Wheel bearing
US-2024060536-A1 · Feb 22, 2024 · US
Sealing device
US2025361911A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025361911-A1 |
| Application number | US-202318993217-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 13, 2023 |
| Priority date | Jul 11, 2022 |
| Publication date | Nov 27, 2025 |
| 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.
A sealing device includes a body, a first lip protruding from the body, a second lip protruding from the body and positioned apart from the first lip in a radially inward direction of the first lip, a first grease applied to a surface of the first lip, and a second grease applied to a surface of the second lip. Properties of the first grease differ from properties of the second grease.
First claim
Opening claim text (preview).
1 . A sealing device for sealing an annular gap between an inner member and an outer member of a hub bearing, the inner member being rotatable relative to the outer member, the sealing device comprising: a body; a first lip protruding from the body; a second lip protruding from the body and positioned apart from the first lip in a radially inward direction of the first lip; a first grease applied to a surface of the first lip; and a second grease applied to a surface of the second lip, wherein: the first lip and the second lip each extend from the body toward either the inner member or the outer member, and properties of the first grease differ from properties of the second grease. 2 . The sealing device according to claim 1 , wherein a consistency number of the second grease defined in JIS K 2220: 2013 differs from a consistency number of the first grease defined in JIS K 2220: 2013. 3 . The sealing device according to claim 2 , wherein the consistency number of the second grease in JIS K 2220: 2013 is less than the consistency number of the first grease defined in JIS K 2220: 2013. 4 . The sealing device according to claim 1 , wherein a shear viscosity of the second grease under sliding differs from a shear viscosity of the first grease under sliding. 5 . The sealing device according to claim 4 , wherein the shear viscosity of the second grease under sliding is less than the shear viscosity of the first grease under sliding. 6 . The sealing device according to claim 1 , wherein a content percentage of a thickener in the second grease differs from a content percentage of a thickener in the first grease. 7 . The sealing device according to claim 6 , wherein the content percentage of the thickener in the second grease is less than the content percentage of the thickener in the first grease. 8 . The sealing device according to claim 1 , wherein a water resistance of the first grease is greater than a water resistance of the second grease. 9 . The sealing device according to claim 1 , wherein a color density of the first grease is greater than a color density of the second grease.
Assignees
Inventors
Classifications
Wheel hubs or castors · CPC title
composite or split, e.g. half- axles; Couplings between axle parts or sections · CPC title
Dead axles, i.e. not transmitting torque · CPC title
having two or more lips · CPC title
Retaining the grease in or near the bearing · 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 US2025361911A1 cover?
- A sealing device includes a body, a first lip protruding from the body, a second lip protruding from the body and positioned apart from the first lip in a radially inward direction of the first lip, a first grease applied to a surface of the first lip, and a second grease applied to a surface of the second lip. Properties of the first grease differ from properties of the second grease.
- Who is the assignee on this patent?
- Nok Corp, Nok Klueber Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16C33/7823. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Nov 27 2025 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).