Patents by Inventor Hal R. Johnson

Hal R. Johnson 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).

  • Engine braking system using alternator stator windings
    Patent number: 5895338
    Abstract: The alternator on an engine has a set of stator coils which are connected to supply current to power accessories and current for a battery charger when the engine is running. When the ignition is turned off, a braking switch is closed which short circuits the stator coils. The resulting high current in the stator coils produces a braking torque on the engine shaft that brings it and any attached implement to a rapid halt.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 20, 1999
    Assignee: Kohler Co.
    Inventors: Michael J. Dins, Michael R. Kleczewski, Robert K. Lindorfer, Jr., Hal R. Johnson