Patents by Inventor Jim M. Bogdanowicz

Jim M. Bogdanowicz 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).

  • Magnetic brake
    Patent number: 8857578
    Abstract: A magnetic brake has an outer stator surrounding an inner stator with a circumferential slot between the outer stator and the inner stator. A coil is provided in the inner stator adjacent to the circumferential slot. A drag plate is attached to a rotatable shaft extending centrally through the inner stator. A drag ring joined to the drag plate extend into the circumferential slot. The drag ring may be an annular cylindrical ring section separate from the drag plate. Vent holes pass through the inner stator adjacent and parallel to the shaft. The magnetic brake uses both hysteresis and eddy current braking.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: October 14, 2014
    Assignee: Technical Film Systems, Inc.
    Inventors: Jim M. Bogdanowicz, Bruce W. Keller, Manfred G. Michelson, Markus G. Michelson