Signal flasher having a heater mounted on a mandril separate from, but adjacent to the expansible pull means

Claim 1

IN A SHUNT TYPE FLASHER OF THE TYPE WHEREIN A RESILIENT VANE HAVING A LINEAR DEFORMATION THEREIN HAS EXPANSIBLE PULL MEANS SECURED UNDER TENSION THERETO WHICH WHEN COLD HOLDS THE VANE IN ONE CIRCUIT CONTROLLING POSITION AND WHEN HEATED PERMITS THE VANE TO SNAP TO A SECOND CIRCUIT CONTROLLING POSITION, THE COMBINATION COMPRISING A FIXED SUPPORT MEANS FOR THE VANE ABOUT WHICH THE VANE PIVOTS WHEN SNAPPING FROM ONE CIRCUIT CONTROLLING POSITION TO THE OTHER, A MANDREL FIXEDLY MOUNTED WITH RESPECT TO SAID SUPPORT MEANS AND EXTENDING PARALLEL TO THE EXPANSIBLE PULL MEANS AND ADJACENT THERETO WHEN THE VANE IS IN SAID FIRST CONTROLLING POSITION, SAID VANE WHEN SNAPPING TO SAID SECOND CONTROLLING POSITION LATERALLY MOVING SAID PULL MEANS AWAY FROM SAID MANDREL, AN ELECTRICAL HEATER INSULATEDLY WOUND ABOUT SAID MANDREL AND CIRCUIT MEANS FOR ENERGIZING SAID HEATER TO HEAT SAID PULL MEANS ONLY WHEN THE VANE IS IN SAID FIRST CIRCUIT CONTROLLING POSITION WHEREBY WHEN SAID HEATER IS ENERGIZED IT IS ADJACENT SAID PULL MEANS AND WHEN IT IS DEENERGIZED AND COOLING IT IS SPACED FROM SAID PULL MEANS.