WOUND COIL STATIONARILY MOUNTED ON SAID VEHICLE ADJACENT SAID AXLE AND ELECTRICALLY ASSOCIATED WITH SAID FIRST SIGNAL DEVICE TO ENERGIZE THE SAME WHENEVER A CURRENT PULSE IS INDUCED IN SAID FIRST COIL, A SECOND ARMATURE-WOUND COIL STATIONARILY MOUNTED ON SAID VEHICLE ADJACENT SAID AXLE AND ELECTRICALLY ASSOCIATED WITH SAID SECOND SIGNAL DEVICE TO ENERGIZE THE SAME WHENEVER A CURRENT PULSE IS INDUCED IN SAID SECOND COIL, SAID COILS BEING EQUIDISTANT FROM SAID AXLE AND ANGULARLY SPACED FROM EACH OTHER ABOUT SAID AXLE, A PERMANENT MAGNET STATIONARILY MOUNTED AT THE SAME DISTANCE FROM SAID AXLE AND ANGULARLY SPACED FROM SAID COILS, A FIRST TRAVELLING, ARMATURE-WOUND COIL, A SECOND TRAVELLING, ARMATURE-WOUND COIL AND A THIRD TRAVELLING, ARMATURE-WOUND COIL MOUNTED TO TRAVEL WITH SAID WHEEL, UPON ROTATION OF SAID WHEEL, IN A PATH CLOSELY ADJACENT SAID STATIONARY COILS, SAID TRAVELLING COILS BEING SO ANGULARLY SPACED THAT, WHEN SAID FIRST TRAVELLING COIL REGISTERS WITH SAID MAGNET, SAID SECOND TRAVELLING COIL WILL REGISTER WITH SAID FIRST STATIONARY COIL AND SAID THIRD TRAVELLING COIL WILL REGISTER WITH SAID SECOND STATIONARY COIL, AND CONDUCTOR MEANS CONNECTING THE WINDINGS OF SAID FIRST AND SECOND TRAVELLING COILS IN SERIES WITH EACH OTHER AND, THROUGH SEPARATE RESISTORS, WITH SAID ONE TERMINAL OF EACH OF SAID SWITCHES IN PARALLEL, AND CONNECTING THE WINDINGS OF SAID FIRST AND THIRD TRAVELLING COILS IN SERIES WITH EACH OTHER AND WITH THE OTHER TERMINAL OF EACH OF SAID SWITCHES IN PARALLEL.