초록 ▼

A moveable undercarriage for supporting and moving a welder over a ground surface having a base to support the welder, a front and rear axle secured to the base each having two wheels rotatably secured to the axles, and a push bar secured to said base to move the base over a ground surface. The fron

A moveable undercarriage for supporting and moving a welder over a ground surface having a base to support the welder, a front and rear axle secured to the base each having two wheels rotatably secured to the axles, and a push bar secured to said base to move the base over a ground surface. The front and rear axles are positioned on the base such that the center of gravity of the welder lies between the axles. The front and rear axles are spaced apart a distance that is less than three times the sum of the radii of the front and rear wheels. The undercarriage includes a brake to engage at least one wheel in a locked position. The push bar has a lift bar to facilitate in the moving of the base.

대표청구항 ▼

1. 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 t

1. 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.2. The undercarriage as defined in claim 1, wherein the spacing between said front and rear axles is between about 1.0-1.5 times the sum of the radii of said front and rear wheels.3. The undercarriage as defined in claim 1, wherein the ratio rear wheel radius to said front wheel radius is between 1:1 to 2.5:1.4. The undercarriage as defined in claim 2, wherein the ratio of said rear wheel radius to said front wheel radius is between 1:1 to 2.5:1.5. The undercarriage as defined in claim 1, wherein said base includes two side edges and side flanges connected thereto and extending downwardly therefrom, at least one axle secured to said side flanges.6. The undercarriage as defined in claim 4, wherein said base includes two side edges and side flanges connected thereto and extending downwardly therefrom, at least one axle secured to said side flanges.7. The undercarriage as defined in claim 5, wherein said side flanges having a forward section positioned forwardly of said front axle and a mid-section positioned between said front and rear axle, said flange mid-section extending downwardly a length that is greater than the downward length of said forward section.8. The undercarriage as defined in claim 6, wherein said side flanges having a forward section positioned forwardly of said front axle and a mid-section positioned between said front and rear axle, said flange mid-section extending downwardly a length that is greater than the downward length of said forward section.9. The undercarriage as defined in claim 1, wherein said front wheels are positioned rearwardly of a front edge of said base and said rear wheels are positioned forwardly of a rear edge of said base.10. The undercarriage as defined in claim 8, wherein said front wheels are positioned rearwardly of a front edge of said base and said rear wheels are positioned forwardly of a rear edge of said base.11. The undercarriage as defined in claim 1, including a brake, said brake including a brake plate secured to a brake arm, a brake arm pivotally connected to said base to move said brake plate into contact and out of contact with at least one of said rear wheels, and a brake bar movable between a locked and unlocked position, said brake bar in said locked position engaging said brake arm to move said brake plate into contact with said rear wheel.12. The undercarriage as defined in claim 10, including a brake, said brake including a brake plate secured to a brake arm, a brake arm pivotally connected to said base to move said brake plate into contact and out of contact with at least one of said rear wheels, and a brake bar movable between a locked and unlocked position, said brake bar in said locked position engaging said brake arm to move said brake plate into contact with said rear wheel.13. The undercarriage as defined in claim 1, wherein said push bar including a base section, a middle section and a handle section, said base section secured to said base, said middle section attached to said base section at an angle of about 15-70°, said handle section attached to said middle section at an angle of about 15-70°, said handle section lying in a plane generally perpendicular to said ground surface.14. The undercarriage as defined in claim 12, wherein said push bar including a base section, a middle section and a handle section, said base section secured to said base, said middle section attached to said base section at an angle of about 15-70°, said handle section attached to said middle section at an angle of about 15-70°, said handle section lying in a plane generally perpendicular to said ground surface.15. The undercarriage as defined in claim 14, wherein said base section lies in a plane that is non-parallel to said top surface plane of said base.16. The undercarriage as defined in claim 1, including a lift bar secured to said push bar.17. The undercarriage as defined in claim 4, including a lift bar secured to said push bar.18. The undercarriage as defined in claim 15, including a lift bar secured to said push bar.19. The undercarriage as defined in claim 1, including at least one hook arrangement secured to said push bar.20. The undercarriage as defined in claim 18, including at least one hook arrangement secured to said push bar.21. The undercarriage as defined in claim 20, including at least one holding compartment secured to said push bar and said hook arrangement.22. The undercarriage as defined in claim 1, including a bumper flange secured to the front edge of said base.23. The undercarriage as defined in claim 21, including a bumper flange secured to the front edge of said base.24. The undercarriage as defined in claim 1, wherein said base having a length and a width at least equal to a length and a width of the welder and/or power supply.25. The undercarriage as defined in claim 23, wherein said base having a length and a width at least equal to a length and a width of the welder.26. The undercarriage as defined in claim 5, wherein said side flanges each including at least three axle openings being generally aligned with one another.27. The undercarriage as defined in claim 6, wherein said side flanges each including at least three