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公开(公告)号：US10770868B1
公开(公告)日：2020-09-08
申请号：US16841991
申请日：2020-04-07
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Tatsuya Gozawa
Abstract: A spark plug wherein both pre-ignition and misfires are suppressed. The spark plug includes a center electrode; a ground electrode; a cylindrical insulator; a metal shell that accommodates the insulator therein; and a cover portion that covers a front end portion of the center electrode and a facing portion of the ground electrode to form a pre-chamber. The insulator includes an outer peripheral surface exposed to the pre-chamber, the cover portion includes a portion exposed to the pre-chamber, and the metal shell includes a portion exposed to the pre-chamber. When a surface area of the outer peripheral surface is a first surface area A (mm2), and a total surface area of the portion of the cover portion and the portion of the metal shell is a second surface area B (mm2), the spark plug satisfies a relational expression 1:0.10
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公开(公告)号：US20200271040A1
公开(公告)日：2020-08-27
申请号：US16749598
申请日：2020-01-22
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Kouji OGAWA , Ayaka OTA , Hideya INUKAI , Yasuhiro ISHIGURO
IPC: F01N11/00
Abstract: A sensor including a sensor element, a metallic shell, a terminal fitting, a cylindrical case, lead wires, a connector portion, and a cylindrical heat shield tube. The heat shield tube includes a first tube and a second tube. The second tube is disposed on a distal end side of the first tube and covers an outer surface of the rear end side of the case, while providing an overlapping portion that overlaps the first tube. A rear end side of the first tube is adjacent to the connector portion. A total length T of the heat shield tube and a length S of the overlapping portion satisfy T/10≤S ≤T/5. Further, a length L1 of the first tube and a length L2 of the second tube satisfy T/2≤L2
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公开(公告)号：US10756517B1
公开(公告)日：2020-08-25
申请号：US16837154
申请日：2020-04-01
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Yusuke Kawamura , Shunsuke Tsuga
Abstract: A spark plug that provides an increase in the combustion speed of an engine. The spark plug includes a center electrode, a ground electrode, an insulator, and a cover portion. In a cross-sectional area of a region surrounded by an inner wall surface of the cover portion in a cross section taken along a plane perpendicular to an axial line CX of the spark plug, the cover portion includes: a narrow portion positioned on the front end side with respect to the ground electrode in the direction of the axial line CX and narrowed such that the cross-sectional area is smallest; and a cover front portion positioned on the front end side of the narrow portion and having the cross-sectional area that is larger than the cross-sectional area of the narrow portion and that is largest at the front end of the cover front portion.
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公开(公告)号：US10755959B2
公开(公告)日：2020-08-25
申请号：US15600897
申请日：2017-05-22
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Atsutoshi Iwabuchi , Shinya Kikuchi
IPC: H01L21/683 , B25J15/06 , B65G47/91 , H01L21/687 , B65G49/06
Abstract: A substrate holding device includes a base body that has a flat plate-like shape and that includes gas passages that open in an upper surface of the base body, and a plurality of protrusions that protrude from the upper surface of the base body. At least an upper part of each of the protrusions has a conical frustum shape having a base angle of 70° or more and 85° or less.
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公开(公告)号：US10748805B2
公开(公告)日：2020-08-18
申请号：US15960853
申请日：2018-04-24
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Shinya Kikuchi
IPC: H01L21/683 , B25B11/00 , H01L21/687
Abstract: A substrate is arranged above a base body such that the substrate comes into contact with an upper end of a support member. Subsequently, vacuum suction is performed on an internal space of the support member through an auxiliary vacuum suction path so that the upper end of the support member is displaced to a height position equal to the height positions of upper ends of multiple protruding portions. Then, vacuum suction is performed, through a vacuum suction path, on a space of which the top and the bottom are defined by the base body and the substrate so that the substrate is brought into contact with the upper ends of the multiple protruding portions.
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Patent Agency Ranking
公开(公告)号：US10746689B2
公开(公告)日：2020-08-18
申请号：US15899184
申请日：2018-02-19
Applicant: NGK Spark Plug Co., LTD.
