Patents by Inventor David J. Brace

David J. Brace 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).

  • Piezo integrated flat speakers for automotive interior panels
    Patent number: 6639988
    Abstract: A member for producing an audible sound in a vehicle including a speaker area having an upper surface and a lower surface, the speaker area being located on the member. A piezo bimorph is attached to the speaker area, the piezo bimorph including a first piezoelectric element attached to the upper surface of the speaker area, and a second piezoelectric element attached to the lower surface of the speaker area. An amplifier in electrical communication with the piezo bimorph, the amplifier supplying an electrical field to the piezo bimorph, the piezo bimorph causing the speaker area and the member to vibrate, causing an audible sound.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: October 28, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Mansour Ashtiani, Charles J. Scheib, Emanuele Bianchini, David J. Brace
  • Piezo integrated flat speakers for automotive interior panels
    Publication number: 20020076061
    Abstract: A member for producing an audible sound in a vehicle including a speaker area having an upper surface and a lower surface, the speaker area being located on the member. A piezo bimorph is attached to the speaker area, the piezo bimorph including a first piezoelectric element attached to the upper surface of the speaker area, and a second piezoelectric element attached to the lower surface of the speaker area. An amplifier in electrical communication with the piezo bimorph, the amplifier supplying an electrical field to the piezo bimorph, the piezo bimorph causing the speaker area and the member to vibrate, causing an audible sound.
    Type: Application
    Filed: August 15, 2001
    Publication date: June 20, 2002
    Inventors: Mansour Ashtiani, Charles J. Scheib, Emanuele Bianchini, David J. Brace