초록 ▼

A mine bolt formed of continuous fiber reinforced pultruded rod-like reinforcing element is disclosed. This rod-like element includes at least one helical groove and/or protrusion along its length, with the continuous reinforcing fibers in the protrusions or surrounding grooves generally conforming

A mine bolt formed of continuous fiber reinforced pultruded rod-like reinforcing element is disclosed. This rod-like element includes at least one helical groove and/or protrusion along its length, with the continuous reinforcing fibers in the protrusions or surrounding grooves generally conforming to the helical pattern of the outer surface of the rod. The bolts formed by the instant invention also have utility in reinforcing such structures as mine roofs or concrete. The bolt of the instant invention comprises the above helically grooved rod fitted with an end cap that fits the helical turns of the grooved rod. The end cap may also serve as the mine roof plate.

대표청구항 ▼

A reinforcing bolt and end cap comprising a fiber reinforced resin rod having one or more continuous protrusions and/or grooves on the surface and helically along the length thereof wherein the fibers in said protrusions and surrounding the grooves follow the pattern of the protrusions and/or groove

A reinforcing bolt and end cap comprising a fiber reinforced resin rod having one or more continuous protrusions and/or grooves on the surface and helically along the length thereof wherein the fibers in said protrusions and surrounding the grooves follow the pattern of the protrusions and/or grooves along the rod such that at any point along the length of the rod the same fibers will be located in said protrusions and surrounding said grooves and an end cap on said rod comprising a planar surface and a recessed cavity having protrusions and grooves, its inner surface corresponding to the helical pattern of protrusions and/or grooves on said rod.