发明名称 Elongate element tensioning member
摘要 An adjustable yield rock bolt that comprises an elongated tensile support member that interacts with at least one gouging member and a receiving member capable of receiving the elongated tensile support member and hold the gouging member segment there between, wherein the elongated tensile support member extends beyond the receiving member a length that corresponds to a predetermined amount of yield before ultimate failure. The bolt has adjustability by allowing for controlled yield by gouging of the elongated tensile support member for any length of displacement.
申请公布号 US7927042(B2) 申请公布日期 2011.04.19
申请号 US20050231128 申请日期 2005.09.20
申请人 ATLAS COPCO MAI GMBH 发明人 SPEARING ANTHONY JOHN SPENCER;JINGLE, JR. JOSEPH JOHN
分类号 E21B21/00 主分类号 E21B21/00
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