Rolling bearing, pivot assembly bearing, and disk drive apparatus
US-2024417645-A1 · Dec 19, 2024 · US
Rolling device
US2016201726A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016201726-A1 |
| Application number | US-201314649333-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 3, 2013 |
| Priority date | Dec 4, 2012 |
| Publication date | Jul 14, 2016 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
In the rolling device of the present invention, a grease composition is enclosed which contains a base oil having a kinematic viscosity of 15 to 80 mm 2 /s at 40° C. and, as a thickener, a mixture of lithium 12-hydroxystearate and a lithium fatty acid having a carbon number of 6 to 12, and has a dropping point of 190 to 240° C. and a yield stress of 1.2 to 5 kPa. Accordingly, the torque is reduced and the acoustic life is improved.
First claim
Opening claim text (preview).
1 . A rolling device comprising: an inner ring having an inner ring raceway on an outer peripheral surface thereof; an outer ring having an outer ring raceway on an inner peripheral surface thereof; a plurality of rolling elements rotatably provided between the inner ring raceway and the outer ring raceway; and a cage, wherein a grease composition is enclosed in the rolling device, wherein: the grease composition contains: a base oil having a kinematic viscosity of 15 to 80 mm 2 /s at 40° C.; and, as a thickener, a mixture of lithium 12-hydroxystearate and a lithium fatty acid having a carbon number of 6 to 12, and the grease composition has a dropping point of 190 to 240° C. and a yield stress of 1.2 to 5 kPa. 2 . The rolling device according to claim 1 , wherein relative to an outer diameter of the rolling elements, a radius of curvature of a groove of the inner ring raceway is from 51 to 56% and a radius of curvature of a groove of the outer ring raceway is from 55 to 63%. 3 . The rolling device according to claim 1 , wherein the base oil is an ester oil. 4 . The rolling device according to claim 2 , wherein the base oil is an ester oil.
Assignees
Inventors
Classifications
Reduction of noise, shudder, or vibrations · CPC title
Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof · CPC title
used as thickening agent · CPC title
Bearings · CPC title
used as thickening agents · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016201726A1 cover?
- In the rolling device of the present invention, a grease composition is enclosed which contains a base oil having a kinematic viscosity of 15 to 80 mm 2 /s at 40° C. and, as a thickener, a mixture of lithium 12-hydroxystearate and a lithium fatty acid having a carbon number of 6 to 12, and has a dropping point of 190 to 240° C. and a yield stress of 1.2 to 5 kPa. Accordingly, the torque is redu…
- Who is the assignee on this patent?
- Nsk Ltd, Kyodo Yushi
- What technology area does this patent fall under?
- Primary CPC classification F16C33/6633. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jul 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).