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公开(公告)号：USRE48979E1
公开(公告)日：2022-03-22
申请号：US16150875
申请日：2018-10-03
发明人： David R. Hall , Jonathan Marshall
摘要： A piston assembly may comprise a housing with a wall, and at least one chamber formed in the wall. A piston may be disposed within the chamber and at least one passageway may pass through the piston. At least one pin may be disposed within the passageway and attached to the chamber, and the piston may be free to translate relative to the pin.
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公开(公告)号：US20210172296A1
公开(公告)日：2021-06-10
申请号：US17180974
申请日：2021-02-22
发明人： David R. Hall , Jonathan D. Marshall , David C. Hoyle , Malcolm R. Taylor , Jordan Dane Englund
摘要： A valve includes an exterior body and an interior body. The exterior body includes an ultrahard material, at least one exterior inlet, at least one exterior outlet, and a chamber inside the exterior body and in fluid communication with the exterior inlet and the exterior outlet. The interior body is located in the chamber within the exterior body and is moveable relative to the exterior body from an open configuration to a closed configuration. The interior body includes an ultrahard material, at least one interior inlet, and at least one interior outlet.
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公开(公告)号：US10711833B2
公开(公告)日：2020-07-14
申请号：US15761924
申请日：2016-09-15
摘要： A mechanical bearing includes a hard bearing element and a support element affixed to the hard bearing element, with a joining element between the hard bearing element and the support element, the joining element being more flexible than the hard bearing element and the support element.
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公开(公告)号：US10439474B2
公开(公告)日：2019-10-08
申请号：US15352620
申请日：2016-11-16
摘要： A turbine includes a rotor. The rotor is connected to at least one blade. The blade is at least partially ultrahard material.
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公开(公告)号：US10378288B2
公开(公告)日：2019-08-13
申请号：US15651308
申请日：2017-07-17
IPC分类号： E21B10/43 , E21B10/55 , E21B10/573 , E21B10/567 , E21B10/42 , E21B10/54
摘要： A downhole cutting tool may include a tool body, a plurality of blades extending from the tool body, and a plurality of cutting elements coupled to the blades. The plurality of cutting elements may include one or more cutting elements having a working end of a first geometry (e.g., a pointed geometry) and one or more cutting elements having a working end of a second geometry (e.g., a planar geometry).
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公开(公告)号：USRE47405E1
公开(公告)日：2019-05-28
申请号：US15164663
申请日：2016-05-25
发明人： David R. Hall , Jonathan Marshall
摘要： A piston assembly may comprise a housing with a wall, and at least one chamber formed in the wall. A piston may be disposed within the chamber and at least one passageway may pass through the piston. At least one pin may be disposed within the passageway and attached to the chamber, and the piston may be free to translate relative to the pin.
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公开(公告)号：US10215000B2
公开(公告)日：2019-02-26
申请号：US15122264
申请日：2015-03-03
发明人： Benjamin P. Lindow , David R. Hall
摘要： A power controller includes at least a first and a second power supply each having a positive and a negative output terminal. A voltage measuring circuit is coupled to the positive and negative output terminals of at least one of the power supplies. A main switching element is coupled between the negative output terminal of the first power supply and the positive output terminal of the second power supply. The positive output terminal of the first power supply and the negative output terminal of the second power supply are connected to an electrical load. A pair of diodes is serially connected across the electrical load. The voltage measuring circuit is configured to close the main switching element when a measured voltage exceeds a selected threshold such that the first power supply and the second power supply are connected to the electrical load in parallel when the main switching element is closed.
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公开(公告)号：US20180320740A1
公开(公告)日：2018-11-08
申请号：US16040182
申请日：2018-07-19
发明人： David R. Hall , Jonathan D. Marshall , Scott S. Dahlgren , Daniel Manwill , R. Craig Boswell , Scott Richard Woolston
CPC分类号： F16C33/043 , E21B4/003 , E21B4/006 , E21B41/00 , F16C17/02 , F16C17/12 , F16C29/02 , F16C2206/04 , F16C2352/00 , F16C2361/61 , F16C2361/91 , F16C2380/26
摘要： Aspects of the disclosure can relate to an apparatus including a first member having a first bearing surface formed from a hard material (e.g., a diamond-based material, such as a polycrystalline diamond material), and a second member coupled to an input shaft to translate (e.g., rotate, slide, etc.) with respect to the first member. The second member has a second bearing surface formed from a hard material, and the second bearing surface is to bear against the first bearing surface. In embodiments of the disclosure, the first and second members can be for devices including, but not necessarily limited to: solenoids, generators and/or motors (e.g., out-runner radial flux generators, axial flux generators, radial flux generators/motors, roller vane motors, etc.), gearboxes, rotary data swivels, digital actuators, filters (e.g., inner rotating filters), valves (e.g., proportional valves), sensors (e.g., pressure differential sensors), and so forth.
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公开(公告)号：US09890636B2
公开(公告)日：2018-02-13
申请号：US14282813
申请日：2014-05-20
发明人： David R. Hall , Francis Leany , John J. Pierce , Youhe Zhang , Yuri Burhan
IPC分类号： E21C35/197 , B28D1/18
CPC分类号： E21C35/197 , B28D1/188
摘要： A cutting element assembly includes a cutting element partially disposed within a support and a retention mechanism disposed between the cutting element and the support, both the axial and radial dimensions of the retention mechanism being deformable.
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公开(公告)号：US09708856B2
公开(公告)日：2017-07-18
申请号：US14717567
申请日：2015-05-20
IPC分类号： E21B10/43 , E21B10/55 , E21B10/573 , E21B10/567 , E21B10/42 , E21B10/54
CPC分类号： E21B10/55 , E21B10/43 , E21B10/5673 , E21B10/5735 , E21B2010/425 , E21B2010/545
摘要： A downhole cutting tool may include a tool body; a plurality of blades extending from the tool body; a first blade comprising at least one pointed cutting element thereon, the at least one pointed cutting element comprising a first polycrystalline diamond material on a first carbide substrate, the first polycrystalline diamond material extending away from the first carbide substrate to terminate in a substantially pointed geometry opposite the first carbide substrate; a second blade comprising at least one shear cutting element, the at least one shear cutting element comprising a second polycrystalline diamond material on a second carbide substrate, the second polycrystalline diamond material forming a planar cutting surface opposite the substrate; wherein, when the first blade and the second blade are superimposed on each other, a central axis of the at least one pointed cutting element is offset from a central axis of the at least one shear cutting element.
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