Patent ID: 8304680
Filing Date: 2012-11-06
Classification: B23K

Abstract:
1. A portable bore welding machine having automatic step adjustment for circular deposition of a weld bead on an inside surface of a bore, said machine comprising a torch assembly comprising a torch head attached to a torch head extension tube bottom end by a first adjustable swivel assembly for said torch head movement through a first angle relative to said torch head extension tube, a second adjustable swivel assembly for said torch head extension tube movement through a second angle relative to a machine vertical axis attached to the torch head extension tube top end for placing the torch head in a desired location adjacent to said inside surface of the bore, one integral electric motor for advancing the torch head linearly into the bore and for rotating the torch head around said inside surface of the bore, an electrical swivel connector for providing electrical connectivity to the torch head as it rotates, a feed assembly for feeding a consumable welding wire electrode to the torch head and a control assembly for controlling the operation of said welding machine.