Patents Assigned to Rise Mining Development Pty Ltd
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Patent number: 11150068Abstract: A stemming plug (60) for stemming a blast hole in a mine is disclosed. The plug has first and second wedge-shaped members (62?, 62) manufactured from a suitable plastics material. The first wedge-shaped member (62?) has a first sloping face received in sliding relationship with a matching face of the second wedge-shaped member (62) wherein, in use, when the first wedge-shaped member (62?) is positioned nearest to an explosive material in the blast hole it has a larger surface area facing the explosive material than the second wedge-shaped member (62). In use, when a Shockwave from initiation of the explosive material in the blast hole encounters the first wedge-shaped member (62?) it acts as a piston, sliding on the second wedge-shaped member (62) so that both wedge-shaped members exert diametrically opposed forces against the wall of the blast hole to lock the plug (60) in place. The two wedge-shaped members (62?, 62) may be substantially identical, thus significantly simplifying the manufacturing process.Type: GrantFiled: November 20, 2017Date of Patent: October 19, 2021Assignee: Rise Mining Development Pty LtdInventor: Jeffrey Bruce Phillips
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Publication number: 20200072588Abstract: A stemming plug (60) for stemming a blast hole in a mine is disclosed. The plug has first and second wedge-shaped members (62?, 62) manufactured from a suitable plastics material. The first wedge-shaped member (62?) has a first sloping face received in sliding relationship with a matching face of the second wedge-shaped member (62) wherein, in use, when the first wedge- shaped member (62?) is positioned nearest to an explosive material in the blast hole it has a larger surface area facing the explosive material than the second wedge-shaped member (62). In use, when a Shockwave from initiation of the explosive material in the blast hole encounters the first wedge-shaped member (62?) it acts as a piston, sliding on the second wedge-shaped member (62) so that both wedge-shaped members exert diametrically opposed forces against the wall of the blast hole to lock the plug (60) in place. The two wedge-shaped members (62?, 62) may be substantially identical, thus significantly simplifying the manufacturing process.Type: ApplicationFiled: November 20, 2017Publication date: March 5, 2020Applicant: Rise Mining Developments Pty LtdInventor: Jeffrey Bruce PHILLIPS
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Patent number: 10577886Abstract: A plug (10) for blocking off mining exploration drill holes. The plug (10) comprises an elongate body (12) of solid impervious material, and an engineered surface (14) is provided on an external circumference of the elongate body (12). The engineered surface (14) comprises an annular anchoring groove (16) having a ramp (18) extending from a maximum diameter to a minimum diameter of the engineered surface (14) in a braking direction, in which it is intended to prevent movement of the plug (10) in the drill hole. The plug (10) also comprises an O-ring (20) received in the anchoring groove (16) and having a thickness whereby it protrudes slightly above the maximum diameter of the engineered surface (14) and engages with a wall (22) of the drill hole.Type: GrantFiled: December 22, 2014Date of Patent: March 3, 2020Assignee: Rise Mining Developments Pty LtdInventor: Jeffrey Bruce Phillips
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Publication number: 20160209196Abstract: A stemming plug (10) for stemming a blast hole in a mine, the plug (10) comprising an active wedge-shaped member (12) having a sloping face received in sliding relationship with a matching face of a passive wedge-shaped member (14). In use, the active wedge-shaped member (12) is positioned nearest to an explosive material in the blast hole and the passive wedge-shaped member (14) is positioned further from the explosive material in the blast hole. The active wedge-shaped member (12) has a friction reducing material provided on at least part of its surface to reduce the sliding resistance of the active wedge-shaped member (12) relative to the passive wedge-shaped member (14); whereby, in use, when a shockwave from initiation of the explosive material in the blast hole encounters the active wedge-shaped member (12) it acts as a piston, sliding on the passive wedge-shaped member (14) so that both wedge-shaped members exert diametrically opposed forces against a wall of the blast hole and are locked in place.Type: ApplicationFiled: September 11, 2014Publication date: July 21, 2016Applicant: Rise Mining Developments Pty Ltd.Inventor: Jeffrey Bruce PHILLIPS