Patents by Inventor Timothy Matus

Timothy Matus 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).

  • Method and apparatus for welding
    Patent number: 6777649
    Abstract: A method and apparatus for providing welding power is disclosed. It includes a transformer with a primary winding and an output secondary winding. The ac side of a rectifier circuit is connected to the output secondary. A battery or other energy storage device, such as a capacitor, is connected in series with the dc side of the rectifier. The series combination is disposed to be connected to the load. Preferably, an input circuit receives a 115 volt ac input. The transformer has a primary to secondary turns ratio of at least about 9:1.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: August 17, 2004
    Assignee: Illinois Tool Works Inc.
    Inventors: Jon O. Reynolds, Timothy Matus
  • Method and apparatus for welding
    Publication number: 20030217998
    Abstract: A method and apparatus for providing welding power is disclosed. It includes a transformer with a primary winding and an output secondary winding. The ac side of a rectifier circuit is connected to the output secondary. A battery or other energy storage device, such as a capacitor, is connected in series with the dc side of the rectifier. The series combination is disposed to be connected to the load. Preferably, an input circuit receives a 115 volt ac input. The transformer has a primary to secondary turns ratio of at least about 9:1.
    Type: Application
    Filed: May 21, 2002
    Publication date: November 27, 2003
    Applicant: Illinois Tools Works Inc.
    Inventors: Jon O. Reynolds, Timothy Matus