公开(公告)号：US20240401698A1

公开(公告)日：2024-12-05

申请号：US18580353

申请日：2022-07-19

Applicant: NOK CORPORATION

Inventor： Chiyota OGATA ,  Shinji USHIJIMA ,  Yohei MIKI ,  Tadahisa YAMABE

IPC: F16J15/10

Abstract: A gasket includes protrusion portions that respectively protrude to contact side surfaces facing each other of the groove to which the gasket is to be attached, an upper side seal lip portion that is formed to contact one of surfaces facing each other between members, a lower side seal lip portion that is formed to contact another one of the surfaces facing each other between the members, and a joining portion that joins the upper side seal lip portion and the lower side seal lip portion, wherein the joining portion extends along a virtual straight line in a section of the gasket, the upper side seal lip portion has upper side seal lips extending side by side between the protrusion portions in the joining portion, the lower side seal lip portion has lower side seal lips extending side by side between the protrusion portions in the joining portion, each of the upper side seal lips is tapered, and each of the lower side seal lips is tapered.

公开(公告)号：US20230313887A1

公开(公告)日：2023-10-05

申请号：US17925116

申请日：2021-05-10

Applicant: NOK CORPORATION

Inventor： Chiyota OGATA ,  Shinji USHIJIMA ,  Yohei MIKI

IPC: F16J15/10

CPC classification number: F16J15/106

Abstract: A sealing property is improved.
A sealing device (1) is formed of an endless elastic body around an axis line (x). The sealing device (1) is mounted in an endless space (S) formed by a plurality of members (100, 101) facing each other so as to perform sealing between one side (c) and the other side (d) in the radial direction of the space (S). The sealing device (1) includes a main body portion (11) facing the plurality of members (100, 101) in the axis line (x) direction, projecting portions (13) on one side projecting from the main body portion (11) toward the one side (c) in the radial direction to face the plurality of members (100, 101), and projecting portions (14) on the other side projecting from the main body portion (11) toward the other side (d) in the radial direction to face the plurality of members (100, 101). A projecting amount of each projecting portion (14) on the other side toward the other side (d) in the radial direction is greater than a projecting amount of each projecting portion (13) on one side toward the one side (c) in the radial direction.

公开(公告)号：US20170306904A1

公开(公告)日：2017-10-26

申请号：US15516904

申请日：2015-10-02

Applicant: NOK CORPORATION

Inventor： Masahiko INOUE ,  Takuya SUGITANI ,  Yohei MIKI

IPC: F02M35/12

CPC classification number: F02M35/1211 ,  F02M35/10 ,  F02M35/12

Abstract: The intake noise reduction device is capable of suppressing hindrance to the airflow caused by deformation of a flow-regulating net portion and suppressing a reduction in the airflow amount. A linear portion having a mesh shape constituting a flow-regulating net portion 120 includes a circumferential linear portion 122 that extends circumferentially and, an radial width t1 in the upstream side, with respect to the airflow direction, of the circumferential linear portion 122 is larger than a radial width t2 in the downstream side thereof, and a radially outer surface 122A is constituted by a tapered surface that tapers toward the downstream side.

公开(公告)号：US20250122936A1

公开(公告)日：2025-04-17

申请号：US18695657

申请日：2022-08-30

Applicant: NOK CORPORATION

Inventor： Chiyota OGATA ,  Tasuku ONO ,  Shinji USHIJIMA ,  Yohei MIKI ,  Kodai MATSUMOTO

IPC: F16J15/06

Abstract: A gasket (1) includes a body portion (10) in an annular shape having a basal surface (11) to contact a bottom surface (113) of a groove(110) and a top surface (12) to contact a second member (200) and extending over an entire circumferential direction of the gasket (1), a first protrusion pair (20) protruding from the body portion (10) respectively toward both side surfaces (111, 112) of the groove (110) and extending over the entire circumferential direction; and a second protrusion pair (30) protruding from the first protrusion pair (20) respectively toward both the side surfaces (111, 112). Respective second protrusions (31, 32) of the second protrusion pair (30) are disposed at a same position in the circumferential direction, and tip ends (31f, 32f) of the respective second protrusions (31, 32) are formed in a planar shape to be along the side surfaces of the groove (110). A first gasket width (W1) of the gasket (1) is smaller than a groove width (W0), and a second gasket width (W2) is larger than the groove width (W0).

公开(公告)号：US20210340979A1

公开(公告)日：2021-11-04

申请号：US17241730

申请日：2021-04-27

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI ,  NOK CORPORATION

Inventor： Fumiya SHINODA ,  Daisuke MASAKI ,  Takayuki HIRANO ,  Shintaro KASHIWA ,  Naoki TAKANI ,  Yohei MIKI

IPC: F04C2/12 ,  F04C15/00

Abstract: A housing unit of a Roots pump includes a rotor housing, which includes a peripheral wall, and a cover member, which closes an opening of the rotor housing. At least one of a mating surface of the peripheral wall or a mating surface of the cover member includes an annular first groove accommodating a seal member. The rotor housing includes a bulging portion including a second groove. The seal member incudes first projections, which project from an annular seal body, and a second projection, which projects further radially inward from the seal body than the first projections. Each first projection includes a distal end that contacts a side surface on a radially inner side or on a radially outer side of the first groove. The second projection is arranged in the second groove to determine the position of the seal body in the first groove.

公开(公告)号：US20170356407A1

公开(公告)日：2017-12-14

申请号：US15524622

申请日：2015-11-02

Applicant: NOK CORPORATION

Inventor： Yohei MIKI

IPC: F02M35/12 ,  F02M35/10

CPC classification number: F02M35/1222 ,  F02M35/10 ,  F02M35/10262 ,  F02M35/10295 ,  F02M35/10301 ,  F02M35/1211

Abstract: An intake noise reduction device that can mitigate deformation of a flow-regulating net portion made of an elastic body. The intake noise reduction device 100 is made of an elastic body that is disposed downstream of a throttle valve and includes an annular gasket portion 110 and a flow-regulating net portion 120 provided inside the gasket portion 110 integrally with the gasket portion 110, constituted by a linear portion having a mesh shape. The linear portion having the mesh shape constituting the flow-regulating net portion 120 includes first linear parts 121 that extend radially and second linear parts 122 that extend circumferentially. One of any given two parts of the first linear part 121 on a radially outer side has a width larger than or equal to that of the other part on a radially inner side, and a radially outermost part of the first linear part has a larger width than a radially innermost part.