Roof bolter and process

Hydraulic and earth engineering – Earth treatment or control – Chemical

Patent

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Details

405303, 173 38, 173 43, E21D 2002, E21C 500, E21C 900

Patent

active

043988504

ABSTRACT:
Roof bolter and process for resin bolting a mine roof. The roof bolter comprises combined means for drilling and resin inserting in one position, means for bolt inserting in a second position, and means for positioning the roof bolter first into one and then into its second positions. The process comprises drilling a hole in the mine roof and inserting in tandem resin into the hole and, inserting into and securing a bolt within the hole. Preferably, the roof bolter and the process are automated and remotely controlled.
The invention further includes a device designed for attachment to a three-position resin type roof bolter and for converting it to a two-position resin type roof bolter.

REFERENCES:
patent: 2646256 (1953-07-01), Lobbert
patent: 3212269 (1965-10-01), Olsen
patent: 3552504 (1971-01-01), Chappuls
patent: 4105081 (1978-08-01), Perraud
patent: 4215953 (1980-08-01), Perraud
patent: 4229124 (1980-10-01), Frey et al.

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