Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Patent
1993-03-26
1995-02-07
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
4052593, 411 61, E21D 2100, E21D 2000
Patent
active
053870603
ABSTRACT:
The present invention is a system for supporting rock within a mine having a bore hole. The system comprises a mining bolt having a round metal tube which has a completely hollow interior and all cross sectional dimensions less than that of the bore hole. The metal tube has a first end and a second end which are swaged closed to permanently close off the completely hollow interior so the bolt can crush and deform during movement of the rock when in place therein. The swaged second end has a square cross section to allow a tool to turn the mining bolt in the bore hole from the second end. The mining bolt has a metal washer flange fixedly attached to the metal tube adjacent to the swaged second end. The system also comprises a bearing plate disposed between the rock and the flange and a resin cartridge for bonding the mining bolt to the rock within the bore hole. The metal tube has spiral ribbing disposed on the outer surface to mix resin from the resin cartridge as the mining bolt is turned in the bore hole from the swaged second end.
REFERENCES:
patent: 3797254 (1974-03-01), Askey et al.
patent: 4126004 (1978-11-01), Lindeboom
patent: 4316677 (1982-02-01), CiaVatta
patent: 4350462 (1982-09-01), Elders
patent: 4407610 (1983-10-01), Elders
patent: 4430025 (1984-02-01), CiaVatta
patent: 4502818 (1985-03-01), Elders
patent: 4664555 (1987-05-01), Herbst
F. M. Locotos Equipment & Design Co.
Schwartz Ansel M.
Taylor Dennis L.
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