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US 5,705,782 AGranted
Internal coil spot welding device
OwnerDavid Gerbackinventor
Life of this patent
Estimating the term…
Abstract
A spot welding device to secure the inner end of a coil of steel to itself to prevent uncoiling. The welding device is carried on an articulated support arm assembly that allows for positioning the welder within the coil on a gimble axis mount for proper access to the entire inner coil surface. Welding tips are selectively held against the welding surface by an extensible guide and engagement assembly.
Claims7
A coil welding tool to be positioned within a coil of steel or the like for securing the coil's end to the coil comprises;
- a power transformer and a switch assembly, an extension arm extending from said power transformer, welding tip assemblies in said extension arm and said welding tips interconnected with said power transformer and a source of power, a tool support extending from said welding tool to a remote attachment point, means for rotating said welding tool on its longitudinal axis in relation to said tool support and means for selective engagement of said welding tip assemblies within said coil.
Dependencies are inferred from the claim text.