Patents by Inventor Frank F. DiMaggio

Frank F. DiMaggio 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: 4913004
    Abstract: An electronic powershift control system for an implement transmission having a plurality of selectively operated electrically controlled hydraulic powershift clutches. The system includes a manually positionable gear selector connected to electrical control circuitry. The electrical control circuitry receives input shift signals from the gear selector indicative of the shift desired and, in response, produces output shift signals for operating various hydraulic powershift clutches over a predetermined time to effect the desired shift. The electrical circuitry further incorporates a feed back loop which allows the circuitry to monitor shift performance effected during the desired shift and, if necessary, adjust the predetermined time of powershift clutch operation the next time the same shift is selected by the operator.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: April 3, 1990
    Assignee: J. I. Case Company
    Inventors: Dale W. Panoushek, Ernest A. Kreitzberg, Frank F. DiMaggio