Patents by Inventor John D. Heilmann

John D. Heilmann 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).

  • Active dual reaction mass absorber for vibration control
    Patent number: 5884736
    Abstract: An active vibration absorber including a frame connected to a structure to be controlled and at least two reaction mass elements operatively connected to the frame. Each of the reaction mass elements is independently movable with respect to said frame. The absorber includes a force generating member for controlling relative movement between the reaction mass elements for damping vibration of the structure. The inventive dual reactive mass absorber requires less control force to produce the same vibration attenuation as conventional single reactive mass absorbers.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: March 23, 1999
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Ricardo A. Burdisso, John D. Heilmann