公开(公告)号：US20150198042A1

公开(公告)日：2015-07-16

申请号：US14610148

申请日：2015-01-30

申请人： FCI Holdings Delaware, Inc.

发明人： Arthur J. Craven ,  Daniel Leon Seegmiller

IPC分类号： E21D21/00 ,  E21D20/00

CPC分类号： E21D21/004 ,  E21D20/00 ,  E21D21/0026 ,  E21D21/0033 ,  E21D21/0073 ,  Y10T29/49918

摘要： The present invention includes a rock bolt having a longitudinally expandable tube. The tube includes a longitudinally extending depression that defines a temporary enclosed longitudinal passageway. The rock bolt further includes a shielded distal end to prevent debris from entering the temporary enclosed longitudinal passageway. The distal end is shielded using a cover which may be a plug or a cap and may provide a rounded tip for the rock bolt. The plug may be spherical. The cap may be attached such that its proximal end abuts the distal end of the rock bolt, is inserted into the distal end of the rock bolt, or extends beyond the distal end and along the sidewall of the rock bolt. The present invention also includes a method of making such a rock bolt and a method of using such a rock bolt.

摘要翻译： 本发明包括具有纵向可膨胀管的岩石栓。 管包括纵向延伸的凹部，其限定临时封闭的纵向通道。 岩石螺栓还包括屏蔽的远端，以防止碎屑进入临时封闭的纵向通道。 远端使用可以是塞子或盖子的盖子来屏蔽，并且可以为岩石螺栓提供圆形的尖端。 塞子可以是球形的。 盖可以被附接成使得其近端邻接岩石锚杆的远端，插入到岩石锚杆的远端中，或者延伸超过岩石锚杆的远端和侧壁。 本发明还包括制造这种岩石锚杆的方法和使用这种岩石锚杆的方法。