Inventor： Yuzo Higuchi , Satoru Abe , Koji Ishibashi
IPC: G01N27/406 , G01N27/419 , G01N27/407 , G01N27/417 , G01N33/00 , G01N27/414 , G01N27/12
Abstract: A sensor element drive circuit is a circuit including a plurality of semiconductor elements formed on a semiconductor substrate for realizing a current control function and a switching function. The current control function is a function of controlling the current flowing between electrodes such that the potential difference between electrodes becomes constant. The switching function is a function for switching between a connected state in which the electrodes are electrically connected to a sensor control apparatus and a cut-off state in which electrical continuity therebetween is broken. When one of an Ip+ terminal, a COM terminal, and a Vs+ terminal is determined to have an anomalous potential, the sensor control apparatus causes the sensor element drive circuit to perform switching from the connected state to the cut-off state, and connects the semiconductor substrate to a negative voltage lower than a ground potential applied to the sensor element drive circuit.
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公开(公告)号：US20200235019A1
公开(公告)日：2020-07-23
申请号：US16717092
申请日：2019-12-17
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takayuki MIYAJI
IPC: H01L23/053 , H05K1/11 , H01L23/00 , H02H9/00
Abstract: A package has a package body formed by stacked insulating layers and having a front surface including a mounting area, a back surface and a side surface; a plurality of hollow portions arranged so as to be adjacent to each other on the front surface of the package body; a plurality of electrode pads individually placed on respective bottom surfaces of the hollow portions; and a partition wall formed by at least one insulating layer that forms the package body and having protruding banks at its both edge sides. Surfaces of the electrode pads are located at a lower position with respect to the front surface of the package body. The hollow portions are arranged at opposite sides of the partition wall. The electrode pads are electrically connected to respective conductor layers that are formed on the back surface and/or the side surface of the package body.
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公开(公告)号：US10720759B2
公开(公告)日：2020-07-21
申请号：US16494331
申请日：2017-08-08
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Susumu Imai
Abstract: The spark plug includes an insulator, a metal shell, and a buffering member. The buffering member is filled in a space that is enclosed by an inner peripheral surface of the metal shell and an outer peripheral surface of the insulator. 3 mm2≤L×T is satisfied in a case where: a length in a direction of an axial line of a filled portion filled with the buffering member is defined as a filling length L; a thickness, of a screw portion of the metal shell, that is half a difference left after subtraction of the inner diameter of the metal shell from the pitch diameter of the screw portion is defined as an effective thickness; and a minimum value of the effective thickness of a portion, of the screw portion, present rearward of an inner diameter reduction portion of the metal shell is defined as a minimum thickness T.
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公开(公告)号：US10714906B1
公开(公告)日：2020-07-14
申请号：US16843200
申请日：2020-04-08
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Kenji Ban
Abstract: A spark plug capable of facilitating the growth of a flame kernel. The spark plug including a metal shell; a center electrode retained in the metal shell in an insulated manner; a ground electrode disposed such that a spark gap is formed between the center electrode and an end portion of the ground electrode; and a plug cap that covers the center electrode and the end portion of the ground electrode from the front in a region in front of the metal shell and in which a through hole is formed. An inner surface of the plug cap in a region in front of a back end of the end portion of the ground electrode and an inner surface of the through hole each have an arithmetical mean roughness of less than or equal to 6.3 μm.
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公开(公告)号：US20200206828A1
公开(公告)日：2020-07-02
申请号：US16631305
申请日：2018-05-11
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Naoki ANDOH , Takuya HASEGAWA , Takashi FUJIMOTO
Abstract: A cutting insert has cutting edges having the same shape and provided at respective corners of a polygon in rotational symmetry about the center axis of the polygon, is clamped in an upright position to a holder, and has a negative side rake angle on a rake face of a side cutting edge. A side cutting edge is present at an intersection ridge between a polygonal face and an outer peripheral face. The outer peripheral face includes a rake face of the cutting edge and a flank of an end cutting edge of another cutting edge different from the side cutting edge. The flank has a positive slope angle in opposition to a negative side rake angle of the side cutting edge. A breaker groove extending in a front-rear direction is formed in the rake face and cuts into the flank, in such a manner as to divide the rake face.
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