Spark plug
    5.
    发明授权

    公开(公告)号:US11862943B2

    公开(公告)日:2024-01-02

    申请号:US17912086

    申请日:2020-09-10

    IPC分类号: H01T13/34

    CPC分类号: H01T13/34

    摘要: Spark plug has center electrode having leg portion extending in an axis direction, brim portion located at rear end side with respect to the leg portion and protruding outwards in a radial direction with respect to the leg portion and connecting portion connecting the leg portion and the brim portion; insulator having penetration hole and supporting the center electrode; and seal member filling the penetration hole and fixing the brim portion and the insulator. The center electrode satisfies “(D1-D2)/D1≤0.06”, where a maximum value of a radius of the brim portion is D1, and a minimum value of the radius of the brim portion is D2, also satisfies “L2/L1≤0.30”, where a size of the center electrode along the axis direction is L1, and a size along the axis direction from boundary between the connecting portion and the leg portion to a center of gravity of the center electrode is L2.

    GAS SENSOR ELEMENT AND GAS SENSOR
    8.
    发明公开

    公开(公告)号:US20230204535A1

    公开(公告)日:2023-06-29

    申请号:US18085067

    申请日:2022-12-20

    IPC分类号: G01N27/41 G01N27/407

    摘要: A gas sensor element (10) which includes an element body portion (100); a pump cell (110) which is configured to adjust a concentration of oxygen in a gas to be measured which is introduced into the element body portion (100); a detection chamber (160) which is formed inside the element body portion (100) and into which the gas to be measured in which the concentration of oxygen has been adjusted is introduced; and a layer-shaped cathode electrode (133) which is housed in the detection chamber (160) and configured to decompose NO. A relationship between a volume V1 of the detection chamber (160) and a volume V2 of the cathode electrode (133) in the gas sensor element (10) satisfies either one of conditions (A) and (B) as defined herein.

    SPARK PLUG
    9.
    发明公开
    SPARK PLUG 审中-公开

    公开(公告)号:US20230178968A1

    公开(公告)日:2023-06-08

    申请号:US17998995

    申请日:2021-09-14

    IPC分类号: H01T13/41 H01T13/34

    CPC分类号: H01T13/41 H01T13/34

    摘要: A spark plug includes a tubular metallic shell, a tubular insulator held in the metallic shell and having an axial hole, a center electrode held at one end of the axial hole, a metallic terminal member held at the other end of the axial hole, and a resistor element disposed between the center electrode and the metallic terminal member in the axial hole and containing glass and an electrically conductive material. The resistor element has a first resistor layer disposed on the center electrode side and closest to the center electrode and containing titanium oxide, and a second resistor layer disposed on the metallic terminal member side in relation to the first resistor layer and whose titanium oxide content is lower than that of the first resistor layer. The titanium oxide content decreases from the center electrode side toward the metallic terminal member side.

    Waveguide slot antenna
    10.
    发明授权

    公开(公告)号:US11631940B2

    公开(公告)日:2023-04-18

    申请号:US17055001

    申请日:2019-11-01

    IPC分类号: H01Q13/10 H01Q13/22 H01Q21/00

    摘要: A waveguide slot antenna is configured by a waveguide, formed by a dielectric substrate, a first conductive layer formed at a lower surface of the dielectric substrate, a second conductive layer formed at an upper surface of the dielectric substrate and provided with one or a plurality of slots, and a pair of side wall parts electrically connecting the first and second conductive layers and extending in a first direction, being provided with a power feeding part. The one or a plurality of slots include a first slot having a predetermined slot length along the first direction. The waveguide slot antenna has a structure in which, on a plan view from a second direction, the power feeding part overlaps the first slot, and the power feeding part does not deviate from a range of the slot length along the first direction.