E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 17/10 (2006.01) E21D 21/00 (2006.01)
Patent
CA 2168930
A plate (1) for use in support of a mine roof comprising two interconnected parts (2, 3). The first part has a substantially frusto-conical projecting portion (6) which defines a first opening (7) and the second part (3) is fitted to the first part and has an associated second opening to allow for a rock bolt to pass through the plate. The two parts (2, 3) are interconnected by an interconnecting portion (20) of the second part, which is arranged through the opening (7) and is deformed such as by being swaged over to capture the projecting portion 6. The interconnecting portion is swaged over to form either a single continuous return portion (13) or individual return portions (23).
Fergusson Jeffrey Robert
Minova Australia Pty Ltd
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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