Patents by Inventor David Houston Vandergriff

David Houston Vandergriff 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).

  • Hinge assembly
    Patent number: 5943739
    Abstract: A hinge assembly having a first leaf, a second leaf and linking member. The first leaf has a contact surface. The second leaf has a first contact surface and a second contact surface. The linking member pivotally connects to the first leaf and to the second leaf. The hinge assembly is capable of moving from a closed position to an open position. In the closed position, the contact surface of the first leaf merges with the first contact surface of the second leaf. In the open position, the contact surface of the first leaf merges with the second contact surface of the second leaf. The hinge assembly can include a seal on the contact surface of the first leaf.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: August 31, 1999
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventor: David Houston Vandergriff