Patents by Inventor Ronald F. Messer

Ronald F. Messer 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).

  • Shock resistant accelerometer for implantable medical device
    Patent number: 5885471
    Abstract: The present invention relates to accelerometer assemblies for implantable medical devices such as pacemakers, IPGs, PCDs, defibrillators, ICDs and the like. The accelerometer assembly of the present invention comprises a beam that deflects in response to being subjected to an externally provided force. Deflection of the beam generates a voltage in a piezoelectric material disposed in the assembly. At least one stop is provided to limit the vertical range of motion through which the beam may deflect to prevent failure, fracturing or breakage of the beam resulting from excessive deflection of the beam that might otherwise occur were the stop not present.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: March 23, 1999
    Assignee: Medtronic, Inc.
    Inventors: David A. Ruben, Mark E. Henschel, Larry R. Larson, Roy Inman, Louis A. Molinari, Joan A. O'Gara, Ronald F. Messer