Patents by Inventor S. Clark Beard

S. Clark Beard 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).

  • Electric actuator to produce a predetermined force
    Patent number: 6914406
    Abstract: An electric actuator Includes a first plate and a substantially parallel second plate. A linkage system couples the first plate to the second plate such that moving the linkage system toward an over-center position causes the second plate to move away from the first plate. An electric motor is coupled to the linkage system to move the linkage system toward the over-center position. A force transducer is coupled to the actuator to produce a force signal responsive to a force produced by the actuator. A control system is coupled to the electric motor and the force transducer to provide a control signal to the electric motor to move the linkage system to a position that was determined by the control system in response to the force signal in a previous movement of the linkage system.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: July 5, 2005
    Assignee: River Solutions, Inc.
    Inventors: Kenneth R. Wilkes, S. Clark Beard