Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Patent
1992-09-29
1994-03-22
Corbin, David H.
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
4052551, E21D 2100
Patent
active
052957683
ABSTRACT:
A collar for a friction rock stabilizer and a friction rock stabilizer incorporating such collar. The collar is shaped having a domed outer surface to allow improved alignment between the collar and a mine bearing plate used between the collar and the mine surface when the stabilizer tube is inserted in a bore in a mine roof or wall.
REFERENCES:
patent: 3478523 (1969-11-01), Reusser et al.
patent: 4265571 (1981-05-01), Scott
patent: 4382719 (1983-05-01), Scott
patent: 4395161 (1983-07-01), Wilson et al.
patent: 4652178 (1987-03-01), Kates et al.
Buchhorn Peter
Starke David H. R.
Corbin David H.
The ANI Corporation Ltd.
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