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Vehicle tire pressure alarm system

  • US 3,215,978 A
  • Filed: 12/28/1961
  • Issued: 11/02/1965
  • Est. Priority Date: 12/28/1961
  • Status: Expired due to Term
First Claim
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9. IN A VEHICLE HAVING AN OPERATOR'"'"''"'"'S COMPARTMENT AND PNEUMATIC TIRES, A TIRE ALARM SYSTEM COMPRISING:

  • SIGNAL GENERATOR MEANS AT VARI OUS PNEUMATIC TIRES OF THE VEHICLE, EACH GENERATOR MEANS PRODUCING A VARYING MAGNETIC FIELD SIGNAL IN RESPONSE TO A CHANGE OF CONDITION TO A PREDETERMIEND EXTENT IN THE TIRE ASSOCIATED THEREWITH;

    A PORTABLE RECEIVER IN SAID OPERATOR'"'"''"'"'S COMPARTMENT, SAID RECEIVER BEING RESPONSIVE TO THE SIGNALS PRODUCED BY SAID GENERATOR MEANS AND COUPLED TO AN ALARM TO OPERATE SAID ALARM IN RESPONSE TO RECEPTION OF SAID SIGNALS;

    SIGNAL PICKUP MEANS IN SAID VEHICLE AND CONNECTED TO SAID RECEIVER WHEN SAID RECEIVER IS SAID COMPARTMENT AND COUPLING SIGNALS FROM SAID GENERATOR MEANS

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