Seat belt controlled warning system

Claim 1

ELECTRICAL SAFETY DEVICE WHICH PERMITS THE STARTING OF A VEHICLE MOTOR ONLY UPON PREVIOUS SECURING OF A SAFETY BELT UNIT HAVING A BUCKLE WITH A METALLIC CLAMPING MEMBER AT THE END OF A FIRST STRAP MEMBER SHAPED TO RECEIVE AND RELEASABLY TO HOLD A METALLIC CLAMPED MEMBER AT THE END OF A SECOND STRAP MEMBER AND HAVING A RECESS FOR ENGAGEMENT OF THE CLAMPING MEMBER, COMPRISING: TWO TERMINAL MEANS FOR CONNECTION TO MEANS FOR OPENING AND CLOSING AN OPERATION EFFECTING CIRCUIT OF SAID MOTOR; FIRST FLEXIBLE CONDUCTOR MEANS LEADING FROM ONE OF SAID METALLIC BUCKLE MEMBERS ALONG ONE OF SAID STRAP MEMBERS TO THE FIRST ONE OF SAID TERMINAL MEANS; A SPRING CONTACT MOUNTED ON SAID CLAMPED MEMBER INSULATED THEREFROM, AND INCLUDING A PORTION EXTENDING INTO SAID RECESS FOR MAKING CONTACT WITH SAID CLAMPING MEMBER UPON INTERENGAGEMENT OF CLAMPING AND CLAMPED MEMBERS; SECOND FLEXIBLE CONDUCTOR MEANS LEADING ALONG SAID SECOND STRAP MEMBER FROM SAID SPRING CONTACT TO THE SECOND ONE OF SAID TERMINAL MEANS; AND WHEREBY INTERLOCKING OF AND HENCE METALLIC CONTACT BETWEEN THE BUCKLE MEMBERS CAUSES ELECTRIC CONNECTION OF SAID TERMINAL MEANS THROUGH BOTH CLAMPING AND CLAMPING MEMBERS, PERMITTING THE STARTING OF THE MOTOR.