Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Patent
1998-05-06
1999-10-26
Bagnell, David
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
405244, 182 3, 119770, E21D 2000
Patent
active
059716681
ABSTRACT:
A portable anchor for tethering to on the shelf of a rock quarry includes an elongated lower post adapted into slip charge holes drilled in the quarry shelf, a stop plate connected to the post and rotatably resting on the shelf, and hook receiving means for connection of one end of a tether line that is connected at the other end to a harness or belt worn by the worker. A method for anchoring to said quarry shelf includes providing an anchor adapted to slip into the charge receiving holes formed in the shelf, and having a stop plate for positioning the depth of the anchor in the charge hole.
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Bagnell David
Frantz Keith
Lee Jong-Suk
LandOfFree
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