Patent ID: 6621035
Filing Date: 2003-09-16
Classification: B23K

Abstract:
A welding device for facilitating deposit of a welding bead on a surface to be built-up, the welding device comprising:a housing accommodating a rotatable spindle therein; a drive mechanism coupled to the spindle to facilitate rotation thereof; a first rider circumscribing the spindle; a first gripper member supported by the first rider, the first gripper member surrounding the spindle such that the spindle is axially moveable with respect to the first gripper member in one direction of motion and is axially immovable with respect to the first gripper member in a second opposite direction of motion; a second rider circumscribing the spindle such that the first rider is between the drive mechanism and the second rider, the second rider having an operative mode in which, as the spindle rotates with respect to the housing, the second rider induces the spindle to move axially with respect to the housing, and an inoperative mode in which, as the spindle rotates with respect to the housing, the second rider slides axially with respect to the spindle without inducing axial movement of the spindle with respect to the housing; a second gripper member supported by the second rider, the second gripper member surrounding the spindle such that the second rider is axially moveable with respect to the spindle in one direction of motion and is axially immovable with respect to the spindle in a second opposite direction of motion; and at least one spring between the first rider and the second rider.