Yamaguchi Electric Ind. Co. Ltd.

Brigade Electronics Plc

Brigade Electronics (UK) Limited

Christopher Hanson-Abbott

Masato Yamashita

Hubert Geoffrey Leventhall

Kelly Sands

A sounder for use in mobile apparatus comprising an electronic signal generator and a electroacoustic transducer to generate an audible sound, wherein the sound comprises continuous repetitions of a pre-determined section of substantially broadband sound.

Sounder for mobile apparatus

A reversing alarm for a vehicle emits an audible signal in the form of pulses of broad band sound when the vehicle is put into reverse gear. The broad band sound allows persons in the vicinity to locate the vehicle, as the human brain is able to process broad band sound to pinpoint the location of the sound source in a way which is not possible with single tone sounds. The alarm is implemented via a simple electronic circuit which uses a zener diode as a signal generatorto generate the broad band sound.

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London, United Kingdom

Christopher Hanson-Abbott