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公开(公告)号：US5283710A
公开(公告)日：1994-02-01
申请号：US24828
申请日：1993-03-01
CPC分类号： H05F3/02 , H01H19/003 , H01H9/12
摘要： An electro-static discharge shield on the external non-finger contact surface of a switch makes a contact between the shield itself and the grounded chassis. Since the shield has substantially lower resistance than the surface or inner circuitry of the switch, external electro-static discharge introduced on the surface of the switch flows through the shield to ground via the grounded chassis to prevent destruction or interruption of the circuit.
摘要翻译： 开关的外部非指接触表面上的静电放电屏蔽层在屏蔽本身与接地的底盘之间形成接触。 由于屏蔽具有比开关的表面或内部电路大得多的电阻，所以引入到开关表面上的外部静电放电通过接地的底盘流过屏蔽到地，以防止电路的破坏或中断。
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公开(公告)号：US4825454A
公开(公告)日：1989-04-25
申请号：US137982
申请日：1987-12-28
IPC分类号： A61B6/02 , G21K1/02 , G01N23/201
摘要： An X-ray imaging apparatus comprising an X-ray source, a collimator, and an X-ray scatter detector. The X-rays are directed toward an object to be imaged where the collimator and detector are located between the source and object. The X-rays striking the object produce back scattered X-rays which are directed back through the collimator to the detector and an image is produced.
摘要翻译： 一种X射线成像装置，包括X射线源，准直仪和X射线散射检测器。 X射线被引导到准直仪和检测器位于源和物体之间的成像对象。 撞击物体的X射线产生反向散射的X射线，其被引导回准直仪到检测器并产生图像。
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公开(公告)号：US11299953B2
公开(公告)日：2022-04-12
申请号：US16399558
申请日：2019-04-30
申请人： Michael Johnson , Matthew Stone , Colin Andrew
发明人： Michael Johnson , Matthew Stone , Colin Andrew
摘要： An apparatus includes a housing configured to be disposed in a borehole in a resource bearing formation, the housing including an axially extending fluid conduit configured to receive borehole fluid, and a seating assembly including a convertible component that is configured to be actuated to move the convertible component in a radial direction between an open position and a seating position. The convertible component extends radially into the fluid conduit and forms a landing seat for an object when in the seating position, and the convertible component allows passage of the object therethrough when in the open position.
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公开(公告)号：US11168561B2
公开(公告)日：2021-11-09
申请号：US16216408
申请日：2018-12-11
申请人： Lei Fang , Michael Johnson , Herb Dhuet , Roger Steinsiek
发明人： Lei Fang , Michael Johnson , Herb Dhuet , Roger Steinsiek
IPC分类号： E21B47/09 , E21B47/16 , E21B47/095
摘要： An apparatus for determining a location of a downhole component includes at least one transmitter device and a receiver device. One of the at least one transmitter device and the receiver device is disposed at a first component of a borehole string configured to be deployed in a borehole and retained at a stationary position, and another of the at least one transmitter device and the receiver device is disposed at a moveable component configured to be moved while the first component is at the stationary position, the at least one transmitter device configured to emit a wireless signal and the receiver device configured to detect the wireless signal when the first component is at the stationary position. The apparatus also includes a processing device configured to receive signal data and estimate a location of the moveable component relative to the first component based on the signal data.
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公开(公告)号：US10975646B2
公开(公告)日：2021-04-13
申请号：US16046837
申请日：2018-07-26
申请人： YingQing Xu , Michael Johnson , Matthew Stone , Colin Andrew , Zhiyue Xu
发明人： YingQing Xu , Michael Johnson , Matthew Stone , Colin Andrew , Zhiyue Xu
摘要： An object removal enhancement arrangement including a seat, a volume movable with the seat, the volume being protected in a first condition of the seat and unprotected in a second condition of the seat, and a material disposed within or as a part of the volume, the material degradative of an object.
