Disclosed is a mine roof bolt comprising: an elongated rod having a first end and a second end; and a segmented resin compression layer covering at least a portion of said elongated rod between said first end and said second 5 end. The segmented layer comprises a plurality of tapered segments, each segment having a first portion that is thicker than a second portion such that each segment tapers only in the direction of said second end. The first end does not incorporate an expansion assembly positioned on a thread formed on said first end. 5576662_1 (GHMatters) P58549.AU.2 ANNIES
申请公布号
AU2014204423(A1)
申请公布日期
2014.07.31
申请号
AU20140204423
申请日期
2014.07.15
申请人
FCI HOLDINGS DELAWARE, INC;SIMMONS, W;SIMMONS, WALTER
发明人
OLDSEN, JOHN G.;SIMMONS, WALTER J.;STANKUS, JOHN C.;SIMMONS, W. NEAL