Patents by Inventor Dennis P. Gregory

Dennis P. Gregory 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).

  • Patent number: 4991443
    Abstract: A rapid exchange vacuum fixture vibration system adapted for use with a vibration testing machine designed to move a surface to induce vibration in a fixture attached to a unit under test, includes an adapter plate attached, at a first surface, to the surface of the vibration testing machine. A vacuum panel assembly, housing a vacuum pump, is included for creating a vacuum between the upper surface of the adapter plate and the lower surface on the fixture whereby the fixture and the unit under test attached thereto is secured to the adapter plate and thereby secured to the vibration testing machine without using bolts or other hardware for clamping .
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: February 12, 1991
    Assignee: Hughes Aircraft Company
    Inventors: David L. Fowler, Dennis P. Gregory