发明名称 POINT ANCHOR COATED MINE ROOF BOLT
摘要 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
分类号 E21D21/00;E21D20/02 主分类号 E21D21/00
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