The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2009
Filed:
Apr. 07, 2004
Richard Wilhelm Janse Van Rensburg, Cambridge, GB;
Robert Gordon Maurice Selby, Herts, GB;
Francoise Florence Dufour, London, GB;
Justin Rorke Buckland, Cambridge, GB;
John Matthew Somerville, Hertfordshire, GB;
Richard Wilhelm Janse Van Rensburg, Cambridge, GB;
Robert Gordon Maurice Selby, Herts, GB;
Francoise Florence Dufour, London, GB;
Justin Rorke Buckland, Cambridge, GB;
John Matthew Somerville, Hertfordshire, GB;
The Technology Partnership PLC, Melbourn, Royston, GB;
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.