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An integrated welder, generator and compressor unit that includes a housing that at least partially contains components of a welder, generator and compressor. An engine, an electric current generator, and an air compressor are at least partially mounted in the housing. The electric current generator

An integrated welder, generator and compressor unit that includes a housing that at least partially contains components of a welder, generator and compressor. An engine, an electric current generator, and an air compressor are at least partially mounted in the housing. The electric current generator is at least partially connected to the engine to be at least partially driven thereby. A drive connector at least partially connects the air compressor to the engine and/or electric current generator. The drive connector includes a gear box that has at least one gear.

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I claim: 1. A portable integrated welder, generator and compressor unit comprising: a. a housing that at least partially contains components of said welder, generator and compressor, said housing including wheels to enable said housing to be rolled over a ground surface; b. an engine at least parti

I claim: 1. A portable integrated welder, generator and compressor unit comprising: a. a housing that at least partially contains components of said welder, generator and compressor, said housing including wheels to enable said housing to be rolled over a ground surface; b. an engine at least partially mounted in said housing; c. an electric current generator at least partially mounted in said housing and connected or interconnected to said engine to be at least partially driven thereby; d. an air compressor at least partially mounted in said housing; and e. a beltless and clutchless drive connector that connects said air compressor to said engine or said electric current generator, said beltless drive connector including a gear box having at least one gear. 2. The unit as defined in claim 1, including an air accumulator tank at least partially mounted in said housing, said air accumulator is fluidly connected to said air compressor. 3. The unit as defined in claim 1, including a pressure monitor at least partially mounted on said housing to monitor air pressure generated by said air compressor. 4. The unit as defined in claim 2, including a pressure monitor at least partially mounted on said housing to monitor air pressure generated by said air compressor, contained in said air accumulator or combinations thereof. 5. The unit as defined in claim 1, wherein said gear box connects said air compressor to said engine. 6. The unit as defined in claim 2, wherein said gear box connects said air compressor to said engine. 7. The unit as defined in claim 4, wherein said gear box connects said air compressor to said engine. 8. The unit as defined in claim 1, wherein said gear box connects said air compressor to said electric current generator. 9. The unit as defined in claim 2, wherein said gear box connects said air compressor to said electric current generator. 10. The unit as defined in claim 4, wherein said gear box connects said air compressor to said electric current generator. 11. The unit as defined in claim 7, wherein said gear box includes a plurality of gears, said gear box having a single gear ratio. 12. The unit as defined in claim 10, wherein said gear box includes a plurality of gears, said gear box having a single gear ratio. 13. The unit as defined in claim 7, wherein said gear box includes a plurality of gear ratios, said gear ratios are manually selectable. 14. The unit as defined in claim 10, wherein said gear box includes a plurality of gear ratios, said gear ratios are manually selectable. 15. The unit as defined in claim 7, wherein said gear box includes a plurality of gear ratios, said gear ratios are automatically selectable. 16. The unit as defined in claim 10, wherein said gear box includes a plurality of gear ratios, said gear ratios are automatically selectable. 17. The unit as defined in claim 7, wherein said housing includes at least one electrical outlet for use by welding equipment and at least one air outlet for use by air powered tools. 18. The unit as defined in claim 10, wherein said housing includes at least one electrical outlet for use by welding equipment and at least one air outlet for use by air powered tools. 19. A method of providing compressed air from a portable integrated welder comprising: a. providing a housing that at least partially contains an engine at least partially mounted in said housing, said housing including wheels to enable said housing to be rolled over a ground surface; b. providing an electric current generator that is at least partially mounted in said housing and connected or interconnected to said engine to be at least partially driven thereby; c. providing an air compressor at least partially mounted in said housing; and d. providing a beltless and clutchless drive connector that is connected to said air compressor and said engine or said electric current generator to be at least partially driven thereby, said beltless drive connector including a gear box having at least one gear. 20. The method as defined in claim 19, including the step of providing an air accumulator tank that is at least partially mounted in said housing, said air accumulator is fluidly connected to said air compressor to at least partially accumulate compressed air generated by said air compressor. 