公开(公告)号：US20240417646A1

公开(公告)日：2024-12-19

申请号：US18703029

申请日：2022-10-13

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M169/04 ,  C10M105/34 ,  C10M129/74 ,  C10M137/10 ,  C10M141/10 ,  C10N30/02 ,  C10N40/08

Abstract: Provided are a shock absorber-lubricating oil composition, a lubricating oil additive, and a method for adjusting the friction characteristics of the shock absorber-lubricating oil composition, capable of making both operation stability and ride comfort compatible with each other. A shock absorber-lubricating oil composition contains a base oil and a friction modifier. The friction modifier contains a pentaerythritol ester. The base oil contains an ester oil as a main component.

公开(公告)号：US11932823B2

公开(公告)日：2024-03-19

申请号：US17601828

申请日：2020-04-10

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M137/10 ,  C07F9/165 ,  C10M169/04 ,  F16F9/32 ,  C10N40/08

CPC classification number: C10M137/10 ,  C07F9/1658 ,  C10M169/04 ,  F16F9/3278 ,  B60G2202/24 ,  B60G2206/70 ,  C10M2203/003 ,  C10M2223/045 ,  C10N2040/08 ,  F16F2222/12 ,  F16F2224/04 ,  F16F2230/04

Abstract: To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1:




[in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].

公开(公告)号：US12085139B2

公开(公告)日：2024-09-10

申请号：US17766508

申请日：2020-07-03

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: F16F9/32 ,  C10M125/24 ,  C10M129/74

CPC classification number: F16F9/3278 ,  C10M125/24 ,  C10M129/74 ,  C10M2201/085 ,  C10M2207/282 ,  F16F2230/04

Abstract: To provide a lubricant composition for shock absorbers, a shock absorber, and a method for adjusting the friction of a lubricant composition for shock absorbers, each capable of satisfying both operational stability and ride comfort particularly at the time of a minute amplitude. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent, wherein the friction adjusting agent contains a pentaerythritol ester, the pentaerythritol ester contains a pentaerythritol tetraester at the highest proportion or in an amount of 50 mass % or more, and the pentaerythritol ester content is 0.5 mass % or more.

公开(公告)号：US12054687B2

公开(公告)日：2024-08-06

申请号：US17919810

申请日：2021-03-16

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M129/74 ,  B60G13/08 ,  C10M129/76 ,  C10M169/04 ,  F16F9/32 ,  C10N40/08

CPC classification number: C10M129/74 ,  B60G13/08 ,  C10M129/76 ,  C10M169/04 ,  F16F9/3278 ,  B60G2202/24 ,  B60G2800/162 ,  C10M2203/003 ,  C10M2207/283 ,  C10M2207/289 ,  C10N2040/08 ,  F16F2222/04 ,  F16F2230/04

Abstract: Provided are a lubricant composition for shock absorbers, a lubricant additive, and a method of adjusting friction characteristics of a lubricant composition for shock absorbers, each capable of satisfying both the operational stability and ride comfort. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent, the friction adjusting agent contains pentaerythritol esters, and the pentaerythritol esters contain a pentaerythritol tetraester and a pentaerythritol ester other than the pentaerythritol tetraester.

公开(公告)号：US20220204882A1

公开(公告)日：2022-06-30

申请号：US17601828

申请日：2020-04-10

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M137/10 ,  C10M169/04 ,  C07F9/165 ,  F16F9/32

Abstract: To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1: [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].

公开(公告)号：US20180017160A1

公开(公告)日：2018-01-18

申请号：US15546718

申请日：2016-02-03

Applicant: KYB Corporation

Inventor： Shinji Kato ,  Takashi Kobayashi ,  Yoshinori Sugiura ,  Kenji Sakuragi

IPC: F16J9/26 ,  C08J5/04 ,  F15B15/14 ,  F16J9/28

CPC classification number: F16J9/26 ,  C08J5/04 ,  C08J5/042 ,  F15B15/1428 ,  F15B15/1452 ,  F16J9/28 ,  F16J15/166 ,  F16J15/3284

Abstract: Problem: Provided is a sealing device which has reduced wear of a metallic member in sliding portions having electric-resistance welded carbon steel and a fiber reinforced resin member. Means for resolution: A sealing device having a mechanism in which a metallic member and a resin member relatively slide, wherein the metallic member is formed from electric-resistance welded carbon steel, and the resin member is formed from a carbon-fiber reinforced synthetic resin.

公开(公告)号：US12152215B2

公开(公告)日：2024-11-26

申请号：US18010601

申请日：2021-06-15

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M129/74 ,  C10M129/76 ,  C10M169/04 ,  C10N40/08

Abstract: Provided are a lubricant composition for shock absorbers, a lubricant additive, and a method of adjusting frictional property of a lubricant composition for shock absorbers, each capable of satisfying both the steering stability and ride comfort. The lubricant composition for shock absorbers contains a base oil and pentaerythritol esters and having frictional property represented by the following formula (1): RI>1.75×Fave−0.05  (1) supposing that a ratio ({Fsa−Fave}/Fave) of a difference, at the time of minute amplitude, between a peak frictional force Fsa in transition from a stationary state to a sliding state and an average frictional force Fave to the average frictional force Fave at the time of minute amplitude is responsiveness RI.

公开(公告)号：US20210380897A1

公开(公告)日：2021-12-09

申请号：US17285175

申请日：2019-12-24

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M137/10 ,  C10M169/04 ,  C10M129/08

Abstract: To provide a lubricating oil composition for a shock absorber, an additive for friction adjustment, a lubricating oil additive, a shock absorber, and a method for adjusting friction of a shock absorber lubricating oil, capable of achieving both operation stability and riding comfort. A lubricating oil composition for a shock absorber contains a base oil and a friction adjusting agent, in which the friction adjusting agent contains zinc dithiophosphate and pentaerythritol.

公开(公告)号：US11993757B2

公开(公告)日：2024-05-28

申请号：US17285175

申请日：2019-12-24

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M141/10 ,  C10M169/04 ,  C10N10/04 ,  C10N30/06 ,  C10N40/08

CPC classification number: C10M141/10 ,  C10M169/04 ,  C10M2207/022 ,  C10M2207/283 ,  C10M2223/045 ,  C10N2010/04 ,  C10N2030/06 ,  C10N2040/08 ,  C10M2223/045 ,  C10N2010/04

Abstract: To provide a lubricating oil composition for a shock absorber, an additive for friction adjustment, a lubricating oil additive, a shock absorber, and a method for adjusting friction of a shock absorber lubricating oil, capable of achieving both operation stability and riding comfort. A lubricating oil composition for a shock absorber contains a base oil and a friction adjusting agent, in which the friction adjusting agent contains zinc dithiophosphate and pentaerythritol.

公开(公告)号：US20240084869A1

公开(公告)日：2024-03-14

申请号：US17766508

申请日：2020-07-03

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: F16F9/32 ,  C10M125/24 ,  C10M129/74

CPC classification number: F16F9/3278 ,  C10M125/24 ,  C10M129/74 ,  C10M2201/085 ,  C10M2207/282 ,  F16F2230/04

Abstract: To provide a lubricant composition for shock absorbers, a shock absorber, and a method for adjusting the friction of a lubricant composition for shock absorbers, each capable of satisfying both operational stability and ride comfort particularly at the time of a minute amplitude. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent, wherein the friction adjusting agent contains a pentaerythritol ester, the pentaerythritol ester contains a pentaerythritol tetraester at the highest proportion or in an amount of 50 mass % or more, and the pentaerythritol ester content is 0.5 mass % or more.