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    Improved Turbine
    2.
    发明申请
    Improved Turbine 审中-公开
    改进的涡轮机

    公开(公告)号：US20160102499A1

    公开(公告)日：2016-04-14

    申请号：US14786796

    申请日：2014-04-25

    申请人： ROTECH GROUP LIMITED

    发明人： Kenneth Roderick Stewart ,  Donald Stewart

    IPC分类号： E21B4/02 ,  E21B3/00 ,  F03B13/02

    CPC分类号： E21B4/02 ,  E21B3/00 ,  F03B13/02 ,  F05B2210/403 ,  F05B2240/33

    摘要： An improved turbine or motor, such as a fluid or liquid driven turbine or motor or hydraulic turbine or motor including a downhole turbine for the oil/gas and geothermal industries, such as a drilling turbine or downhole drilling turbine. The turbine or motor provides a fluid passage comprising at least one portion or zone arranged to cause a drive fluid to be moved or diverted, such as at least partly radially. The turbine or motor may comprise a rotor having a rotor blade extending within the fluid passage. The turbine or motor may comprise a stator having a stator blade extending within the fluid passage. The stator (30) may comprise or define at least part of the at least one portion or zone configured or arranged to cause the fluid to be moved in or diverted from an at least part axial path to an at least part radial path or radially inward path.

    摘要翻译： 改进的涡轮机或电动机，例如流体或液体驱动的涡轮机或电动机或水轮机或电动机，其包括用于油/气和地热工业的井下涡轮机，例如钻井涡轮机或井下钻井涡轮机。 涡轮或马达提供流体通道，其包括布置成使得驱动流体被移动或转向的至少一个部分或区域，例如至少部分地径向。 涡轮或马达可以包括具有在流体通道内延伸的转子叶片的转子。 涡轮或马达可以包括具有在流体通道内延伸的定子叶片的定子。 定子（30）可以包括或限定至少一个部分或区域的至少一部分，所述至少一个部分或区域被构造或布置成使流体从至少部分轴向路径移动或转移到至少部分径向路径或径向向内 路径。

    UNDERWATER EXCAVATION APPARATUS
    3.
    发明申请
    UNDERWATER EXCAVATION APPARATUS 有权

    公开(公告)号：US20230045315A1

    公开(公告)日：2023-02-09

    申请号：US17973367

    申请日：2022-10-25

    申请人： Rotech Group Limited

    发明人： Kenneth Roderick Stewart ,  Donald Stewart

    IPC分类号： E02F3/92 ,  F04D29/18 ,  F04D29/52 ,  F04D29/66 ,  E02F3/88 ,  E02F5/10 ,  E02F9/00 ,  E02F3/00

    摘要： There is disclosed an excavation apparatus (5), such as an underwater excavation apparatus, having means for producing, in use, at least one vortex, spiral or turbulent flow in a laminar flow of fluid, e.g. water. The excavation apparatus (5) comprises a rotor (10) having a rotor rotation axis (A), wherein, in use, flow of fluid passed or across the rotor (10) is at a first angle (α) from the axis of rotation (A). The excavation apparatus (5) comprises the rotor (10) and means or an arrangement for dampening reactive torque on the apparatus (5) caused by rotation of the rotor (10), in use. The turbulent flow is provided within, such as within a (transverse) cross-section, of the laminar flow.

    UNDERWATER EXCAVATION APPARATUS
    4.
    发明申请
    UNDERWATER EXCAVATION APPARATUS 有权

    公开(公告)号：US20230138350A1

    公开(公告)日：2023-05-04

    申请号：US17973241

    申请日：2022-10-25

    申请人： Rotech Group Limited

    发明人： Kenneth Roderick Stewart ,  Donald Stewart

    IPC分类号： E02F3/92 ,  F04D29/18 ,  F04D29/52 ,  F04D29/66 ,  E02F3/88 ,  E02F5/10 ,  E02F9/00 ,  E02F3/00

    摘要： “There is disclosed an excavation apparatus (5), such as an underwater excavation apparatus, having means for producing, in use, at least one vortex, spiral or turbulent flow in a laminar flow of fluid, e.g. water. The excavation apparatus (5) comprises a rotor (10) having a rotor rotation axis (A), wherein, in use, flow of fluid passedpast or across the rotor (10) is at a first angle (α) from the axis of rotation (A). The excavation apparatus (5) comprises the rotor (5) and means or an arrangement for dampening reactive torque on the apparatus (5) caused by rotation of the rotor (10), in use. The turbulent flow is provided within, such as within a (transverse) cross-section, of the laminar flow.”

    IMPROVEMENTS IN AND RELATING TO UNDERWATER EXCAVATION APPARATUS
    5.
    发明申请
    IMPROVEMENTS IN AND RELATING TO UNDERWATER EXCAVATION APPARATUS 有权

    公开(公告)号：US20210047800A1

    公开(公告)日：2021-02-18

    申请号：US17049305

    申请日：2019-04-05

    申请人： Rotech Group Limited

    发明人： Donald Stewart

    IPC分类号： E02F3/92

    摘要： An excavation apparatus comprises a controlled flow underwater excavation apparatus. A housing thereof comprises at least one inlet and at least one outlet. The at least one inlet is provided on or at a side of the housing. A fluid flow path extends from the/each at least one inlet to the outlet. The fluid flow path comprises a first portion provided at or adjacent the/each at least one inlet. The first portion is included at a non-300 angle, e.g. is substantially perpendicular, to or converges towards a longitudinal axis of the housing and substantially straight. A second portion extends or continues from the first portion. A third portion extends or continues from the second portion. The third portion is substantially straight, contains at least part of a rotor, and is divergent away from the longitudinal axis of the housing in a flow direction from the inlet to the outlet.

    CUTTING TOOL
    6.
    发明申请
    CUTTING TOOL 审中-公开

    公开(公告)号：US20190134724A1

    公开(公告)日：2019-05-09

    申请号：US16182794

    申请日：2018-11-07

    申请人： Rotech Group Limited

    发明人： Donald Stewart

    IPC分类号： B23D33/02 ,  B23D35/00 ,  B23D21/00 ,  B63C11/52

    摘要： An underwater tool (5; 205; 305) including a grabber arrangement (15; 215; 315) and a cutter arrangement (20; 220; 320) connected together. The grabber arrangement comprises a plurality of grabber elements (30; 230; 330) disposed on first and second sides (35a; 235a; 335a; 35b; 235b; 335b) of the tool. The cutter arrangement includes a cutter slot (75; 275; 375), an anvil (80; 280; 380) movable to close the slot comprises an anvil and a cutter blade (90; 290′; 390). In use, a cable (10; 210; 310) is held by the grabber arrangement, and thereby moved into the slot which is then closed by the anvil so as to entrap the cable within the slot. The cutter blade is then driven against the anvil so as to cut the cable.