Transmission belt manufacturing method and transmission belt
US-2016347013-A1 · Dec 1, 2016 · US
Power transmission belt and belt transmission system including the power transmission belt
US9765851B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9765851-B2 |
| Application number | US-201615334745-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 26, 2016 |
| Priority date | Jun 20, 2014 |
| Publication date | Sep 19, 2017 |
| Grant date | Sep 19, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A power transmission belt has a cord embedded in a belt body made of rubber. The cord is configured as a plied yarn with a total fiber fineness of 4000 to 5000 dtex. The plied yarn consists of four primarily-twisted yarns, each being obtained by subjecting a bundle of para-aramid fibers with a fiber fineness of 1000 to 1250 dtex to a primary twist in one direction at a twist coefficient of 1200 to 1350, and these four primarily-twisted yarns are then secondarily twisted in the opposite direction to the primary twist at a twist coefficient of 900 to 1100, thereby obtaining the plied yarn.
First claim
Opening claim text (preview).
What is claimed is: 1. A power transmission belt with a cord embedded in a belt body made of rubber, wherein the cord is configured as a plied yarn with a total fiber fineness of 4000 to 5000 dtex, the plied yarn consisting of four primarily-twisted yarns, each being obtained by subjecting a bundle of para-aramid fibers with a fiber fineness of 1000 to 1250 dtex to a primary twist in one direction at a twist coefficient of 1200 to 1350, and the four primarily-twisted yarns are subjected to a secondary twist in an opposite direction to the primary twist at a twist coefficient of 900 to 1100 to make the plied yarn. 2. The power transmission belt of claim 1 , wherein a ratio of the twist coefficient of the secondary twist to that of the primary twist (twist coefficient of the secondary twist/the twist coefficient of the primary twist) of the plied yarn which constitutes the cord is 0.5 to 1. 3. The power transmission belt of claim 1 , wherein each of the four primarily-twisted yarns of the plied yarn that constitutes the cord is primarily twisted 35 to 46 times/10 cm. 4. The power transmission belt of claim 1 , wherein the plied yarn that constitutes the cord is secondarily twisted 13 to 19 times/10 cm. 5. The power transmission belt of claim 1 , wherein the cord has an outside diameter of 0.73 to 0.83 mm. 6. The power transmission belt of claim 1 , wherein the plied yarn that constitutes the cord has a strength of more than or equal to 680 N. 7. The power transmission belt of claim 1 , wherein the cord is configured as a single plied yarn, of which the secondary twist is a Z-twist. 8. The power transmission belt of claim 1 , wherein the four primarily-twisted yarns of the plied yarn that constitutes the cord have the same fiber fineness. 9. The power transmission belt of claim 1 , wherein the four primarily-twisted yarns of the plied yarn that constitutes the cord have the same primary twist coefficient. 10. The power transmission belt of claim 1 , wherein each of the four primarily-twisted yarns of the plied yarn that constitutes the cord has a fiber fineness of 1100 dtex. 11. The power transmission belt of claim 1 , wherein the plied yarn that constitutes the cord has a total fiber fineness of 4400 dtex. 12. The power transmission belt of claim 1 , wherein the belt body is a V-ribbed belt body. 13. The power transmission belt of claim 12 , wherein the power transmission belt has a strength of more than or equal to 2.4 kN per width of a V-shaped rib. 14. A belt transmission system in which the power transmission belt of claim 1 is wound around a plurality of pulleys.
Assignees
Inventors
Classifications
with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley · CPC title
with textile reinforcement · CPC title
- F16G1/08Primary
with reinforcement bonded by the rubber · CPC title
- F16G5/08Primary
with textile reinforcement · CPC title
with a contact surface of special shape, e.g. toothed · CPC title
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- What does patent US9765851B2 cover?
- A power transmission belt has a cord embedded in a belt body made of rubber. The cord is configured as a plied yarn with a total fiber fineness of 4000 to 5000 dtex. The plied yarn consists of four primarily-twisted yarns, each being obtained by subjecting a bundle of para-aramid fibers with a fiber fineness of 1000 to 1250 dtex to a primary twist in one direction at a twist coefficient of 1200…
- Who is the assignee on this patent?
- Bando Chemical Ind
- What technology area does this patent fall under?
- Primary CPC classification F16G1/08. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 19 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).