Bicycle chain
US-10125846-B2 · Nov 13, 2018 · US
Chain
US2023287963A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023287963-A1 |
| Application number | US-202318117965-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 6, 2023 |
| Priority date | Mar 10, 2022 |
| Publication date | Sep 14, 2023 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
The present invention aims at providing a chain with excellent wear resistance, which minimizes chain elongation, reduces vibration and noise, and improves drive efficiency. The chain according to the present invention includes at least a plurality of link plates and a plurality of pins as chain components. The pins and mutually sliding chain components sliding against the pins are formed with a hardened surface layer containing one of Cr carbide, Ti carbide, V carbide, Nb carbide, Cr nitride, Ti nitride, V nitride, and Nb nitride on part or all of respective sliding surfaces. In the case where the chain includes bushings as chain components and the bushings are the mutually sliding chain components, the bushings are formed with the hardened surface layer on part or all of their sliding surfaces.
First claim
Opening claim text (preview).
What is claimed is: 1 . A chain comprising at least a plurality of link plates and a plurality of pins as chain components, the pins and mutually sliding chain components sliding against the pins being formed with a hardened surface layer containing one of Cr carbide, Ti carbide, V carbide, Nb carbide, Cr nitride, Ti nitride, V nitride, and Nb nitride on part or all of respective sliding surfaces. 2 . The chain according to claim 1 , wherein the chain components include bushings fitted on the pins, the mutually sliding chain components being the bushings. 3 . The chain according to claim 1 , wherein the hardened surface layer of the pins has a smaller sliding surface roughness than the hardened surface layer of the mutually sliding chain components. 4 . The chain according to claim 3 , wherein the hardened surface layer of the pins has a sliding surface roughness Rk of 0.04 μm to 0.30 μm, and the hardened surface layer of the mutually sliding chain components has a sliding surface roughness Rk of 0.8 μm to 2.0 μm. 5 . The chain according to claim 1 , wherein the hardened surface layer of the pins and the hardened surface layer of the mutually sliding chain components each have a sliding surface hardness of 1600 HV or more and 3500 HV or less. 6 . The chain according to claim 2 , wherein the bushings have a concave inner circumferential surface.
Assignees
Inventors
Classifications
Chain links · CPC title
- F16G13/07Primary
the links being of identical shape, e.g. cranked · CPC title
with links closely interposed on the joint pins (F16G13/04 takes precedence) · CPC title
- F16G13/06Primary
with links connected by parallel driving-pins with or without rollers {so-called open links} · CPC title
Ferrous alloys, e.g. steel alloys (cast-iron alloys C22C37/00) · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2023287963A1 cover?
- The present invention aims at providing a chain with excellent wear resistance, which minimizes chain elongation, reduces vibration and noise, and improves drive efficiency. The chain according to the present invention includes at least a plurality of link plates and a plurality of pins as chain components. The pins and mutually sliding chain components sliding against the pins are formed with …
- Who is the assignee on this patent?
- Tsubakimoto Chain Co
- What technology area does this patent fall under?
- Primary CPC classification F16G13/07. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Sep 14 2023 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).