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公开(公告)号：US10683935B2
公开(公告)日：2020-06-16
申请号：US15724310
申请日：2017-10-04
Applicant: NOK CORPORATION
Inventor： Satoshi Yamanaka , Norimasa Hosonuma , Maiko Kawamoto , Fangman Xu
IPC: F16J15/32 , F16J15/3204 , F16J15/16 , F16J15/3256 , F16J15/3264 , F16J15/34 , F16J15/3244
Abstract: A sealing device provides sealing so as to prevent a sealed fluid in a machine inner side from leaking to a machine outer side between a housing and a rotating shaft which is inserted to a shaft hole provided in the housing. The sealing device has a seal flange which is installed to an outer periphery of the rotating shaft, and a seal lip which is installed to an inner periphery of the shaft hole of the housing and slidably comes into contact with the seal flange over an entire periphery. The sealing device includes a thread groove which exerts a fluid pumping action when the rotating shaft rotates. The thread groove is provided at a position which does not intersect a contact area where the seal lip slidably comes into contact with the seal flange over the entire periphery, thereby suppressing generation of static leakage.
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公开(公告)号：US09388705B2
公开(公告)日：2016-07-12
申请号：US14384504
申请日：2013-03-11
Applicant: NOK CORPORATION
Inventor： Kazunari Seki , Koji Watanabe , Wataru Tokunaga , Yuki Takao , Fangman Xu , Hirotaka Mizuta , Keisuke Nakashima , Takuya Igawa , Yusuke Yoshida , Hideya Watanabe , Yosuke Kondo
CPC classification number: F01D11/003 , F16J9/20 , F16J15/164 , F16J15/18 , F16J15/181 , F16J15/3208 , F16J15/3244 , F16J15/442
Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
Abstract translation: 密封装置包括：外周环2000，其与低压侧（L）的环状槽4100的侧壁面接触，并且相对于壳体5000中的轴孔的内周面滑动 轴4000插入其中。 由与外周环2000的内周面接触的橡胶状弹性体和环状槽4100的槽底面分别形成的内周环3000。 外周环2000在其外周面形成有从高压侧（H）的端部延伸到未到达低压侧的端部的位置的凹部2220，以便引入 来自高压侧的流体。
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公开(公告)号：US10352450B2
公开(公告)日：2019-07-16
申请号：US15317718
申请日：2015-06-09
Applicant: NOK CORPORATION
Inventor： Satoshi Yamanaka , Norimasa Hosonuma , Maiko Kawamoto , Fangman Xu
IPC: F16J15/32 , F16J15/3204 , F16J15/3244 , F16J15/16 , F16J15/3256 , F16J15/3264 , F16J15/34
Abstract: The invention provides a sealing device sealing so as to prevent a sealed fluid in a machine inner side from leaking to a machine outer side between a housing and a rotating shaft which is inserted to a shaft hole provided in the housing. The sealing device has a seal flange which is installed to an outer periphery of the rotating shaft, and a seal lip which is installed to an inner periphery of the shaft hole of the housing and slidably comes into contact with the seal flange over an entire periphery. The sealing device includes a thread groove which exerts a fluid pumping action when the rotating shaft rotates. The thread groove is provided at a position which does not intersect a contact area where the seal lip slidably comes into contact with the seal flange over the entire periphery, thereby suppressing generation of static leakage.
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公开(公告)号：US20150204204A1
公开(公告)日：2015-07-23
申请号：US14384504
申请日：2013-03-11
Applicant: NOK CORPORATION
Inventor： Kazunari Seki , Koji Watanabe , Wataru Tokunaga , Yuki Takao , Fangman Xu , Hirotaka Mizuta , Keisuke Nakashima , Takuya Igawa , Yusuke Yoshida , Hideya Watanabe , Yosuke Kondo
CPC classification number: F01D11/003 , F16J9/20 , F16J15/164 , F16J15/18 , F16J15/181 , F16J15/3208 , F16J15/3244 , F16J15/442
Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
Abstract translation: 密封装置包括：外周环2000，其与低压侧（L）的环状槽4100的侧壁面接触，并且相对于壳体5000中的轴孔的内周面滑动 轴4000插入其中。 由与外周环2000的内周面接触的橡胶状弹性体和环状槽4100的槽底面分别形成的内周环3000。 外周环2000在其外周面形成有从高压侧（H）的端部延伸到未到达低压侧的端部的位置的凹部2220，以便引入 来自高压侧的流体。
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Patent Agency Ranking
公开(公告)号：US10190689B2
公开(公告)日：2019-01-29
申请号：US15557909
申请日：2016-03-10
Applicant: NOK CORPORATION
Inventor： Yusuke Yoshida , Fangman Xu , Nozomu Suzuki , Norimasa Hosonuma , Shigenobu Honda , Kenichi Yoshimura , Yohei Sakai , Shota Toma
IPC: F16J15/34 , F16J15/16 , F16J15/18 , F16J15/3244 , F16J15/44
Abstract: A seal ring capable of stably reducing a rotational torque while preventing the leakage of sealed fluid. The seal ring includes: an abutment joint part (110) provided at one portion in a circumferential direction thereof; a plurality of dynamic pressure generation grooves (120) provided at intervals in the circumferential direction on a side of a sliding surface thereof sliding on a lateral wall surface of an annular groove; and foreign matter discharging grooves (130) that are provided between a region in which the plurality of dynamic pressure generation grooves (120) is arranged and the abutment joint part (110) in the circumferential direction on the side of the sliding surface sliding on the lateral wall surface, and that are capable of catching foreign matter intruding from the abutment joint part (110) and discharging the caught foreign matter to an outside of a sliding part between the seal ring and the lateral wall surface.
