Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1993-06-24
1995-05-16
Reese, Randolph A.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
4053021, 4053022, E21D 2000, E21D 2100
Patent
active
054154987
ABSTRACT:
Mine roof support systems, components and method, for supporting, whether in active or passive mode, mine roof strata; first and second, mutually spaced series of brackets are supplied for mounting to opposite sides of a mine roof span, and one or more cable assemblies are looped about such brackets and secured to the mine roof strata, such cable assemblies also being provided with take-up means: the invention is suitable and effective for supporting mine roof strata at various, desire mine locations.
REFERENCES:
patent: 3107902 (1963-10-01), Calder
patent: 4413928 (1983-11-01), Tucker
patent: 4666344 (1987-05-01), Seegmiller
patent: 4775266 (1988-10-01), Seegmiller
patent: 4776729 (1988-10-01), Seegmiller
patent: 4960348 (1990-10-01), Seegmiller
patent: 5026217 (1991-06-01), Seegmiller
Reese Randolph A.
Ricci John A.
Shaffer M. Ralph
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