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US 2002/0153354 A1Published application
Rail welderhead shear apparatus
AssigneeHolland Company
InventorsRobert V. Norby, Rene A. Hunziker
Life of this patent
Estimating the term…
Abstract
A flash butt rail welding welderhead combines in a single unit, the ability for the three functions of rail pulling, flash butt forging and maintaining the “after forged” displacement without any change in platen position such that shearing may be accomplished in three stages, a single stage, multiple stages or a progressive stage, all while maintaining clamping and stretching force on the rails.
Claims5
A rail welderhead comprising:
- two opposing pairs of quadrants constructed and arranged to close on adjacent rail sections and provide rail clamping by engagement of pads provided on the rail sections, the opposing pairs of quadrants defining a firebox therebetween;
- and
- a shear die fully enclosed within the firebox such that, when the welderhead's opposing quadrants are in a fully closed position, the shear die, the fully sheared weld, and the weld collar are contained within the firebox.
Dependencies are inferred from the claim text.