IMPROVEMENTS IN OR RELATING TO ALCOHOL DETECTION DEVICES

An alcohol detection device for controlling the ignition circuit of a vehicle. The device incorporates an alcohol sensor (10) within an open ended body (21) to enhance evaporation of condensation within the body (21). Also mounted in the body (21) is a breath pressure operative switch (25) to operat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	RUGIS, JOHN WALTER, DRUMMOND, GRAHAM JOHN
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES INSTRUMENTATION OR DASHBOARDS FOR VEHICLES INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICS TESTING TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	An alcohol detection device for controlling the ignition circuit of a vehicle. The device incorporates an alcohol sensor (10) within an open ended body (21) to enhance evaporation of condensation within the body (21). Also mounted in the body (21) is a breath pressure operative switch (25) to operate in conjunction with the sensor (10). The outputs from the sensor (10) and the switch (25) are fed to an electronic circuit latching means (19) controlling a short provided on a vehicle's ignition circuit. An intending driver exhales into the body (21) a sufficient amount to activate the pressure switch (25) and in so doing provide a breath sample for the sensor (10). A time delay circuit (16) is preferably provided whereby the pressure switch (25) must be closed for a time period commensurate to that of the timer (16) to provide an output signal to the latching means (19).