Sintered friction material for brake
US-2020263750-A1 · Aug 20, 2020 · US
Friction material and brake pad
US11698118B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11698118-B2 |
| Application number | US-202017118099-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 10, 2020 |
| Priority date | Jan 27, 2020 |
| Publication date | Jul 11, 2023 |
| Grant date | Jul 11, 2023 |
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.
The present invention provides a friction material and a brake pad having excellent wear resistance while exhibiting a high friction coefficient under high-temperature and high-speed conditions. A friction material containing: 40 mass % or more and 80 mass % or less of a matrix containing at least one kind selected from the group consisting of Ni and Fe; 10 mass % or more and 30 mass % or less of inorganic particles containing zircon particles, titania particles, and mullite particles; and 10 mass % or more and 30 mass % or less of a lubricant containing at least one kind selected from the group consisting of graphite, molybdenum disulfide, boron nitride and calcium fluoride, wherein a content of the zircon particles is 30 vol % or more and 36 vol % or less, a content of the titania particles is 30 vol % or more and 36 vol % or less, and a content of the mullite particles is 30 vol % or more and 36 vol % or less with respect to a total content of 100 vol % of the zircon particles, the titania particles, and the mullite particles.
First claim
Opening claim text (preview).
The invention claimed is: 1. A friction material comprising: 40 mass % or more and 80 mass % or less of a matrix containing at least one kind selected from the group consisting of Ni and Fe; 10 mass % or more and 30 mass % or less of inorganic particles containing zircon particles, titania particles, and mullite particles; and 10 mass % or more and 30 mass % or less of a lubricant containing at least one kind selected from the group consisting of graphite, molybdenum disulfide, boron nitride, and calcium fluoride, wherein a content of the zircon particles is 30 vol % or more and 36 vol % or less, a content of the titania particles is 30 vol % or more and 36 vol % or less, and a content of the mullite particles is 30 vol % or more and 36 vol % or less with respect to a total content of 100 vol % of the zircon particles, the titania particles, and the mullite particles. 2. The friction material according to claim 1 , wherein the friction material has a porosity of 14 vol % or more and 30 vol % or less. 3. The friction material according to claim 1 , wherein the matrix is formed of a material containing particles having an average particle diameter of 1 μm or more and less than 50 μm. 4. The friction material according to claim 1 , wherein the matrix contains 0.20 mass % or more and 1.00 mass % or less of P with respect to 100 mass % of the matrix. 5. The friction material according to claim 1 , wherein the matrix contains Ni and Fe. 6. The friction material according to claim 1 , wherein a total content of the zircon particles, the titania particles, and the mullite particles is 80 mass % or more with respect to a total amount of the inorganic particles. 7. The friction material according to claim 1 , wherein the zircon particles have an average particle diameter of 10 μm or more and 600 μm or less, the titania particles have an average particle diameter of 10 μm or more and 600 μm or less, and the mullite particles have an average particle diameter of 10 μm or more and 600 μm or less. 8. The friction material according to claim 1 , wherein the lubricant contains graphite or contains graphite and calcium fluoride. 9. A brake pad comprising the friction material according to claim 1 .
Assignees
Inventors
Classifications
Combination of different friction materials · CPC title
Inorganic, e.g. non-asbestos mineral fibres · CPC title
- F16D69/027Primary
Compositions based on metals or inorganic oxides · CPC title
being characterised by their size · CPC title
Ceramic base, e.g. metal oxides or ceramic binder · 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 US11698118B2 cover?
- The present invention provides a friction material and a brake pad having excellent wear resistance while exhibiting a high friction coefficient under high-temperature and high-speed conditions. A friction material containing: 40 mass % or more and 80 mass % or less of a matrix containing at least one kind selected from the group consisting of Ni and Fe; 10 mass % or more and 30 mass % or less …
- Who is the assignee on this patent?
- Tungaloy Corp
- What technology area does this patent fall under?
- Primary CPC classification F16D69/027. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jul 11 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).