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：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).