US 6,982,398 B2
Fuel saving engine driven welding-type device and method of use
Bruce Albrecht, Grayslake, Ill. (US)
Assigned to Illinois Tool Works Inc., Glenview, Ill. (US)
Filed on Jun. 01, 2004, as Appl. No. 10/709,835.
Prior Publication US 2005/0263514 A1, Dec. 01, 2005
Int. Cl. B23K 9/10 (2006.01)
U.S. Cl. 219—133 35 Claims
OG exemplary drawing
 
1. A method of generating a weld power from alternate power supplies comprising the steps of:
generating a weld power from an input power supplied by an energy storage device;
starting a fossil fuel driven engine upon generation of the weld power; and
upon completion of starting the fossil fuel driven engine, automatically transferring the supplied input power from the energy storage device to a power delivered from the fossil fuel driven engine without interruption of the weld power.