Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Robert Gordon Maurice Selby0
Francoise Florence Dufour0
John Matthew Somerville0
Justin Rorke Buckland0
Richard Wilhelm Janse Van Rensburg0
Date of Patent
June 23, 2009
0Patent Application Number
105517880
Date Filed
April 7, 2004
0Patent Citations Received
Patent Primary Examiner
Patent 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.
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