公开(公告)号：US10132355B2

公开(公告)日：2018-11-20

申请号：US15247117

申请日：2016-08-25

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Iino ,  Yukihiro Nakayama ,  Misato Hanaoka ,  Hisaya Nakamura ,  Hiroki Yoda

IPC: C10M169/04 ,  C10M171/02 ,  F16C33/66 ,  F16C33/78 ,  F16C33/41

Abstract: A grease for a rolling bearing of an information recording and reproducing apparatus contains a base oil, a thickener, and at least one kind of an antioxidant selected from an amine-based antioxidant expressed by the General Formula (1), and a phenol-based antioxidant expressed by the General Formula (2). The base oil contains a refined mineral oil classified as Group III in a base oil category defined by the American Petroleum Institute, and the flash point of the refined mineral oil is 240° C. or higher.

公开(公告)号：US09732798B2

公开(公告)日：2017-08-15

申请号：US15002046

申请日：2016-01-20

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Iino ,  Yukihiro Nakayama ,  Misato Hanaoka ,  Hisaya Nakamura ,  Hiroki Yoda

IPC: C10M107/02 ,  C10M171/02 ,  C10M169/06 ,  F16C33/66 ,  C10M169/04

CPC classification number: F16C33/6633 ,  C10M169/04 ,  C10M2203/024 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2207/0225 ,  C10M2207/026 ,  C10M2207/0406 ,  C10M2207/126 ,  C10M2207/128 ,  C10M2207/2835 ,  C10M2207/289 ,  C10M2215/06 ,  C10M2215/064 ,  C10M2215/1026 ,  C10M2215/221 ,  C10M2215/223 ,  C10N2230/00 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/68 ,  C10N2240/02 ,  C10N2240/204 ,  C10N2250/10 ,  F16C19/54 ,  F16C33/416 ,  F16C33/6603 ,  F16C33/6607 ,  F16C33/785 ,  F16C2370/12 ,  C10N2220/022

Abstract: A grease composition includes a base oil, a thickener and at least one kind of an antioxidant selected from an amine-based antioxidant and a phenol-based antioxidant expressed by the following respective general formulas (1) and 2: The base oil contains a poly-α-olefin and a mineral oil. A mass ratio of poly-α-olefin/mineral oil is 1.25 to 9.

公开(公告)号：US10520029B2

公开(公告)日：2019-12-31

申请号：US15953070

申请日：2018-04-13

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Iino ,  Yukihiro Nakayama ,  Hironobu Itoh ,  Tatsumi Yamada ,  Noritoshi Yuura ,  Haruhiko Hasegawa

IPC: F16C33/62 ,  F16C19/06 ,  F16C19/52 ,  F16C13/00 ,  B29C33/40 ,  B29C45/14

Abstract: A structure includes an enveloping layer formed on one of a circular outer surface or a flat outer surface having irregularities, wherein the enveloping layer includes an outer circumferential surface layer formed by thermally fusing a thermoplastic elastomer. The enveloping layer has a first material layer provided on one of the outer surfaces and formed from an amorphos plastic, and a second material layer provided on the first material layer and formed from a thermoplastic elastomer selected from the group consisting of styrenes, olefins, polyvinyl chlorides, urethanes and polyesters.

公开(公告)号：US09994788B2

公开(公告)日：2018-06-12

申请号：US15002033

申请日：2016-01-20

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Iino ,  Yukihiro Nakayama ,  Misato Hanaoka ,  Hisaya Nakamura ,  Hiroki Yoda

IPC: C10M107/02 ,  C10M171/02 ,  C10M169/02 ,  F16C33/66 ,  F16C19/06 ,  F16C19/54

CPC classification number: C10M169/02 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2215/1026 ,  C10N2220/022 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2240/02 ,  C10N2250/10 ,  F16C19/06 ,  F16C19/54 ,  F16C33/6633 ,  F16C2210/04 ,  F16C2370/12

Abstract: Grease comprises a base oil and a thickener. The base oil contains mineral oil and poly-α-olefin, the proportion of the mineral oil is 10% by mass to 40% by mass in 100% by mass of the base oil, and a kinematic viscosity v1 of the mineral oil at 40° C. is higher than a kinematic viscosity v2 of the poly-α-olefin at 40° C. The base oil comprises a refined mineral oil that is classified as Group III in a base oil category defined by the American Petroleum Institute, and the flash point of the refined mineral oil is 240° C. or higher. A rolling bearing contains the grease, a rolling bearing device includes a shaft supported by the rolling bearing device, and an information recording and reproducing apparatus includes the rolling bearing device.

公开(公告)号：US20160208190A1

公开(公告)日：2016-07-21

申请号：US15002033

申请日：2016-01-20

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Ino ,  Yukihiro Nakayama ,  Misato Hanaoka ,  Hisaya Nakamura ,  Hiroki Yoda

IPC: C10M169/02 ,  F16C33/66 ,  C10M105/04 ,  C10M115/08 ,  C10M111/02 ,  C10M101/02

CPC classification number: C10M169/02 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2215/1026 ,  C10N2220/022 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2240/02 ,  C10N2250/10 ,  F16C19/06 ,  F16C19/54 ,  F16C33/6633 ,  F16C2210/04 ,  F16C2370/12

Abstract: Provided are grease containing a base oil and a thickener, a rolling bearing including the grease, a rolling device 6, and an information recording and reproducing apparatus 1. The base oil contains mineral oil and poly-α-olefin, a proportion of the mineral oil is 10% by mass to 40% by mass in 100% by mass of the base oil, and a kinematic viscosity ν1 of the mineral oil at 40° C. is higher than a kinematic viscosity ν2 of the poly-α-olefin at 40° C.

Abstract translation: 提供含有基础油和增稠剂的润滑脂，包括润滑脂的滚动轴承，滚动装置6和信息记录和再现装置1.基础油含有矿物油和聚-α-烯烃，矿物的一部分 在100质量％的基油中，油的质量比为10质量％〜40质量％，40℃下的矿物油的运动粘度＆ngr 1高于聚对苯二甲酸乙二醇酯的运动粘度＆ α-烯烃在40℃