Csir

Frederik A Koch

Philip Wayne Loveday

Jeremy Rex Wallis

David Ronald Jones

Robert Henry Sinclair

Jonathan Du Pre Le Roux

Michael Yuri Shatalov

Johannes Nicolaas Bothma

A displacement generator ( ) has a housing ( ) defining a chamber ( ) containing an incompressible liquid ( ). A port ( ) of the housing ( ) is closed by a movable member ( ). Within the chamber ( ), opposing, convex, flexible walls ( ) form an internal modulating chamber ( ), which optionally contains a compressible gas. Opposed ends of the walls ( ) can be displaced toward and away from each other by a motion transducer, e.g. a stack of ceramic piezoelectric members ( ), respectively to pressurize and depressurize the chamber ( ) and thus to displace the member ( ) to and fro to form an output of the displacement generator.

Generating displacement and theroacoustic refrigerator

Growing community of inventors

Warmbaths, South Africa

Frederik A Koch