Breath alcohol determination

Claim 1

APPARATUS FOR DETERMINING THE AMOUNT OF ALCOHOL IN A PERSON''S BREATH COMPRISING A FIRST INFLATABLE AND ELASTIC CONTAINER HAVING AN INLET ADAPTED TO BE INFLATED TO A SELECTED SIZE BY A PERSON BLOWING HIS BREATH THEREINTO AND FOR EXERTING ON BREATH THEREIN A SELECTED PRESSURE WHEN INFLATED AND EXPANDED TO SAID SELECTED SIZE, A SECOND ELONGATE HOLLOW CONTAINER HAVING A PAIR OF OPPOSITE OPEN ENDS HOUSING THEREIN A QUANTITY OF ALCOHOL SENSITIVE REAGENT WHICH CHANGES COLOR PROGRESSIVELY LENGTHWISE THEREALONG IN RESPONSE TO ALCOHOL VAPOR PRESENT IN GAS PASSED THERETHROUGH AN AMOUNT PROPORTIONAL TO THE AMOUNT OF ALCOHOL VAPOR PRESENT IN SUCH GAS, MEANS SECURING SAID REAGENT IN THE SECOND CONTAINER SO AS TO DEFINE A SELECTED IMPEDANCE TO GAS FLOWING THERETHROUGH, A THIRD INFLATABLE BUT INELASTIC CONTAINER HAVING AN INLET AND A MAXIMUM INFLATABLE VOLUME OF PREDETERMINED CAPACITY, AND MEANS FOR COUPLING THE SECOND CONTAINER IN GAS FLOW RELATION BETWEEN THE FIRST AND THIRD CONTAINER SO THAT BREATH PASSES THROUGH THE SECOND CONTAINER FROM THE FIRST CONTAINER TO THE THIRD CONTAINER AT A SELECTED RATE UNTIL THE THIRD CONTAINER IS FILLED.