| 发明名称 | Fibre composite rod fishing tool | ||
| 摘要 | A fibre composite rod fishing tool includes a ring base with an axis and provided with peripherally arranged, axially extending radially resilient arms with slips with a common axial bore being tapered-off towards a rod receiving aperture opposite of said ring base, said common axial bore provided with teeth of common radial cutting depth, said teeth's engaging edge having the tapering off of the common axial bore, so as for the outer set of teeth's engaging edge to be most blunt, and each consecutive set of teeth's engaging edge extending higher and being sharper inwards toward the common axis, as counted in the direction away from said rod receiving aperture. | ||
| 申请公布号 | US9470056(B2) | 申请公布日期 | 2016.10.18 |
| 申请号 | US201414772649 | 申请日期 | 2014.03.07 |
| 申请人 | C6 TECHNOLOGIES AS | 发明人 | Armstrong Kenny |
| 分类号 | E21B31/12;E21B31/18 | 主分类号 | E21B31/12 |
| 代理机构 | Birch, Stewart, Kolasch & Birch, LLP | 代理人 | Birch, Stewart, Kolasch & Birch, LLP |
| 主权项 | 1. A fibre composite rod fishing tool comprising a ring base with an axis and provided with peripherally arranged, axially extending radially resilient arms with slips with a common axial bore being tapered-off towards a rod receiving aperture opposite of said ring base, wherein said common axial bore is provided with a plurality of sets teeth of common radial cutting depth, an engaging edge of each of said teeth having the tapering off of the common axial bore, an engaging edge of an uppermost set of the plurality of sets of teeth being blunt, and each consecutively lower set of the plurality of sets of teeth having an engaging edge extending higher and being sharper inwards toward the common axis, in the direction away from said rod receiving aperture than an upwardly adjacent set of the plurality of sets of teeth. | ||
| 地址 | Stavanger NO | ||