Patents by Inventor Francis X. Wedel

Francis X. Wedel 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: 5861604
    Abstract: A "hot start" method for arc welding includes selecting a first weld current, setting a time interval, striking an arc, flowing a second, higher weld current through the welding rod and then, after a brief time interval, reducing the current through the rod to the value of the first weld current. Also disclosed is a new arc welder stator having two groups of slots around a core. The group of larger slots contains the weld current windings and slots in the group of smaller slots contain windings for timing, gate voltage, battery charging, auxiliary power and the like. A new cooling apparatus for an arc welder has an air duct and a "double-bladed" fan for flowing air along several paths and cooling both the welder control section and the generating section. A new method for electronically controlling engine speed in an engine-driven arc welder is also disclosed.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: January 19, 1999
    Assignee: Generac Corporation
    Inventors: Graham W. McLean, Jeffery J. Jonas, Robert D. Kern, Gerald C. Ruehlow, Francis X. Wedel