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41. 再颁专利

USRE14957E lotus 失效
公开(公告)号：USRE14957E
公开(公告)日：1920-10-12
申请号：US14957D
IPC分类号： H01T13/36
CPC分类号： H01T13/36

42. 发明公开

US20240356311A1 Spark Plug 审中-公开
公开(公告)号：US20240356311A1
公开(公告)日：2024-10-24
申请号：US18577845
申请日：2022-06-30
申请人： CATERPILLAR ENERGY SOLUTIONS GmbH
发明人： Friedrich SCHAEFER
IPC分类号： H01T13/16 , H01T13/36
CPC分类号： H01T13/16 , H01T13/36
摘要： The present invention pertains to a spark plug comprising a housing, an insulator for electrically insulating a center electrode provided at least partly on the inside of the insulator. The housing of the spark plug is configured such that in a mounted state, an annular gap is formed between the housing and the insulator. The annular gap is filled with a heat-conducting element.

43. 发明公开

US20230378723A1 THERMALLY OPTIMIZED PRECHAMBER SPARK PLUG 审中-公开
公开(公告)号：US20230378723A1
公开(公告)日：2023-11-23
申请号：US18248587
申请日：2021-12-01
申请人： Robert Bosch GmbH
发明人： Bernd Mueller , Matthias Blankmeister , Stephan Kaske , Thomas Steidten , Ugur Yilmaz
IPC分类号： H01T13/36 , H01T13/54
CPC分类号： H01T13/36 , H01T13/54
摘要： A prechamber spark plug, including center and ground electrodes, a housing having an external thread, a cap arranged on the housing and together with the housing defines a prechamber, and an insulator which electrically insulates the center electrode from the housing. The external thread has a thread length in the axial direction. The housing is fastened to the insulator at first and second fixing regions so that a first clamping force at the first fixing region acts from the housing on the insulator, and a second clamping force at the second fixing region acts from the housing on the insulator. The first and second clamping forces are directed in opposite directions to one another in the axial direction. A distance between the first and second fixing regions in the axial direction defines a clamping length. A ratio between the thread length and the clamping length is between 0.7 to 1.3.

44. 发明授权

US11742636B1 Spark plug for boosted engine 有权
公开(公告)号：US11742636B1
公开(公告)日：2023-08-29
申请号：US18047525
申请日：2022-10-18
申请人： Ford Global Technologies, LLC
发明人： Michael Czekala , Thomas G. Leone
IPC分类号： F02P9/00 , H01T13/36 , H01T13/38
CPC分类号： H01T13/36 , H01T13/38 , F02P9/002
摘要： System and methods for operating a vehicle that includes a boosted engine are described. In one example, a spark plug may be adjusted between two operating states to reduce a possibility of pre-ignition and spark plug fouling. A first operating state may be conducive to operating the engine at light loads. The first operating state may be conducive to operating the engine at higher loads.

45. 发明授权

US11456578B2 Spark plug 有权
公开(公告)号：US11456578B2
公开(公告)日：2022-09-27
申请号：US17418030
申请日：2020-10-01
申请人： NGK SPARK PLUG CO., LTD.
发明人： Koichiro Saito , Susumu Imai
IPC分类号： H01T13/32 , H01T13/36 , H01T13/02 , H01T13/54 , H01T13/39
摘要： A spark plug including a center electrode; a metallic member forming a tubular shape around an axis of the spark plug, holding the center electrode therein, and having a hole formed in a side wall thereof and extending in a radial direction; and a ground electrode supported in the hole and extending from the hole toward the axis. The ground electrode has a fixing portion formed of metal and fixed to the hole, and an ignition portion containing a noble metal, disposed on a side toward the axis in relation to the fixing portion, and having a discharge surface for forming a gap between the ignition portion and the center electrode. The absolute value of the difference in coefficient of thermal expansion between the metallic member and the fixing portion is smaller than the absolute value of the difference in coefficient of thermal expansion between the metallic member and the ignition portion.

46. 发明授权

US11075504B2 Corona ignition device with improved electrical performance 有权
公开(公告)号：US11075504B2
公开(公告)日：2021-07-27
申请号：US16661275
申请日：2019-10-23
申请人： TENNECO INC.
发明人： John Antony Burrows , John E. Miller , Kristapher I. Mixell , James D. Lykowski
IPC分类号： H01T13/50 , H01T19/00 , H01T21/02 , F02P3/01 , F02P23/04 , H01T21/00 , H01T13/36 , H01T19/02 , H01T19/04
摘要： A corona comprises a central electrode surrounded by an insulator, which is surrounded by a conductive component. The conductive component includes a shell and an intermediate part both formed of an electrically conductive material. The intermediate part is a layer of metal which brazes the insulator to the shell. An outer surface of the insulator presents a lower ledge, and the layer of metal can be applied to the insulator above the lower ledge prior to or after inserting the insulator into the shell. The conductive inner diameter is less than an insulator outer diameter directly below the lower ledge such the insulator thickness increases toward the electrode firing end. The insulator outer diameter is also typically less than the shell inner diameter so that the corona igniter can be forward-assembled.

