Acoustic unit base for electropneumatic horns
AssigneeLeonardo Beltrame
InventorsLeonardo Beltrame, Attilio Granziera
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Abstract
An improved acoustic unit base for electropneumatic horns, of the type comprising a main body peripherally seamed to an end piece with a diaphragm therebetween. Said main body is formed by connecting together a first and a second member of deep-drawn sheet metal, the first comprising a central hole and the second forming a cylindrical seat for receiving a bush with a lipped opening which rests on the diaphragm.
Claims13
An improved acoustic unit base for electropneumatic horns comprising a main body peripherally seamed to an end piece with a diaphragm therebetween, said main body being formed by a first and a second member of deep-drawn sheet metal, said first member comprising a peripheral portion defining a central hole and said second member forming a cylindrical seat, said peripheral portion and cylindrical seat defining a cavity therebetween, a bush having a lip projecting through said central hole and resting on the diaphragm, and said bush further including a portion clampingly retained in said cavity between said peripheral portion and said cylindrical seat.
An improved acoustic unit base for electropneumatic horns comprising a main body peripherally seamed to an end piece with a diaphragm therebetween, said main body being formed by a first and second member, said first member comprising a peripheral portion defining a central hole and said second member forming a cylindrical seat, said peripheral portion and cylindrical seat defining a cavity therebetween, a bush having a lip projecting through said central hole and resting on the diaphragm, and said bush further including a portion clampingly retained in said cavity between said peripheral portion and said cylindrical seat.
Dependencies are inferred from the claim text.