Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Reexamination Certificate
2005-04-19
2005-04-19
Singh, Sunil (Department: 3673)
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
C411S410000, C411S267000
Reexamination Certificate
active
06881015
ABSTRACT:
A mine roof bolt for use with a cable comprises a barrel having a first end and a second end, the second end having a rounded surface, a bore extending through the barrel between the first end and the second end and including a tapered portion, the bore sized to receive the cable, a pair of wedges sized for placement in the tapered portion of the bore and adapted to frictionally engage a cable disposed in the tapered portion of the bore, a recess defined in the first end of the barrel, and a driving nut sized for insertion in the recess and adapted for engagement by a driving tool.
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Brady Steven
Brandon Raymond
Walker Roland
Wallstein Alexander I.
Dywidag-Systems International, U.S.A., Inc.
Marshall & Gerstein & Borun LLP
Singh Sunil
LandOfFree
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