Patent ID: 6909068

Claim:
A moveable undercarriage for supporting and moving a welder and/or power supply over a ground surface comprising a base to support the welder and/or power supply, a front and rear axle secured to said base, two front wheels rotatably secured to said front axle, two rear wheels rotatably secured to said rear axle, and a push bar secured to said base, said rear wheels having a radius that is greater than a radius of said front wheels, said base having a generally flat top surface lying in a plane generally parallel to a flat ground surface, said front and rear axles positioned on said base such that a center of gravity of the welder and/or power supply lies between said axles, said front and rear axle spaced apart along a longitudinal axis of said base at a distance less than about 3 times the sum of the radii of said front and rear wheels.