Flat tire indicator

Claim 1

A SWITCH FOR USE IN A TIRE-DEFLATION SIGNALING CIRCUIT COMPRISING A SUPPORTING PLATE ADAPTED FOR ATTACHMENT TO THE FRAME OF A VEHICLE, A SHELF EXTENDING PERPENDICULARLY FROM THE FACE OF SAID PLATE, AN ELONGATE, FLEXIBLE BAR SECURED AT ONE END TO THE OUTER EDGE OF SAID SHELF, IN GENERAL PARALLELISM WITH SAID PLATE AND EXTENDING BEYOND THE END OF SAID PLATE, A GROUND-WIPING PAD OF ORGANIC MATERIAL SECURED TO AND EXTENDING BEYOND THE OUTER END OF SAID BAR, A FIRST CONTACT SLIDABLY MOUNTED IN A BORE IN SAID PLATE, SPRING MEANS ON OPPOSITE SIDES OF SAID PLATE ENGAGING SAID CONTACT TO OPPOSE SLIDING MOVEMENT IN EITHER DIRECTION, A SECOND CONTACT FIXEDLY SECURED IN SAID BAR, ELECTRICALLY INSULATED THEREFROM AND ARRANGED TO ENGAGE SAID FIRST CONTACT ON FLEXURE OF SAID BAR, AND A RESILIENT BUFFER STOP ON SAID PLATE BELOW SAID FIRST CONTACT POSITIONED FOR CONTACT BY SAID BAR UPON FLEXURE OF SAID BAR.