초록 ▼

A portable hand cart particularly suited for carrying a welding system is provided. The cart includes a bottom platform carried by a rectangular bottom frame; a back frame extending upward from the bottom frame and including an angled handle; a top platform carried by a rectangular top frame that is

A portable hand cart particularly suited for carrying a welding system is provided. The cart includes a bottom platform carried by a rectangular bottom frame; a back frame extending upward from the bottom frame and including an angled handle; a top platform carried by a rectangular top frame that is somewhat narrower than the bottom frame; a front frame extending upward from the front sides of the bottom frame; two front wheels; two back pneumatic wheels; a lower tank frame extending rearward from the back bottom frame and supporting a tank platform; and an upper tank cradle extending rearward from the back of the top frame. The cart is stable and balanced both in a shop and in the field when loaded with a welding system and with or without a compressed gas cylinder.

대표청구항 ▼

1. A portable hand cart for carrying welding equipment, comprising: a rectangular bottom frame;a rectangular bottom platform attached to said bottom frame with said bottom frame extending upward from said bottom platform to create a bottom lip;a back frame permanently attached to said bottom frame a

1. A portable hand cart for carrying welding equipment, comprising: a rectangular bottom frame;a rectangular bottom platform attached to said bottom frame with said bottom frame extending upward from said bottom platform to create a bottom lip;a back frame permanently attached to said bottom frame and comprising a left back leg, a right back leg, and an angled handle angled backward between 15 and 75 degrees from a plane formed by said left back leg and said right back leg;a top frame permanently attached to a middle area of said back frame, wherein said top frame is narrower than said bottom frame;a front frame permanently attached to said bottom frame, wherein said top frame is permanently attached to said front frame;a rectangular top platform permanently attached to a portion of said top frame and a portion of said front frame;two front wheels operatively attached near the front corners of said bottom platform;two rear wheels operatively attached at a back area of said bottom frame;a rear-extending lower tank frame permanently attached to a rear area of said bottom frame;a tank platform permanently attached to said lower tank frame; anda rear-extending upper cradle permanently attached to the back portion of said top frame and extending rearward past a plane formed by said left back leg and said right back leg said upper cradle comprises two curved cradle sides with a flattened cradle portion disposed between said two curved sides; and said upper cradle has a width somewhat wider than the radius of a standard gas cylinder. 2. The portable hand cart for carrying welding equipment, as recited in claim 1, wherein said two rear wheels comprise pneumatic tires. 3. The portable hand cart for carrying welding equipment, as recited in claim 2, wherein said two front wheels comprise swivel castor-type wheels. 4. The portable hand cart for carrying welding equipment, as recited in claim 3, further comprising two opposing cord hangers disposed on said angled handle of said back frame and configured for receiving an electrical extension cord. 5. The portable hand cart for carrying welding equipment, as recited in claim 4, wherein: said front frame comprises a left front frame element, a top front frame element, and a right front frame element, and wherein said front frame is formed of a single piece of material bent to form said left front frame element, said top front frame element, and said right front frame element; andsaid back frame is formed of a single piece of material bent to form said left back leg, said right back leg, and said angled. 6. The portable hand cart for carrying welding equipment, as recited in claim 4, further comprising a chain having two opposing chain ends and suitable for restraining a compressed gas cylinder, wherein: a first one of said two opposing chain ends is permanently attached to a rearward portion of a first one of said two curved cradle sides, anda second one of said two opposing chain ends is configured with a chain connecting component adapted for connecting said chain; andthe rearward portion of a second one of said two curved cradle sides is configured with a chain attachment mechanism adapted for receiving said chain connecting component. 7. The portable hand cart for carrying welding equipment, as recited in claim 4, wherein the rearward portion of each of said two curved cradle sides is configured with a chain attachment mechanism adapted for receiving a portion of a chain for restraining a compressed gas cylinder. 8. The portable hand cart for carrying welding equipment, as recited in claim 4, wherein said rectangular bottom frame, said back frame, said top frame, said front frame, said lower tank frame, said bottom platform, said top platform, and said tank platform are formed of a highly durable manmade material. 9. The portable hand cart for carrying welding equipment, as recited in claim 8, wherein said highly durable manmade material comprises fiberglass. 10. The portable hand cart for carrying welding equipment, as recited in claim 8, wherein said highly durable manmade material comprises plastic. 