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公开(公告)号：US10794142B2
公开(公告)日：2020-10-06
申请号：US15969599
申请日：2018-05-02
申请人： Matthew Stone , Michael Johnson , Colin Andrew , Keith J. Murphy
发明人： Matthew Stone , Michael Johnson , Colin Andrew , Keith J. Murphy
摘要： A plug seat including a body having a lead in and a tooth, a flow feature disposed at the body, the feature providing fluid access directly to an area immediately adjacent the tooth. A plug seat including a tooth positioned relative to a body to be at an upstream most end of the body, a cage extending from the body immediately downstream of the tooth to an area radially outward of the tooth and upstream thereof.
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公开(公告)号：US20200032600A1
公开(公告)日：2020-01-30
申请号：US16047923
申请日：2018-07-27
申请人： YingQing Xu , Michael Johnson , Matthew Stone , Colin Andrew , Zhiyue Xu
发明人： YingQing Xu , Michael Johnson , Matthew Stone , Colin Andrew , Zhiyue Xu
摘要： An object seat including a seat host having a seal bore therein, a seat body dimensioned to be receivable in the seal bore, the seat body having an object receptor. A method for carrying out a pressure operation in a borehole including seating an object on an object receptor of a seat body, the seat body disposed in a seat host, the seat host disposed in the borehole, pressuring against the object, and moving the seat body along an interface between the seat body and the seat host to create a fluid flow pathway through the seat body and seat host interface. A borehole system including a borehole in a formation, an object seat as in any prior embodiment disposed in the borehole.
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公开(公告)号：US10513333B2
公开(公告)日：2019-12-24
申请号：US15603195
申请日：2017-05-23
申请人： Michael Johnson
发明人： Michael Johnson
摘要： A propulsion engine for an aircraft comprises an enclosure having a longitudinal axis oriented in a direction of travel of an aircraft, the enclosure including a series of walls and a plurality of ducts arranged along the longitudinal axis. Each of the ducts including a number of walls that are either dynamic or static in movement. Each of the ducts includes a central axis that is angled at, or can be adjusted to, an angle toward the front wall of the enclosure such that a top end of each duct is toward the front wall of the enclosure. A fan is disposed in each of the ducts configured to generate airflow along the respective central axes from the top end to the bottom end to provide lift and thrust to the aircraft.
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公开(公告)号：US20190211667A1
公开(公告)日：2019-07-11
申请号：US16216408
申请日：2018-12-11
申请人： Lei Fang , Michael Johnson , Herb Dhuet , Roger Steinsiek
发明人： Lei Fang , Michael Johnson , Herb Dhuet , Roger Steinsiek
CPC分类号： E21B47/091 , E21B47/16
摘要： An apparatus for determining a location of a downhole component includes at least one transmitter device and a receiver device. One of the at least one transmitter device and the receiver device is disposed at a first component of a borehole string configured to be deployed in a borehole and retained at a stationary position, and another of the at least one transmitter device and the receiver device is disposed at a moveable component configured to be moved while the first component is at the stationary position, the at least one transmitter device configured to emit a wireless signal and the receiver device configured to detect the wireless signal when the first component is at the stationary position. The apparatus also includes a processing device configured to receive signal data and estimate a location of the moveable component relative to the first component based on the signal data.
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公开(公告)号：US10335858B2
公开(公告)日：2019-07-02
申请号：US15178882
申请日：2016-06-10
申请人： Zhiyue Xu , Michael Johnson
发明人： Zhiyue Xu , Michael Johnson
IPC分类号： E21B33/12 , B22F7/04 , E21B23/00 , E21B29/00 , B22F7/06 , B05D7/14 , B22F7/02 , E21B17/00 , E21B34/06 , B22F5/00 , B33Y80/00 , E21B34/00
摘要： A method of making a composite downhole article is disclosed. The method include forming at least one removable core member comprising a first metallic material that is removable in a wellbore fluid at a first removal rate; and disposing at least one outer member on the core member, the outer member comprising a second material that is removable in the wellbore fluid at a second removal rate, wherein the removable core member has a composition gradient or a density gradient, or a combination thereof, and wherein the first removal rate is substantially greater than the second removal rate. A method of using a composite downhole article is also disclosed. The method includes forming a composite downhole article as described above; using the article to perform a first wellbore operation; exposing the article to the wellbore fluid; and selectively removing the second removable member.
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