Patent ID: 7340800

Claim:
A weld-on barrel hinge for hinging together a first item and a second item, comprising: a cylindrical female barrel portion consisting essentially of a cylindrical sidewall with an aperture formed therein, a length, two ends, and an outside surface, and an axial bore, having an interior wall surface and a diameter, the axial bore extending from end to end, wherein the cylindrical sidewall of the cylindrical female barrel portion is welded in place to a first item; a first and second male barrel portion, each male barrel portion consisting essentially of a cylindrical main body portion with an outer surface, and a pin extension, the pin extension having a pin length and pin diameter, the pin extensions having ends, the pin diameter being sized to be rotatably received within the axial bore of the female barrel portion, wherein the sum of the pin lengths of the pin extensions of the first and second male barrel portions is less than the length of the axial bore of the female barrel portion, such that when the pin extensions of the first and second male barrel portion are fully inserted into the interior bore of the female barrel portion, a cavity is defined by the space between the ends of the first and second pin extensions and the axial bore, which cavity is in the vicinity of the aperture in the sidewall of the female barrel portion, wherein the outer surfaces of the cylindrical main body portions of the first and second male barrel portions are welded directly in place to a second item; and a lubricant fitting affixed within the aperture in the sidewall of the female barrel portion.