Patent Number: 8,875,556

Title: Railroad spikes and methods of making the same

Abstract: Embodiments of the present invention are directed to improved designs of railroad spikes and improved methods of manufacturing the same. According to one exemplary embodiment, a method for manufacturing a railroad spike may have the steps of: preparing a metal blank having a substantially circular cross-section; subjecting the metal blank to at least one cold heading process and at least one cold extrusion process to form a railroad spike having (a) a circular head with a fillet at its bottom side that is angled to engage a railroad tie plate or rail base and (b) a non-threaded shank with a substantially square cross-section and a chiseled tip; and coating the railroad spike with an anti-corrosion material.

Inventors: Newell; Hayden W (Boones Mill, VA)

Assignee: Norfolk Southern Corporation

International Classification: E01B 9/06 (20060101)

Expiration Date: 2019-11-04 0:00:00