Patents by Inventor David C Sexton

David C Sexton 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).

  • Arrangement for damping of structural resonance
    Patent number: 7013832
    Abstract: A hull (11) has mounted thereon a number of accelerometers (20) arranged to provide a data signal corresponding to movement or vibration of the hull (11) to which each is fixed. The hull (11) and/or a thrust block (18) has mounted thereon a number of mass dampers (21) that are controlled by a detector (23) arranged between the accelerometers (20) and mass dampers (21). The detector (23) calculates from the data signal generated by the accelerometers (20) different modes of resonance so as to determine the onset of the excitation of a particular resonance mode and controls the mass dampers (21) so as to generate forces to selectively dampen the resonance mode.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: March 21, 2006
    Assignee: Bae Systems plc
    Inventors: David C Sexton, Frederick A Johnson, Malcolm a Swinbanks
  • Arrangement for damping of structural resonance
    Publication number: 20030203685
    Abstract: A hull (11) has mounted thereon a number of accelerometers (20) arranged to provide a data signal corresponding to movement or vibration of the hull (11) to which each is fixed. The hull (11) and/or a thrust block (18) has mounted thereon a number of mass dampers (21) that are controlled by a detector (23) arranged between the accelerometers (20) and mass dampers (21). The detector (23) calculates from the data signal generated by the accelerometers (20) different modes of resonance so as to determine the onset of the excitation of a particular resonance mode and controls the mass dampers (21) so as to generate forces to selectively dampen the resonance mode.
    Type: Application
    Filed: October 22, 2002
    Publication date: October 30, 2003
    Inventors: David C Sexton, Frederick A Johnson, Malcolm A Swinbanks