Patents by Inventor Dana R. Townsend

Dana R. Townsend 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: 4554506
    Abstract: A test probe employing a buckling beam array for testing integrated circuits. A pair of identical sets of guides are positioned on either side of a centerpost to align the buckling beams. In one embodiment the holes in one set of guides is offset by a key to induce prebow in the beams. In another embodiment prebow is induced by a floating asymmetric separator positioned on the centerpost between the guide sets. When a force is applied to the probe, the beams deflect in the direction but to different extents so that a uniform force is applied to the surface of the IC irrespective of variations in height.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: November 19, 1985
    Assignee: International Business Machines Corporation
    Inventors: Louis H. Faure, Dana R. Townsend, Thomas J. Walsh