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公开(公告)号：US20150048574A1
公开(公告)日：2015-02-19
申请号：US14384501
申请日：2013-03-11
Applicant: NOK CORPORATION
Inventor： Kazunari Seki , Koji Watanabe , Wataru Tokunaga , Yuki Takao , Fangman Xu , Hirotaka Mizuta , Keisuke Nakashima , Takuya Igawa , Yusuke Yoshida , Hideya Watanabe , Yosuke Kondo
IPC: F16J15/18
CPC classification number: F01D11/003 , F16J9/20 , F16J15/164 , F16J15/18 , F16J15/181 , F16J15/3208 , F16J15/3244 , F16J15/442
Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
Abstract translation: 密封装置包括：外周环2000，其与低压侧（L）的环状槽4100的侧壁面接触，并且相对于壳体5000中的轴孔的内周面滑动 轴4000插入其中。 由与外周环2000的内周面接触的橡胶状弹性体和环状槽4100的槽底面分别形成的内周环3000。 外周环2000在其外周面形成有从高压侧（H）的端部延伸到未到达低压侧的端部的位置的凹部2220，以便引入 来自高压侧的流体。
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公开(公告)号：US09309973B2
公开(公告)日：2016-04-12
申请号：US14384483
申请日：2013-03-11
Applicant: NOK CORPORATION
Inventor： Kazunari Seki , Koji Watanabe , Wataru Tokunaga , Yuki Takao , Fangman Xu , Hirotaka Mizuta , Keisuke Nakashima , Takuya Igawa , Yusuke Yoshida , Hideya Watanabe , Yosuke Kondo
CPC classification number: F01D11/003 , F16J9/20 , F16J15/164 , F16J15/18 , F16J15/181 , F16J15/3208 , F16J15/3244 , F16J15/442
Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
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公开(公告)号：US09157530B2
公开(公告)日：2015-10-13
申请号：US14384501
申请日：2013-03-11
Applicant: NOK CORPORATION
Inventor： Kazunari Seki , Koji Watanabe , Wataru Tokunaga , Yuki Takao , Fangman Xu , Hirotaka Mizuta , Keisuke Nakashima , Takuya Igawa , Yusuke Yoshida , Hideya Watanabe , Yosuke Kondo
CPC classification number: F01D11/003 , F16J9/20 , F16J15/164 , F16J15/18 , F16J15/181 , F16J15/3208 , F16J15/3244 , F16J15/442
Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
Abstract translation: 密封装置包括：外周环2000，其与低压侧（L）的环状槽4100的侧壁面接触，并且相对于壳体5000的轴孔的内周面滑动 轴4000插入其中。 由与外周环2000的内周面接触的橡胶状弹性体和环状槽4100的槽底面分别形成的内周环3000。 外周环2000在其外周面形成有从高压侧（H）的端部延伸到未到达低压侧的端部的位置的凹部2220，以便引入 来自高压侧的流体。
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公开(公告)号：US20150108720A1
公开(公告)日：2015-04-23
申请号：US14384483
申请日：2013-03-11
Applicant: NOK CORPORATION
Inventor： Kazunari Seki , Koji Watanabe , Wataru Tokunaga , Yuki Takao , Fangman Xu , Hirotaka Mizuta , Keisuke Nakashima , Takuya Igawa , Yusuke Yoshida , Hideya Watanabe , Yosuke Kondo
CPC classification number: F01D11/003 , F16J9/20 , F16J15/164 , F16J15/18 , F16J15/181 , F16J15/3208 , F16J15/3244 , F16J15/442
Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
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