Patents by Inventor Glenn J. Johnson

Glenn J. 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).

  • Bucky drive system
    Patent number: 5305369
    Abstract: An improved bucky drive utilizes a reversible rotary motor which drives a screw received in a nut fixed to a bucky grid. A integrated control circuit board for the motor insures that the motor is quickly operated. In other features, the motor is a DC motor with a position sensor. A transistor speed control is utilized. The bucky system may be operated in either a semi-automatic or an automatic mode. The speed of the grid may be controlled. Further, other operational parameters of the system may also be controlled.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: April 19, 1994
    Assignee: Material Control, Inc.
    Inventors: Glenn J. Johnson, John Pischl