公开(公告)号：US10439368B2

公开(公告)日：2019-10-08

申请号：US16142069

申请日：2018-09-26

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Kota Nishimura ,  Norihide Kachikawa

IPC: H01T21/02 ,  H01T13/20 ,  H01T21/06

Abstract: Standard image data representing standard image including image of slit of a standard device is produced by photographing the standard device including the slit which includes a standard slit segment having a predetermined width. A width of the standard slit segment in the standard image is determined by analyzing the standard image data. Gap image data representing a gap image which is an image including an image of a discharge gap of a spark plug is produced by photographing the spark plug. A distance of the discharge gap in the gap image is determined by analyzing the gap image data. By using the distance of the discharge gap in the gap image and the width of the standard slit segment in the standard image, it is determined whether an actual distance of the discharge gap is within a predetermined allowable range or not.

公开(公告)号：US09608412B2

公开(公告)日：2017-03-28

申请号：US14294453

申请日：2014-06-03

Applicant: Robert Bosch GmbH

Inventor： Detlef Hartmann ,  Andreas Benz ,  Mario Fleischhauer ,  Jochen Fischer

IPC: H01T13/32 ,  H01T13/24 ,  H01T13/22 ,  H01T21/06 ,  H01T21/02 ,  H01T21/00 ,  H01T13/56 ,  H01T13/46

CPC classification number: H01T13/32 ,  H01T13/22 ,  H01T13/24 ,  H01T13/46 ,  H01T13/467 ,  H01T13/56 ,  H01T21/00 ,  H01T21/02 ,  H01T21/06

Abstract: A spark plug, including a central electrode, a first ground electrode, which is situated in a curved shape having a horizontal area and an essentially vertical area, and at least one second ground electrode, which is situated adjacent to the central electrode in such a way that a distance between the first ground electrode and the central electrode is less than a distance between the second ground electrode and the central electrode.

公开(公告)号：US09300116B2

公开(公告)日：2016-03-29

申请号：US14628621

申请日：2015-02-23

Applicant: Nano Spark Inc.

Inventor： Mark Farrell ,  Richard Farrell ,  Harry E. Ruda

IPC: H01T13/32 ,  H01T13/20 ,  H01T13/26 ,  H01T13/46 ,  H01T21/06 ,  H01T13/04

CPC classification number: H01T13/20 ,  H01T13/04 ,  H01T13/26 ,  H01T13/32 ,  H01T13/467 ,  H01T21/06

Abstract: The plug comprises a nut, a coupling extending from the nut and adapted to receive an ignition wire and an insulator extending from the nut and away from the coupling. A positive electrode extends through the insulator. An externally-threaded tubular portion extends from the nut in surrounding relation to the insulator and terminating, short of the insulator end, in a cap that is disposed in spaced relation to the insulator. The cap defines a void having: a central portion into which the positive electrode extends; an annular channel surrounding the central portion; and a plurality of lobes, each positioned with respect to the central portion as the planet gears are positioned with respect to the sun gear in a planetary gear. The cap has a central surface that is axially spaced from the insulator and a convex surface that surrounds and extends to the central surface.

公开(公告)号：US09270088B2

公开(公告)日：2016-02-23

申请号：US14079989

申请日：2013-11-14

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Jiro Kyuno

IPC: H01T13/60 ,  H01T21/06 ,  H04N5/372

CPC classification number: H01T13/60 ,  H01T21/02 ,  H01T21/06 ,  H04N5/372

Abstract: A method for inspecting a spark plug that includes a tubular insulator having an axial hole, a center electrode inserted into the axial hole at a front end side thereof, a tubular metallic shell disposed around the insulator, an annular space defined by an outer circumferential surface of the insulator, and an inner circumferential surface of the metallic shell and opened frontward. The method includes steps of: inspecting insulation performance of the insulator based on whether dielectric breakdown is caused in the insulator when a voltage is applied to the center electrode; photographing an area including at least the center electrode, the insulator, and the annular space from a front end side in the direction of the axis when the voltage is applied to the center electrode; and determining whether the dielectric breakdown has occurred based on the photographed image.

Abstract translation: 一种用于检查火花塞的方法，该火花塞包括具有轴向孔的管状绝缘体，插入到其前端侧的轴向孔中的中心电极，设置在绝缘体周围的管状金属壳，由外周表面限定的环形空间 的绝缘体和金属外壳的内周面向前开口。 该方法包括以下步骤：基于当对中心电极施加电压时在绝缘体中是否引起绝缘击穿，检查绝缘体的绝缘性能; 当将电压施加到中心电极时，沿着轴的方向从前端侧拍摄至少包括中心电极，绝缘体和环形空间的区域; 以及基于所拍摄的图像确定是否发生了介电击穿。

公开(公告)号：US06893310B2

公开(公告)日：2005-05-17

申请号：US09953430

申请日：2001-09-17

Applicant: Hiroshi Nakatani

Inventor： Hiroshi Nakatani

IPC: H01T13/20 ,  H01T21/06 ,  H01T21/02

CPC classification number: H01T21/06

Abstract: A spark plug gap adjustment system is provided which is designed to adjust a spark gap between a ground electrode and a center electrode installed in a spark plug to a target value. The system determines the position of the ground electrode in a given coordinate system to calculate a target distance required to move an end of the ground electrode toward an end of the center electrode for bringing the spark gap into agreement with the target value and moves the ground electrode under pressure by the target distance to define a desired spark gap. This achieves the spark gap adjustment precisely at high speeds.