11. The portable hand cart for carrying welding equipment, as recited in claim 7, wherein: said rectangular bottom frame, said back frame, said top frame, said front frame, and said lower tank frame are formed of tubular metal; andsaid bottom platform, said top platform, and said tank platform are formed of sheet metal. 12. The portable hand cart for carrying welding equipment, as recited in claim 11, wherein: said left back leg has a lower end welded perpendicularly to the left back corner area of said bottom frame;said right back leg has a lower end welded to the right back corner area of said bottom frame;said top frame comprises two top side frame elements, each having a forward end and a rearward end, and a top back mid-frame element, wherein said mid-frame element extends between said two top side frame elements at a predetermined distance from said rearward ends of said two top side frame elements;the bottom of said left back frame element of said front frame and the bottom of said right back frame element of said front frame are welded to opposing outer corner areas of said bottom frame;said rectangular top platform is welded to said top frame, to said mid-frame element, and to the center of said top front frame element;said top frame, said mid-frame element, and said top front frame element extend upward from said top platform to create a top lip; andsaid tank platform is welded to the bottom of said lower tank frame with said lower tank frame extending upward from said bottom platform to form a tank lip. 13. The portable hand cart for carrying welding equipment, as recited in claim 12, wherein said rear-extending upper cradle is positioned to hold a standard compressed gas cylinder in a manner in which, when said portable hand cart is tilted backward, the weight of said standard compressed gas cylinder offsets any weight from said welding equipment carried on said top platform and said bottom platform. 14. A portable welding cart for carrying a welding unit, tools, and an electrical extension cord, comprising: a rectangular bottom frame;a rectangular bottom platform welded below said bottom frame with said bottom frame extending upward from said bottom platform to create a bottom lip;a single piece of metal bent to form a back frame comprising a left back leg having an upper end and a lower end with said lower end welded perpendicularly to the left back corner area of said bottom frame, a right back leg having an upper end and a lower end with said lower end welded perpendicularly to the right back corner area of said bottom frame, and an angled handle disposed between said upper end of said left back leg and said upper end of said right back leg, wherein said angled handle is angled backward from a plane formed by said right back leg and said left back leg, and wherein said handle is configured with two opposing cord hangers disposed on the exterior-facing portion of said handle;a top frame comprising two top side frame elements, each having a forward end and a rearward end, and a top back mid-frame element welded between said two top side frame elements at a predetermined distance from said rearward ends of said two top side frame elements, wherein said top frame is narrower than said bottom frame;a front frame of a single piece of metal shaped to form a left front frame element continuing to a first rounded corner continuing to a top front frame element continuing to a second rounded corner and continuing to a right front frame element, wherein the bottom of said left back frame element and the bottom of said right back frame element are welded to opposing outer corner areas of said bottom frame;a rectangular top platform welded to the bottom of said top frame, to the bottom of said mid-frame element, and to the bottom of the center of said top front frame element, wherein said top frame, said mid-frame element, and said top front frame element extend upward from said top platform to create a top lip;two swivel caster-type front wheels operatively attached near opposing front corners of said bottom platform;two rear wheels carrying pneumatic tires operatively attached at a back area of said bottom frame;a rear-extending lower tank frame formed of a single piece of metal bent to form a first tank frame side, a mid tank frame side, and a second tank frame side, wherein the end of said first tank frame side and the end of said second tank frame side are welded to a rear area of said bottom frame;a tank platform welded below said lower tank frame with said lower tank frame extending upward from said bottom platform to form a tank lip, wherein said tank frame and said tank platform are configured to support the bottom of a compressed gas cylinder; anda rear-extending upper cradle welded to the back portion of said top frame and extending rearward past the plane formed by said left back leg and said right back leg and configured to support a side of said compressed gas cylinder, wherein said cradle comprises two curved cradle sides with a flattened cradle portion disposed between said two curved sides; said cradle has a width somewhat wider than the radius of said compressed gas cylinder; said cradle is welded to a middle area of said mid-frame element; and each of two curved cradle sides are configured with a chain attachment mechanism. 15. A portable welding cart for carrying a welding unit, tools, and an electrical extension cord, as recited in claim 14, wherein said rectangular bottom frame, said back frame, said top frame, said front frame, and said lower tank frame are formed of tubular metal. 16. A portable welding cart for carrying a welding unit, tools, and an electrical extension cord, as recited in claim 15, wherein said bottom platform, said top platform, and said tank platform are formed of sheet metal.