Point anchor coated mine roof bolt

Details Point anchor coated mine roof bolt Point anchor coated mine roof bolt

2007-11-20

2007-11-20

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

C405S259500, C405S259400, C405S302100

Reexamination Certificate

active

11474006

ABSTRACT:
A resin bonded mine roof bolt having an elongated rod with a first end and a second end. A segmented resin compression layer covers a portion of the rod below the first end. When installed in a mine roof bore hole with curable resin, the resin compression layer mixes the resin and partially fills the bore hole to minimize the amount of resin needed to anchor the bolt. Individual segments of the layer are tapered to create a wedging force on resin with the bore hole.

REFERENCES:
patent: 3805533 (1974-04-01), Askey et al.
patent: 4419805 (1983-12-01), Calandra, Jr.
patent: 4865489 (1989-09-01), Stankus et al.
patent: 5064311 (1991-11-01), Giroux et al.
patent: 5064312 (1991-11-01), Calandra et al.
patent: 5152649 (1992-10-01), Popp
patent: 5584608 (1996-12-01), Gillespie
patent: 5624212 (1997-04-01), Gillespie
patent: 7073982 (2006-07-01), Stankus et al.
patent: 2005/0134104 (2005-06-01), Simmons et al.

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