Electronic horn with spiral deflecting walls coupled to a truncated cone structure

US4689609A · kind A · utility

Inventors

• Clyde Ko · Ada, US
• Darrel A. Dolph · Hersey, US

Key dates

• Filing date: Dec 4, 1985
• Grant date: Aug 25, 1987
• Expiry date: Dec 4, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G10K9/13
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

An electronic horn of compact dimensions. Oscillator circuits coupled to a mixing node produce a multiple frequency signal used to drive a horn transducer. One horn replaces the two horns used in the prior art. A reverberating chamber in close proximity to the transducer includes a cone shaped structure having multiple spiraling reflecting walls connected to the convex surface of the cone. Sound waves emitted by the transducer reverberate within the chamber as they bounce off the reflecting walls.