Delayed action light switch device

Claim 1

IN AN AUTOMATIC MOTOR VEHICLE LIGHT CONTROL SYSTEM OF THE TYPE PROVIDING DELAYED DEENERGIZATION OF THE VEHICLE HEADLIGHTS FOR A PREDETERMINED PERIOD OF TIME AFTER THE VEHICLE ENGINE HAS BEEN SHUT OFF, A DELAY SWITCH SYSTEM COMPRISING A CHAMBER HAVING A FLEXIBLE DIAPHRAGM MOUNTED THEREIN, MEANS TO CONNECT SAID CHAMBER AT TIMES TO THE INTAKE MANIFOLD OF THE ENGINE WHILE THE ENGINE IS RUNNING, WHEREBY TO FLEX SAID DIAPHRAGM, A NORMALLY OPEN SWITCH MOUNTED ADJACENT SAID CHAMBER AND HAVING AN EXTERNALLY PROJECTING OPERATING PLUNGER, A LOOP-SHAPED LEVER HAVING A U-SHAPED END PORTION PROVIDED WITH AN OUTER ARM, MEANS PIVOTALLY SUPPORTING SAID U-SHAPED END PORTION ON SAID SWITCH WITH SAID OUTER ARM IN A POSITION TO ENGAGE SAID PLUNGER AND CLOSE THE SWITCH RESPONSIVE TO ROTATION OF THE LEVER, SAID LEVER HAVING A FREE OUTER PORTION OPPOSITE SAID U-SHAPED END PORTION, A PLUNGER MEMBER SLIDABLY MOUNTED IN A WALL OF THE CHAMBER AND CONNECTED AT ITS INNER END TO SAID DIAPHRAGM, A TRANSVERSELY EXTENDING ARM ON THE OUTER END OF SAID LAST-NAMED PLUNGER MEMBER LOCATED IN A POSITION TO ENGAGE SAID FREE OUTER PORTION OF THE LEVER AND TO ROTATE THE LEVER RESPONSIVE TO FLEXURE OF THE DIAPHRAGM, WHEREBY TO CLOSE SAID SWITCH, AND RESTRICTED VENT MEANS CONNECTING THE CHAMBER TO ATMOSPHERE TO PROVIDE DELAYED RELEASED OF THE DIAPHRAGM WHEN THE ENGINE IS SHUT OFF.