Rock bolting device

Details Rock bolting device Rock bolting device

1991-11-12

1992-11-24

Corbin, David H.

Hydraulic and earth engineering

Miscellaneous

4052596, E02D 2002

Patent

active

051658259

ABSTRACT:
Rock bolting device comprising a swingable bolting unit (2) which carries a conduit (4) for transport of hardenable mass to a drill hole (3). The conduit is surrounded by a tube (5) in which a thickened part (6) of the conduit is movable to-and-fro under sealing cooperation with the tube. Through this the conduit (4) can be fed towards or away from the mouth (7) of the drill hole (3).

REFERENCES:
patent: 4229124 (1980-10-01), Frey et al.
patent: 4420277 (1983-12-01), Hibbard et al.
patent: 4545702 (1985-10-01), Sano et al.
patent: 4643619 (1987-02-01), Issakainen

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