Patents by Inventor John Christopher Alden

John Christopher Alden 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).

  • Manipulator for automatic test equipment with active compliance
    Patent number: 5949002
    Abstract: A manipulator for an automatic test equipment test head. The manipulator includes a plurality of motors that are coupled with load cells. A controller provides motor control signals based on the output of the load cells. The manipulator may be operated in compliant mode in which the motors drive the manipulator to move in response to external forces. The manipulator can be used in conjunction with a docking system in which a mechanical interface between the test head and the handling device defines the position of the test head relative to the handling device.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: September 7, 1999
    Assignee: Teradyne, Inc.
    Inventor: John Christopher Alden