Rock stabilizer

Details Rock stabilizer Rock stabilizer

2006-07-11

2006-07-11

Will, Thomas B. (Department: 3671)

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

C405S259500, C411S078000

Reexamination Certificate

active

07073981

ABSTRACT:
A rock stabilizer includes a metal tube with a tapered distal end and a flanged proximal end capable of being positioned within a bore in a mine wall. A slit runs substantially the entire length and indentations are formed in the outer surface along the length adjacent the slit so that grout pumped into the interior of the tube flows out of the slit and into the indentations. An expander wedge within the tube adjacent the distal end is actuatable from the proximal end after the stabilizer is installed in a bore. The wedge expands the distal end of the tube to firmly anchor the stabilizer in the bore. The expander wedge is formed of one wedge welded to the interior of the tube and a second wedge moveable toward the fixed wedge. The two wedges are temporarily maintained together in the interior of the tube before actuation.

REFERENCES:
patent: 2690693 (1954-10-01), Campbell
patent: 2748594 (1956-06-01), Edwards
patent: 3844194 (1974-10-01), Reinwall, Jr.
patent: 4275637 (1981-06-01), Herb et al.
patent: 4293244 (1981-10-01), Donan, Jr.
patent: 4427327 (1984-01-01), Herb
patent: 5112160 (1992-05-01), Jensen et al.

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