Rock bolt

Details Rock bolt Rock bolt

2005-12-16

2008-03-04

Lagman, Frederick L. (Department: 3672)

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

C405S259500

Reexamination Certificate

active

07338234

ABSTRACT:
A rock bolt (1) comprises a tubular body (4) defining a tubular bore (5) for receiving an adhesive or cement filled cartridge (18). A plug (8) is mounted in the bore (5). The plug (8) is displaceable along the bore (5) and sealingly engages the tubular body (4). A bolt head (7) is located at or adjacent a second end (3) of the rock bolt (1). A detent arrangement (10, 12) restrains the plug (8) in a position adjacent an opening at the first end (2) of the rock bolt (1).

REFERENCES:
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patent: 2001/0028833 (2001-10-01), Sager et al.
patent: 2003/0219316 (2003-11-01), Rataj
patent: 2004/0161316 (2004-08-01), Locotos et al.
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patent: 2004201671 (2004-05-01), None
patent: 0 251 887 (1988-01-01), None
patent: 1580024 (1990-07-01), None
patent: WO-96/07015 (1996-03-01), None
patent: WO-03/044324 (2003-05-01), None
patent: WO-2004/055326 (2004-07-01), None

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