Pulsed tire pressure monitor
First Claim
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1. AN ALARM SYSTEM FOR A PNEUMATIC TIRE ON A VEHICLE WHICH COMPRISES A PAIR OF ELECTROMAGNETIC WAVE TRANSMITTERS EACH HAVING DIRECTIONAL CHARACTERISTICS DIFFERENTLY ORIENTED ONE WITH RESPECT TO THE OTHER AND MOUNTED FOR ROTATION WITH SAID TIRE, AN EXCITATION CIRCUIT INCLUDING AN ACTUATING SWITCH OPERABLE UPON THE OCCURRENCE OF PRESSURE IN SAID TIRE BELOW A PREDETERMINED LEVEL ALTERNATELY FOR ENERGIZING FIRST ONE AND THEN THE OTHER OF SAID TRANSMITTERS TO ESTABLISH AN AVERAGE OMNI-DIRECTIONAL FIELD, AND A RECEIVE SYSTEM INCLUDING INDICATING MEANS CARRIED BY SAID VEHICLE MOUNTED FOR RECEPTION OF SIGNALS OF SAID OMNIDIRECTIONAL FIELD FOR ACTUATING SAID INDICATING MEANS UPON OCCURRENCE OF LOW TIRE PRESSURE.
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1 Claim
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1. AN ALARM SYSTEM FOR A PNEUMATIC TIRE ON A VEHICLE WHICH COMPRISES A PAIR OF ELECTROMAGNETIC WAVE TRANSMITTERS EACH HAVING DIRECTIONAL CHARACTERISTICS DIFFERENTLY ORIENTED ONE WITH RESPECT TO THE OTHER AND MOUNTED FOR ROTATION WITH SAID TIRE, AN EXCITATION CIRCUIT INCLUDING AN ACTUATING SWITCH OPERABLE UPON THE OCCURRENCE OF PRESSURE IN SAID TIRE BELOW A PREDETERMINED LEVEL ALTERNATELY FOR ENERGIZING FIRST ONE AND THEN THE OTHER OF SAID TRANSMITTERS TO ESTABLISH AN AVERAGE OMNI-DIRECTIONAL FIELD, AND A RECEIVE SYSTEM INCLUDING INDICATING MEANS CARRIED BY SAID VEHICLE MOUNTED FOR RECEPTION OF SIGNALS OF SAID OMNIDIRECTIONAL FIELD FOR ACTUATING SAID INDICATING MEANS UPON OCCURRENCE OF LOW TIRE PRESSURE.
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Current AssigneeRobert L. Mills
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Original AssigneeRobert L. Mills
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InventorsMills, Robert L.
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Application NumberUS04/011,694Time in Patent Office1,870 DaysField of SearchUS Class Current340/447CPC Class CodesB60C 23/009 having wheels on a trailerB60C 23/0433 Radio signals
