Patents by Inventor Joel G. Ivy

Joel G. Ivy 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).

  • Method and apparatus for regulating electric motor armature currents
    Patent number: 4292572
    Abstract: A method and apparatus are described for regulating the armature currents of a plurality of electric motors connected to share the same load, but having separate power sources. The described method and apparatus thereby operate to enhance the load-sharing characteristics of these motors. Each of the motors is provided with armature currents by a separate generator set so that each motor is connected in an individual Ward-Leonard type system. The fields of each of the motors are excited separately from the aforementioned separate power sources. The armature currents for each of the motors are individually sensed, and values corresponding to the armature current values are derived. The latter analog values are compared with an average value for all of the armature currents.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: September 29, 1981
    Assignee: Dresser Industries, Inc.
    Inventor: Joel G. Ivy