Patents by Inventor Lawrence J. Perfect

Lawrence J. Perfect 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).

  • Motion system including actuator assembly
    Patent number: 5511979
    Abstract: An actuator assembly comprising a pair of interconnected extensible actuators defining two sides of a triangle structure, and a linkage constrained to move with the actuators such that differences in extension of the actuators cause a change in position of the linkage. Changes in position of the linkage are detected to enable relative actuator extensions to be monitored.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: April 30, 1996
    Assignee: Hughes Rediffusion Simulation Limited
    Inventors: Lawrence J. Perfect, Peter Waller