Patents by Inventor Eric R. Marsh

Eric R. Marsh 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).

  • Replicated-in-place internal viscous shear damper for machine structures and components
    Patent number: 5799924
    Abstract: A novel means for providing an internal damping mechanism for a system with structural load supporting members that may be subject to time-varying loads, where the structure's structural members have rough holes formed in them, either by casting, drilling, or welding pipe, where the holes can be any shape, but the ideal shape and location maximizes the product of the perimeter of the shape and the distance from the neutral axes to the neutral axis of the structure, so a smooth surfaced shear member, with a diameter several millimeters smaller than the hole and a surface finish on the order of 0.5 micron R.sub.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: September 1, 1998
    Assignee: AESOP, Inc.
    Inventors: Alexander H. Slocum, Eric R. Marsh, Douglas H. Smith