Rubber-reinforcing cord and rubber product including same
US-2021087389-A1 · Mar 25, 2021 · US
Toothed belt
US11719309B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11719309-B2 |
| Application number | US-202218090338-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 28, 2022 |
| Priority date | Jul 3, 2020 |
| Publication date | Aug 8, 2023 |
| Grant date | Aug 8, 2023 |
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- Title
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Abstract
Official abstract text for this publication.
A transmission system using a toothed belt includes a belt body made of elastomer and a core wire made of carbon fiber and provided so as to be embedded in the belt body and form a helix having a pitch in a belt width direction. The belt body includes a flat band portion having a horizontally long rectangular cross section and a plurality of tooth portions integrally provided on an inner peripheral side of the flat band portion. A belt tension T0.2 per belt width of 1 mm when a belt elongation rate is 0.2% is 70 N/mm or more, an amount of backlash between the toothed belt and a toothed pulley is 0.10 mm or more and less than 0.65 mm, a hardness of the belt body is 89° or more in JIS K 6253 Durometer Type A, and a surface dynamic friction coefficient is 1.5 or less.
First claim
Opening claim text (preview).
What is claimed is: 1. A transmission system using a toothed belt, the transmission system comprising: a toothed belt including a belt body made of elastomer and a core wire made of carbon fiber and provided so as to be embedded in the belt body and form a helix having a pitch in a belt width direction; and a toothed pulley meshed with the toothed belt, wherein the belt body includes a flat band portion having a horizontally long rectangular cross section and a plurality of tooth portions integrally provided on an inner peripheral side of the flat band portion, the core wire is a single twisted yarn formed by twisting a filament bundle of carbon fiber forming the core wire in one direction, a number of twists of the core wire of the single twisted yarn per length of 10 cm is four times/10 cm or more and twelve times/10 cm or less, and a belt tension T 0.2 per belt width of 1 mm when a belt elongation rate is 0.2% is 70 N/mm or more, an amount of backlash between the toothed belt and a toothed pulley is 0.10 mm or more and less than 0.65 mm, a hardness of the belt body is 89° or more in JIS K 6253 Durometer Type A, and a surface dynamic friction coefficient is 1.5 or less. 2. The transmission system using a toothed belt according to claim 1 , wherein the belt body is formed of a thermosetting elastomer. 3. The transmission system using a toothed belt according to claim 2 , wherein the belt body is formed of a thermosetting polyurethane resin. 4. The transmission system using a toothed belt according to claim 1 , wherein a total number of filaments of carbon fiber forming the core wire is 6000 or more and 48000 or less. 5. The transmission system using a toothed belt according to claim 1 , wherein the pitch is 8 mm or more and 14 mm or less.
Assignees
Inventors
Classifications
- F16G1/28Primary
with a contact surface of special shape, e.g. toothed · CPC title
with textile reinforcement · CPC title
Yarns or threads made from mineral substances · CPC title
with characteristics dependent on the amount or direction of twist · CPC title
Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement · CPC title
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- What does patent US11719309B2 cover?
- A transmission system using a toothed belt includes a belt body made of elastomer and a core wire made of carbon fiber and provided so as to be embedded in the belt body and form a helix having a pitch in a belt width direction. The belt body includes a flat band portion having a horizontally long rectangular cross section and a plurality of tooth portions integrally provided on an inner periph…
- Who is the assignee on this patent?
- Bando Chemical Ind
- What technology area does this patent fall under?
- Primary CPC classification F16G1/28. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 08 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).