发明名称 Mine roof bolt with resin control surface
摘要 A resin bonded mine roof bolt having an elongated rod with a first end, a second end, and a resin control surface positioned on the rod between the rod first and second ends. The resin control surface has a channel extending along the length of the bolt for distributing resin and interrupted spiral threads for mixing resin. When installed in a mine roof bore hole with curable resin, the resin control surface mixes the resin and partially fills the bore hole to minimize the amount of resin needed to anchor the bolt.
申请公布号 ZA200906451(B) 申请公布日期 2010.07.28
申请号 ZA20090006451 申请日期 2009.09.16
申请人 JENNMAR CORPORATION 发明人 SIMMONS, WALTER J.;SIMMONS, WALTER, N.;OLDSEN, JOHN G.
分类号 E21D 主分类号 E21D
代理机构 代理人
主权项
地址