Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1983-09-19
1985-11-12
Husar, Cornelius J.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405296, 299 12, E21D 1702, E21D 1900, E21C 4702
Patent
active
045524874
ABSTRACT:
A mine roof support unit has a roof shield for supporting the roof of a mine working, and a goaf shield for screening off the goaf space of the working. The mine roof support unit is provided with dust suppression means constituted by a flat-section spray nozzle arranged along the front edge of the roof shield, or along the top edge of the goaf shield. The spray nozzle is directed upwardly away from the roof support unit and towards the goaf space.
REFERENCES:
patent: 2693950 (1954-11-01), Calder
patent: 2763511 (1956-09-01), Berry
patent: 3859801 (1975-01-01), Weirich
patent: 3906733 (1975-09-01), Koppers
patent: 3916631 (1975-11-01), Agnew et al.
patent: 4075857 (1978-02-01), Elsner et al.
patent: 4243268 (1981-01-01), Lobbe et al.
patent: 4293247 (1981-10-01), Rosenberg et al.
Gauthier Maurice E.
Gewerkschaft Eisenhutte Westfalia
Husar Cornelius J.
Stodola Nancy J.
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