发明名称 CABLE BOLT HEAD
摘要 <p>A plurality of designs for mine roof bolts is disclosed. Each mine roof bolt includes a flexible multi-strand cable having a first and second end with a drive head formed on the first end, the drive head having a plurality of driving faces on an exterior surface thereof. The drive head may be formed integrally with the multi-strand cable in one embodiment of the present invention. An alternative embodiment of the present invention forms a drive head as a separate member. With a separate drive head, a barrel and wedge assembly may be attached to the cable wherein the drive head is utilized substantially for rotating the cable.</p>
申请公布号 CA2194818(C) 申请公布日期 2006.03.21
申请号 CA19972194818 申请日期 1997.01.10
申请人 JENNMAR CORPORATION 发明人 CALANDRA, FRANK, JR.;STEWART, EUGENE H.;PONCE, STANLEY;OLDSEN, JOHN G.;NESTOR, ROBERT;STANKUS, JOHN C.;CASTLE, BRIAN R.
分类号 E21D20/02;B25B29/02;E21D21/00 主分类号 E21D20/02
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