Importance

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Abstract

Embodiments of the present invention comprise hot-rolled threaded rebar bolts that are less costly to manufacture but maintain the same or similar structural benefits of more costly manufactured bolts presently in use. One embodiment of the invention is directed generally to bolts for use in mine roof support applications, or other structural support applications, that are manufactured by hot-rolling a steel bar into a threaded bolt. Hot-rolling threads onto a bar results in eliminating costly processes to prepare the rebar for threading and mechanically threading the rebar via standard thread-cutting schemes, and creates bolts efficiently in large quantities that have semi-continuous threads and minor or no longitudinal ribs. The threaded rebar bolts are rotatable in cured resin nuts, making them tensionable, and can be adapted for use with a columnar resin nut disposed in bore holes in geological structures.

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First Claim