axle openings being generally aligned with one another.28. The undercarriage as defined in claim 25, wherein said side flanges each including at least three axle openings being generally aligned with one another.29. The undercarriage as defined in claim 1, wherein said base is rearwardly rotatable about said rear wheels between a fully tilted position and a non-tilted position, said center of gravity of said welder and/or power supply lying on or forwardly of said rear axle and rearwardly of said front axle when said base is in said fully tilted position.30. The undercarriage as defined in claim 4, wherein said base is rearwardly rotatable about said rear wheels between a fully tilted position and a non-tilted position, said center of gravity of said welder and/or power supply lying on or forwardly of said rear axle and rearwardly of said front axle when said base is in said fully tilted position.31. The undercarriage as defined in claim 28, wherein said base is rearwardly rotatable about said rear wheels between a fully tilted position and a non-tilted position, said center of gravity of said welder and/or power supply lying on or forwardly of said rear axle and rearwardly of said front axle when said base is in said fully tilted position.32. A moveable undercarriage for supporting and moving a welder or a power supply over a ground surface comprising a base structure, at least one front wheel rotatably secured to said base structure, at least one rear wheel rotatable secured to said base structure, and a push bar secured to said base structure, said rear wheel having a radius that is equal to or greater than a radius of said front wheel, said at least one front wheel and said at least one rear wheel rotating about axes positioned on said base structure such that a center of gravity of the welder or power supply lies on or between said axes, said axes being spaced apart along the longitudinal axis of said base structure so that the spacing is less than about 3 times the sum of the radii of said front and rear wheels.33. The undercarriage as defined in claim 32, wherein said welder or power supply is positioned in said base structure.34. The undercarriage as defined in claim 33, wherein said welder or power supply is secured to said base structure.35. The undercarriage as defined in claim 32, including at least one axle secured to said base structure, said rear wheel rotatably secured to said axle.36. The undercarriage as defined in claim 32, including at least one axle secured to said base structure, said front wheel rotatably secured to said axle.37. The undercarriage as defined in claim 32, including at least one spindle secured to said base structure, said rear wheel rotatably secured to said spindle.38. The undercarriage as defined in claim 32, including at least one spindle secured to said base structure, said front wheel rotatably secured to said spindle.39. The undercarriage as defined in claim 32, wherein the spacing between said axes of said front and rear wheels is between about 1.0-1.5 times the sum of the radii of said front and rear wheels.40. The undercarriage as defined in claim 32, wherein said at least one front wheel positioned rearwardly of a front edge of said base structure and said at least one rear wheel positioned forwardly of a rear edge of said base structure.41. The undercarriage as defined in claim 32, including a brake, said brake including a brake plate which is moveable into and out of contact with said at least one rear wheel.42. The undercarriage as defined in claim 41, including a brake bar movable between a locked and unlocked position, said brake bar causing said brake plate to move into contact with said at least one rear wheel when said brake bar is moved into the locked position.43. The undercarriage as defined in claim 32, wherein said push bar including a base section and a middle section, said base section connected to said middle section at an angle of about 15°-90°.44. The undercarriage as defined in claim 32, including a lift bar secured to said push bar.45. The undercarriage as defined in claim 1, wherein said center of gravity of the welder and/or power supply lies on or between said axles when the welder and/or power supply is a non-tilted portion on a generally flat ground surface and when the welder and/or power supply is in a tilted position on a generally flat ground surface.46. The undercarriage as defined in claim 2, wherein said center of gravity of the welder and/or power supply lies on or between said axles when the welder and/or power supply is a non-tilted portion on a generally flat ground surface and when the welder and/or power supply is in a tilted position on a generally flat ground surface.47. The undercarriage as defined in claim 32, wherein said center of gravity of the welder or power supply lies on or between said axes when the welder or power supply is a non-tilted portion on a generally flat ground surface and when the welder or power supply is in a tilted position on a generally flat ground surface.48. A moveable undercarriage for supporting and moving a welder or a power supply over a ground surface comprising a base structure, at least one front wheel rotatably secured to said base structure, at least one rear wheel rotatable secured to said base structure, and a push bar secured to said base structure, said rear wheel having a radius that is equal to or greater than a radius of said front wheel, said at least one front wheel and said at least one rear wheel rotating about axes positioned on said base structure which are spaced apart along the longitudinal axis of said base structure so that the spacing is less than about 2 times the sum of the radii of said front and rear wheels.49. The undercarriage as defined in claim 48, wherein the spacing between said front and rear axes is between about 1.0-1.5 times the sum of the radii of said front and rear wheels.50. The undercarriage as defined in claim 48, wherein said front and rear axles positioned on said base structure such that a center of gravity of the welder or power supply lies on or between said axes when the welder or power supply is in a non-tilted position on a generally flat ground surface and when the welder or power supply is in a tilted position on a generally flat ground surface.