21. The method as defined in claim 19, including the step of providing a pressure monitor at least partially mounted on said housing, said pressure monitor at least partially monitoring air pressure generated by said air compressor. 22. The method as defined in claim 20, including the step of providing a pressure monitor at least partially mounted on said housing, said pressure monitor at least partially monitoring air pressure generated by said air compressor, contained in said air accumulator, or combinations thereof. 23. The method as defined in claim 19, wherein said gear box connects said air compressor to said engine. 24. The method as defined in claim 20, wherein said gear box connects said air compressor to said engine. 25. The method as defined in claim 22, wherein said gear box connects said air compressor to said engine. 26. The method as defined in claim 19, wherein said gear box connects said air compressor to said electric current generator. 27. The method as defined in claim 20, wherein said gear box connects said air compressor to said electric current generator. 28. The method as defined in claim 22, wherein said gear box connects said air compressor to said electric current generator. 29. The method as defined in claim 25, wherein said gear box includes a plurality of gears, said gear box having a single gear ratio. 30. The method as defined in claim 28, wherein said gear box includes a plurality of gears, said gear box having a single gear ratio. 31. The method as defined in claim 25, wherein said gear box includes a plurality of gear ratios, said gear ratios are manually selectable. 32. The method as defined in claim 28, wherein said gear box includes a plurality of gear ratios, said gear ratios are manually selectable. 33. The method as defined in claim 25, wherein said gear box includes a plurality of gear ratios, said gear ratios are automatically selectable. 34. The method as defined in claim 28, wherein said gear box includes a plurality of gear ratios, said gear ratios are automatically selectable. 35. The method as defined in claim 25, including the step of including at least one electrical outlet on said housing for use by welding equipment and at least one air outlet for use by air powered tools. 36. The method as defined in claim 28, including the step of including at least one electrical outlet on said housing for use by welding equipment and at least one air outlet for use by air powered tools. 37. An integrated welder, generator and compressor unit comprising: a. a housing that at least partially contains components of said welder, generator and compressor; b. an engine at least partially mounted in said housing; c. an electric current generator at least partially mounted in said housing and connected or interconnected to said engine to be at least partially driven thereby; d. an air compressor at least partially mounted in said housing; e. a pressure monitor at least partially mounted on said housing to monitor air pressure generated by said air compressor, contained in said air accumulator or combinations thereof and; f. a beltless and clutchless connector that enables said engine to at least partially drive said air compressor, said connector including a gear box that connects said air compressor to said engine. 38. The unit as defined in claim 37, wherein said gear box includes a plurality of gears, said gear box having a single gear ratio. 39. The unit as defined in claim 38, wherein said housing includes at least one electrical outlet for use by welding equipment and at least one air outlet for use by air powered tools. 40. The unit as defined in claim 39, wherein said housing includes wheels to enable said housing to be rolled over a ground surface. 41. A method of providing compressed air from an integrated welder comprising: a. providing a housing that at least partially contains an engine at least partially mounted in said housing; b. providing an electric current generator that is at least partially mounted in said housing and connected or interconnected to said engine to be at least partially driven thereby; c. providing an air compressor at least partially mounted in said housing; d. providing a beltless and clutchless connector that enables said engine to at least partially drive said air compressor, said connector including a gear box that connects said air compressor to said engine; e. providing a pressure monitor at least partially mounted on said housing, said pressure monitor at least partially monitoring air pressure generated by said air compressor, contained in said air accumulator, or combinations thereof; and, f. driving said air compressor at least partially by said engine. 42. The method as defined in claim 41, wherein said gear box includes a plurality of gears, said gear box having a single gear ratio. 43. The method as defined in claim 42, including the step of including at least one electrical outlet on said housing for use by welding equipment and at least one air outlet for use by air powered tools. 44. The method as defined in claim 43, including the step of providing wheels on said housing, said wheels enabling said housing to be rolled over a ground surface.