Patents by Inventor Way D. Woo

Way D. Woo 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: 4357560
    Abstract: Method and apparatus is disclosed for driving the take up and supply spools of a web transport system. The apparatus includes a pair of direct current motors, one for each spool, and a circuit for regulating the current in the two motors. The circuit senses the counter EMF across the takeup motor, and accordingly controls the current in the supply motor, in order to apply a proper dragging torque to the supply spool. In the event of a loss of power to the web transport, the two spools are brought to a stop in a controlled manner by electronic means.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: November 2, 1982
    Assignee: Dennison Manufacturing Company
    Inventors: Way D. Woo, William Steddom