Abstract translation: 提供火花塞间隙调整系统，其被设计成将接地电极和安装在火花塞中的中心电极之间的火花间隙调节到目标值。 该系统确定接地电极在给定坐标系中的位置，以计算将接地电极的端部朝向中心电极的端部移动所需的目标距离，以使火花隙与目标值一致并移动 电极在压力下由目标距离限定所需的火花间隙。 这实现了在高速下精确地进行火花隙调节。

公开(公告)号：US4868791A

公开(公告)日：1989-09-19

申请号：US163988

申请日：1988-03-04

Applicant: Dominique Cathignol ,  Bernard Lacruche

Inventor： Dominique Cathignol ,  Bernard Lacruche

IPC: A61B17/22 ,  B06B1/00 ,  G10K15/06 ,  H01T21/06

CPC classification number: H01T21/06 ,  G10K15/06

Abstract: The invention relates to a method and to apparatus for detecting and correcting the positions of electrodes. The device comprises means for advancing the electrodes to cause them to advance and retract, preferably in an individual and independent manner, together with detector means (10) capable of being disposed at and of being retracted from the focus (F) at which an electric arc or discharge is to be provided between the electrodes (2, 4) and said detector means being suitable for detecting the presence of an electrode at said focus. Position correction then consists in successively bringing each electrode to the focus (F) into contact with said detector means which are advantageously constituted by a rod (12) of an actuator (14), prior to retracting each electrode through a predetermined distance d. The invention makes it possible to detect and correct the positions of electrodes at will, in an entirely simple manner capable of being automated.

Abstract translation: 本发明涉及一种用于检测和校正电极位置的方法和装置。 该装置包括用于使电极前进的装置，以使其能够优选以单独和独立的方式前进和缩回，以及能够设置在焦点（F）处和从聚焦（F）退出的检测器装置（10） 在电极（2,4）之间提供电弧或放电，并且所述检测器装置适于检测所述聚焦处的电极的存在。 然后位置校正包括在将每个电极缩回预定距离d之前，将每个电极连续地使焦点（F）与所述检测器装置接触，所述检测器装置有利地由致动器（14）的杆（12）构成。 本发明能够以能够自动化的完全简单的方式随意检测和校正电极的位置。

公开(公告)号：US2549165A

公开(公告)日：1951-04-17

申请号：US74592047

申请日：1947-05-05

Applicant: LAUNCELOT BRACKENBURY WILLIAM ,  BARNETT HENRY W

Inventor： LAUNCELOT BRACKENBURY WILLIAM ,  BARNETT HENRY W

IPC: H01T21/06

CPC classification number: H01T21/06 ,  Y10T29/53909

公开(公告)号：US1384209A

公开(公告)日：1921-07-12

申请号：US39378020

申请日：1920-07-03

Applicant: JOHN O'TOOLE

Inventor： JOHN O'TOOLE

IPC: H01T21/06

CPC classification number: H01T21/06 ,  B25B7/02 ,  B25B7/08

公开(公告)号：US10923885B2

公开(公告)日：2021-02-16

申请号：US15763003

申请日：2016-09-07

Applicant: EPCOS AG

Inventor： Franz Rinner

IPC: H01T4/12 ,  H01T4/16 ,  H01T21/00 ,  H01G4/005 ,  H01T21/06 ,  H02H9/04 ,  H02H9/06

Abstract: A surge protection component with a main body which has at least one inner electrode arranged between two ceramic layers, wherein the at least one inner electrode is set back from at least one lateral face of the main body, wherein a gas-filled cavity is provided between the at least one inner electrode and the at least one lateral face, and wherein an outer electrode is respectively arranged on two mutually opposite lateral faces of the main body. According to a further aspect, the present invention relates to a method for producing a surge protection component.

公开(公告)号：US20200244048A1

公开(公告)日：2020-07-30

申请号：US16742977

申请日：2020-01-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takashi SEKIZAWA ,  Tomokatsu KASHIMA ,  Yasushi SAKAKURA

IPC: H01T13/39 ,  H01T21/02 ,  H01T21/06

Abstract: A spark plug including a ground electrode including a base material, a tip having a discharge surface, and a melt portion interposed over an entire area between the tip and the base material and joining the tip to the base material; and a center electrode with a spark gap formed between the center electrode and the discharge surface. The tip has, in an inner area surrounded by an outer peripheral portion of the tip, a thin portion in which a distance between the discharge surface and the melt portion is shorter than a distance between the discharge surface and the melt portion in the outer peripheral portion. The thin portion extends from a part of the outer peripheral portion to a part other than the part of the outer peripheral portion.