Sealing apparatus
    61.
    发明授权

    公开(公告)号:US11215284B2

    公开(公告)日:2022-01-04

    申请号:US16697820

    申请日:2019-11-27

    申请人: NOK CORPORATION

    IPC分类号: F16J15/3244 F16J15/3204

    摘要: A sealing apparatus 1 includes a sealing apparatus body 2 and a slinger 3. The sealing apparatus body 2 includes an annular reinforcing ring 10 and an annular elastic body portion 20. The slinger 3 includes a flange portion 31 which is an annular portion extending toward an outer periphery side. The elastic body portion 20 includes an annular end-face lip 21 extending toward an inner side and contacting an outer side surface 31d of the flange portion 31. At least one shallow groove 33 is formed on the outer side surface 31d of the flange portion 31 of the slinger 3.

    SEALING DEVICE AND SEALING STRUCTURE

    公开(公告)号:US20210404556A1

    公开(公告)日:2021-12-30

    申请号:US17289847

    申请日:2019-12-18

    申请人: NOK CORPORATION

    发明人: Naoki HAGIWARA

    IPC分类号: F16J15/12 F16J15/10

    摘要: A sealing device includes a reinforcing ring and an elastic body part formed from an elastic body and attached to the reinforcing ring. The elastic body part includes a seal lip projecting toward one side in a direction of an axis, a secondary lip portion projecting toward another side in the direction of the axis, and an outer peripheral portion covering the reinforcing ring from an outer periphery side. The seal lip projects beyond the reinforcing ring toward the one side, and the secondary lip portion projects beyond the reinforcing ring toward the other side. In the outer peripheral portion, at least one identification part acting as a mark is formed further on the one side or the other side than a middle of the outer peripheral portion.

    Electroconductive roll
    63.
    发明授权

    公开(公告)号:US11194263B2

    公开(公告)日:2021-12-07

    申请号:US17261952

    申请日:2019-08-29

    申请人: NOK CORPORATION

    IPC分类号: G03G15/02 F16C13/00

    摘要: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The density of peaks Spd of the surface of the surface layer is equal to or greater than 93,406 (1/mm2), and is equal to or less than 153,027 (1/mm2).

    Sealing device
    64.
    发明授权

    公开(公告)号:US11193589B2

    公开(公告)日:2021-12-07

    申请号:US16488209

    申请日:2018-03-26

    申请人: NOK CORPORATION

    发明人: Tatsuya Mori

    摘要: [Problem] To provide a sealing device having high pressure-resistance and durability for a reciprocating shaft.
    [Solution] A sealing device comprising an oil seal member and a dust seal member. The oil seal member and the dust seal member each comprise a rigid ring provided inside a shaft hole and an elastic ring attached to the rigid ring, wherein the elastic ring has formed thereon a lip for slidably contacting a reciprocating shaft. The sealing device further comprises an intermediate rigid ring provided between the elastic ring of the oil seal member and the elastic ring of the dust seal member, in a direction parallel to the axial direction of the reciprocating shaft.

    Sealing device
    65.
    发明授权

    公开(公告)号:US11187325B2

    公开(公告)日:2021-11-30

    申请号:US16061978

    申请日:2016-10-31

    申请人: NOK CORPORATION

    摘要: A sealing device in which diameter expansion of an inserted first back-up ring is suppressed. The sealing device includes a seal ring mounted in a rectangular mounting groove, the first back-up ring, and a second back-up ring. The first back-up ring has an end surface contacting an opposing-sealing-fluid-side side surface of the mounting groove. The second back-up ring has an end surface contacting the seal ring. A contact surface in an inner peripheral end of second back-up ring is perpendicular to the axis to contact an opposing-sealing-fluid-side side surface of the mounting groove. The inner diameter of the first back-up ring is set to be larger than the outer diameter of the contact surface portion of the second back-up ring, and the outer diameter of the first back-up ring is set to be smaller than the inner diameter of a housing.

    SEALING DEVICE
    66.
    发明申请

    公开(公告)号:US20210363945A1

    公开(公告)日:2021-11-25

    申请号:US17257085

    申请日:2019-08-05

    申请人: NOK CORPORATION

    发明人: Nobuyuki EGUCHI

    摘要: A sealing device includes a metal ring 110 with a cylindrical section 111 and an inward flange section 112 disposed at one end of the cylindrical section 111. A resin seal 120 has an outer circumference side fixed to the metal ring 110 and an inner circumference side configured to slidably and closely come into contact with an outer circumference surface of the rotary shaft in a state deformed to curve toward a sealing target region. A flat spring 130 includes a plate-shaped annular metal member and has an outer circumference side fixed to the metal ring 110 and an inner circumference side configured to deform to curve along the resin seal 120 and press the inner circumference side of the resin seal 120 radially inward. A metal slide bearing 140, is sandwiched between the resin seal 120 and the inward flange section 112 and configured to slide on the outer circumference surface of the rotary shaft.

    SEAL RING
    67.
    发明申请

    公开(公告)号:US20210356044A1

    公开(公告)日:2021-11-18

    申请号:US16965162

    申请日:2019-08-09

    申请人: NOK CORPORATION

    发明人: Yusuke YOSHIDA

    摘要: A seal ring has, on an outer peripheral surface side thereof, a pair of recessed parts 140 extending in a circumferential direction on both sides in a width direction thereof to form a projection part 120 between the pair of recessed parts 140, and has a plurality of ribs 130 connected to the projection part 120 and extending to lateral surfaces of the seal ring at intervals in the circumferential direction inside the pair of recessed parts 140, and a plurality of ribs 130 arranged on a sealed region side among the plurality of ribs 130 have lateral-wall surfaces on an upstream side in a relative rotation direction of a housing with respect to a shaft, each of the lateral-wall surfaces having inclined surfaces inclined from the upstream side to a downstream side in the relative rotation direction of the housing from the projection part 120 toward the lateral surfaces of the seal ring.

    COUPLING DEVICE AND SEALING DEVICE
    69.
    发明申请

    公开(公告)号:US20210324891A1

    公开(公告)日:2021-10-21

    申请号:US17252909

    申请日:2019-08-09

    申请人: NOK CORPORATION

    发明人: Atsushi SUZUKI

    摘要: A coupling device attaches a sealing device to a panel. The sealing device seals a gap between the panel and a rotational shaft located in a shaft hole provided in the panel. The coupling device includes: a supporting wall part formed with a through hole into which the sealing device is to be inserted; multiple sealing-device hooks located on a first surface side of the supporting wall part and located around the through hole, the sealing-device hooks for being hooked on the sealing device from the outside; and multiple panel hooks located on a second surface side of the supporting wall part and located around the through hole, the panel hooks for being inserted into the shaft hole of the panel and to be hooked on a periphery of the shaft hole of the panel from the inside.