Patents by Inventor Marco Adrianus Hendrikus Koevoets

Marco Adrianus Hendrikus Koevoets has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PANEL-ACOUSTIC TRANSDUCER COMPRISING AN ACTUATOR FOR ACTUATING A PANEL, AND SOUND-GENERATING AND/OR RECORDING DEVICE
    Publication number: 20090034776
    Abstract: A panel-acoustic transducer comprises a plate-like actuator (4) and a panel (5). The panel (5) has two substantially perpendicular axes of symmetry (AS,Al). The plate-like actuator (4) is coupled to the panel in such a way that: —the actuator (4) is coupled to the panel substantially symmetrically with respect to both symmetry axes (AS,Al) of the panel (4); the plate-like actuator (4) is so arranged that, in operation, at least the first five odd excitation modes ((1,1), (3,1), (1,3), (3,3), (5,1)), in order of increasing frequency, are actuated with alternating signs. Cusps in the power spectrum of the transducer are thereby prevented.
    Type: Application
    Filed: July 21, 2005
    Publication date: February 5, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Georgo Zorz Angelis, Martijn Roger La Grange, Bert Roozen, Rick Scholte, Marco Adrianus Hendrikus Koevoets, Abram Jan Den Hamer