Patents by Inventor Dennis A. McNulty

Dennis A. McNulty 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).

  • Position sensing differential transformer system with means to convert the output to an absolute value
    Patent number: 4109200
    Abstract: A stator lamination compression mechanism simultaneously monitors the axial length of a series of laminations to be used in an electric motor. A linear variable differential transformer provides a movable coupling element connected to a sensing member monitoring the axial length of the compressed laminations. A specially designed sensing circuit responds to variations in magnitude and phase of a single ended output signal provided by the differential transformer and continuously tracks the movement of the coupling element. The monitor provides warnings when the axial length varies beyond predetermined selected magnitudes.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: August 22, 1978
    Assignee: A. O. Smith Corporation
    Inventor: Dennis A. McNulty