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公开(公告)号：US20200157939A1
公开(公告)日：2020-05-21
申请号：US16634238
申请日：2017-09-14
发明人： Brendan Robert CROMPTON , Cornelius Adriaan NIEUWENHUIS , James William SHEPPARD , Henri VISSER
IPC分类号： E21D21/00
摘要： Disclosed is a grout anchored rock bolt which includes an elongate cylindrical body of a suitable material which has at least one integral anchor portion which includes of a plurality projection, each of which extends laterally from the body in at least one radial direction, wherein the projections are consecutively serially arranged along the length of the anchor portion and wherein each projection is radially offset relatively to the preceding formation at an angle that is not orthogonal.
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公开(公告)号：US20200088032A1
公开(公告)日：2020-03-19
申请号：US16616835
申请日：2018-06-08
摘要： Disclosed is a centralising positioner for a resin bolt which includes a central attachment part which is adapted to engage a leading end of the bolt and a positioning part integral with the attachment part that extends from the attachment part.
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公开(公告)号：US20200088031A1
公开(公告)日：2020-03-19
申请号：US16616829
申请日：2018-06-07
摘要： Disclosed is a resin bolt which includes an elongate shaft which extends between a leading end and a trailing end and a positioning head which is integral to the shaft at the leading end and which extends in the elongate axis of the shaft from a perimeter rim to a crown, with the head formed with a plurality of projections, with each projection extending laterally, beyond the radial dimension of the shaft and each projection having a leading surface which slopes, at least partially, from the crown to the perimeter rim, and a trailing surface from the perimeter rim to the shaft.
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