Patents by Inventor Leo Z. Hayes

Leo Z. Hayes 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: 4768391
    Abstract: An apparatus and method for the testing and evaluation of numerous actuators having different load characteristics. The apparatus comprises a fixed frame, having a first and second lever arms pivotally attached to the fixed frame. An expandable, contractible spring element is pivotally connected between the first and the second lever arms functioning to transmit forces between the first and the second lever arms. A force is applied to the second lever arm and an actuator under test which is pivotally attached to the first lever arm constrains displacement of the first lever arm. A computer measures and records the displacements of the first and the second lever arms from a known starting position.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: September 6, 1988
    Assignee: Rockwell International Corporation
    Inventor: Leo Z. Hayes