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US 2013/0156510 A1Published application
Rock bolt
AssigneeRSC Mining (Pty) Ltd.
InventorJohann Steyn
Life of this patent
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Abstract
A rock bolt includes an elongate tubular body with an internal bore. A filler material is insertable into the internal bore at one end of the elongated tubular body. The end of the tubular body is then deformed thereby using the filler material to seal the end of the bore. The filler material may be a non-metallic material, such as a tube of plastic.
Claims4
A rock bolt which includes an elongate tubular body with an internal bore, a leading end and a trailing end, and filler material in the leading end, and wherein the leading end is deformed so that the filler material seals the bore at the leading end.
Dependencies are inferred from the claim text.