Patents by Inventor David P. Wick

David P. Wick 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: 4242038
    Abstract: An apparatus and method for orienting a substantially flat wafer are described. The wafer preferably has two flat registration edges of unequal length. Upon contact of any edge portion of the wafer with a sensor projecting forwardly from one registration surface, air jets are activated to rapidly rotate the wafer one way until the longer of its two registration edges contacts a sensor projecting forwardly from another registration surface. Then air jets are activated to slowly rotate the wafer the opposite way until said longer registration edge contacts another sensor associated with said other registration surface to effect precise registration of the wafer without overshoot as all three sensor are concurrently contacted and activated. Wafer movement by the jets thereupon terminates and vacuum is applied continuously to hold the wafer in place while the work operation is performed thereon.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: December 30, 1980
    Assignee: International Business Machines Corporation
    Inventors: Hugo A. E. Santini, David P. Wick