Gas flow generator
AssigneeThe Technology Partnership PLC
InventorsRichard Wilhelm Janse Van Rensburg, Robert Gordon Maurice Selby, Francoise Florence Dufour, Justin Rorke Buckland, John Matthew Somerville
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Abstract
A gas flow generator comprising: an ultrasonic driver comprising a piezoelectric or electrostrictive transducer mounted on a substrate, operation of the transducer being arranged to cause the driver to bend; a first membrane disposed on or formed integrally with the transducer or the substrate; and a second membrane mounted substantially parallel with the driver and spaced a given distance therefrom, one of the membranes being perforate, whereby ultrasonic bending of the driver on actuation of the transducer causes a gas flow through the perforate membrane.
Claims11
A gas flow generator comprising:
- an ultrasonic driver comprising a piezoelectric or electrostrictive transducer mounted on a substrate, operation of the transducer being arranged to cause the driver to bend;
- a first membrane disposed on or formed integrally with the transducer or the substrate;
- and
- a second membrane mounted substantially parallel with the driver and spaced a given distance therefrom,
- one of the membranes being perforate, whereby ultrasonic bending of the driver on actuation of the transducer causes a gas flow through the perforate membrane.
Dependencies are inferred from the claim text.