47. 发明申请

US20210151958A1 SPARK PLUG INCLUDING A MULTI-STEP INSULATOR SEAT 有权
公开(公告)号：US20210151958A1
公开(公告)日：2021-05-20
申请号：US16622592
申请日：2018-04-11
申请人： Robert Bosch GmbH
发明人： Matthias Herzberg , Chris Schimmel
IPC分类号： H01T13/36
摘要： A spark plug is provided, including a housing, an insulator situated within a housing, the insulator having a longitudinal axis, an insulator foot, body, head, and seat. Inside the housing is a housing seat which is in contact with the insulator seat of the insulator. An inner seal is situated between the housing seat and the insulator seat, so that the inner seal, the housing seat, and the insulator seat form a sealing system. The insulator seat includes a step that has a first section and a second section having an angle γ to one another that is greater than 0° and the first section being parallel to the insulator longitudinal axis. The inner seal is in contact with this first section, so that a radial sealing surface is formed at the insulator.

48. 发明授权

US10978856B1 Spark plug 有权
公开(公告)号：US10978856B1
公开(公告)日：2021-04-13
申请号：US17067992
申请日：2020-10-12
申请人： NGK Spark Plug Co., Ltd.
发明人： Yusuke Tanahashi , Naoki Nishio
IPC分类号： H01T13/36
摘要： A spark plug including a cylindrical insulator having a step portion; a center electrode provided in an axial hole of the insulator; and a cylindrical metal shell having a ledge portion, the metal shell holding the insulator from an outer circumferential side in a state in which the step portion is engaged with the ledge portion via a packing, wherein a recess is formed on a part contacting with the packing, of one of the step portion and the ledge portion, and a projection which at least partially overlaps the recess in the axial-line direction is formed on a part contacting with the packing, of the other of the step portion and the ledge portion.

49. 发明申请

US20210104874A1 HIGH THREAD JAMB NUT WITH RETAINING CLIP 有权
公开(公告)号：US20210104874A1
公开(公告)日：2021-04-08
申请号：US17063081
申请日：2020-10-05
申请人： FRAM GROUP IP LLC
发明人： Matthew B Below , Timothy J Smith
IPC分类号： H01T13/08 , H01T13/36 , H01T13/12
摘要： A spark plug is provided that includes an improved jamb nut configuration, which provides improved torque transfer and prevents inadvertent separation of the jamb nut from the remaining components of the spark plug, particularly during removal from the engine head. The spark plug is configured for axial insertion into the plug hole, and may have a non-axisymmetric ground shield that fits into the plug hole, wherein the plug hole is also provided with a complementary non-axisymmetric shape. The spark plug includes a central insulator, which has an inner end surrounding a central electrode and supporting the ground shield, which is mounted on the insulator to support a ground strap adjacent the electrode for forming a spark therebetween. The insulator and ground shield are axially slidable into the plug hole, and the jamb nut is rotatable to fix the spark plug in position in a predefined orientation. The insulator includes a retaining clip outwardly of the jamb nut that permits rotation of the jamb nut relative to the insulator but prevents axial separation of the jamb nut during removal of the spark plug from the engine head. An improved tool is also provided which better distributes torque transfer to the jamb nut and includes a catch to facilitate pulling of the spark plug from the engine head.

50. 发明授权

US10931087B2 Ignition plug, control system, internal combustion engine, and internal combustion engine system 有权
公开(公告)号：US10931087B2
公开(公告)日：2021-02-23
申请号：US16321218
申请日：2017-03-14
申请人： NGK SPARK PLUG CO., LTD.
发明人： Tomoaki Kato
IPC分类号： H01T13/34 , F01P3/02 , F01P3/16 , F02P13/00 , H01T13/20 , H01T13/16 , H01T13/36 , H01T21/02
摘要： An ignition plug includes a tubular insulator, a metallic shell disposed around the outer circumference of the insulator, a center electrode disposed in an axial hole of the insulator, and a ground electrode connected to the forward end of the metallic shell and facing the center electrode. The metallic shell has a threaded portion to be engaged with an internal combustion engine. The relational expression Ss/(Sa+Sb)≥2.6 is satisfied, where Ss is the surface area of an outer circumferential surface of the metallic shell extending from the rear end of the threaded portion to the forward end of the threaded portion, Sa is the surface area of that portion of the metallic shell which is to be exposed to combustion gas of the internal combustion engine, and Sb is the surface area of that portion of the insulator which is to be exposed to the combustion gas.

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