Title:
ROCK FACE MOVEMENT MONITOR
Document Type and Number:
WIPO Patent Application WO/2018/027245
Kind Code:
A3
Abstract:
The invention provides a rock face movement detector which includes an elongate member which extends between a first end and a second end, an anchoring mechanism for anchoring the member in a hole in a rock face on or attached to the first end of the member, a body on the member towards the second end which is axially moveable thereon relatively to the member, and which body includes an indicator formation which project laterally from the body, a setting element which is engaged with and moveable along the member to limit movement of the body in a direction towards the second end and a concealing collar which is mounted on the body, wherein the collar is adapted to engage with, and conceal, the indicator formation and to break away from the body, when movement in the rock face reaches a predetermined limit, to expose the indicator formation.
Inventors:
CROMPTON BRENDAN ROBERT (ZA)
PASTORINO PAOLO ETTORS (ZA)
PASTORINO PAOLO ETTORS (ZA)
Application Number:
PCT/ZA2017/000007
Publication Date:
March 08, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
NCM INNOVATIONS PTY LTD (ZA)
International Classes:
G01B5/30; E21F17/18; G08B21/18
Foreign References:
| ZA201001315B | 2012-10-31 | |||
| US4217849A | 1980-08-19 | |||
| GB1318344A | 1973-05-31 |
Attorney, Agent or Firm:
MCCALUM RADEMEYER AND FREIMOND et al. (ZA)
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