Patents by Inventor Robert A. Jaquay

Robert A. Jaquay 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).

  • Oil compression compensation system
    Patent number: 4909060
    Abstract: A pre-set fluid actuator for setting the roll gap of a rolling mill having a transducer for detecting actuator movement and an electrohydraulic servovalve for controlling its position, a control system for compensating for the compressibility of the actuator fluid caused by the rolling force in a manner that requires no operation of the servovalve by creating a pre-set anticipating compression compensation signal and reducing the output of this signal by the output of a signal representing the actual fluid compression caused by the actual rolling force.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: March 20, 1990
    Assignee: United Engineering, Inc.
    Inventor: Robert A. Jaquay