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1. (WO2018157198) ANCHOR BOLT

Pub. No.:    WO/2018/157198    International Application No.:    PCT/AU2018/050158
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: E21D 21/00
E21D 20/00
F16B 13/06
Applicants: HOWELL, Stephen
Inventors: HOWELL, Stephen
The invention discloses an anchor bolt for use as a rock bolt or friction bolt in a bore hole formed in a rock body. The anchor bolt comprises an elongated load bearing element having opposed first and second ends, with an anchor supported near the first end. The anchor has a deflectable part being outwardly deflectable from the load bearing element. A sleeve surrounds the load bearing element between the anchor and the second end, with the sleeve being spaced from the first end forming an axial gap between the sleeve and the anchor. A deflection arrangement is formed on the sleeve configured to deflect the deflectable part of the anchor. The load bearing element is axially movably within the sleeve whereby, in use, the anchor can traverse the gap to bring the deflectable part into contact with the deflection arrangement to cause deflection of the deflectable part.