Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1984-02-13
1985-12-03
Husar, Cornelius J.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405259, 411 47, E21D 2002
Patent
active
045563446
ABSTRACT:
A combination expansion shell and resin secured mine roof anchor assembly comprising an elongated bolt which carries rebar and an expansion shell. The assembly is inserted into a mine roof opening, in the back end of which is positioned a resin and catalyst cartridge. The cartridge is ruptured by the assembly allowing the resin and catalyst to gravitate downwardly, where they are mixed together by the rebar upon rotation of the bolt. The bolt is rotated a predetermined number of revolutions to obtain proper mixing of the resin and catalyst preparatory to setting, after which the continued rotation of the bolt in the same direction effects movement of the expansion shell into gripping engagement with the mine roof.
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Birmingham Bolt Company
Husar Cornelius J.
Stodola Nancy J.
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