Small diameter fiber braid with central core member
US-11229432-B2 · Jan 25, 2022 · US
Ropes with enhanced CBOS fatigue life
US11713545B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11713545-B2 |
| Application number | US-202117382402-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 22, 2021 |
| Priority date | Jul 24, 2020 |
| Publication date | Aug 1, 2023 |
| Grant date | Aug 1, 2023 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1.
First claim
Opening claim text (preview).
What is claimed is: 1. A rope comprising bundles of filaments, wherein each bundle comprises at least 70% by volume of liquid crystal polymer filaments, and wherein at least one bundle comprises liquid crystal polymer filaments of at least 10 denier per filament in size. 2. The rope of claim 1 , wherein the liquid crystal polymer filaments comprise thermotropic liquid crystal polymer filaments. 3. The rope of claim 2 , wherein the thermotropic liquid crystal polymer filaments comprise an aromatic polyester formed by the polycondensation of 4-hydroxybenzoic acid and 6-hydroxynaphthalene-2-carboxylic acid. 4. The rope of claim 1 , wherein the liquid crystal polymer filaments comprise lyotropic liquid crystal polymer filaments. 5. The rope of claim 4 , wherein the lyotropic liquid crystal polymer filaments comprise an aramid or a copolymer aramid. 6. The rope of claim 1 , wherein the rope has a cross-sectional diameter of at least 6 mm. 7. The rope of claim 1 , wherein the rope has a cross-sectional diameter of 6 mm to 200 mm. 8. The rope of claim 1 , wherein each bundle comprises 15 to 5000 of the liquid crystal polymer filaments. 9. The rope of claim 1 , wherein the rope is a twisted, stranded, or wire-lay rope. 10. The rope of claim 1 , wherein the rope is a braided rope. 11. The rope of claim 1 , wherein each bundle comprises at least 80% by volume of liquid crystal polymer filaments. 12. The rope of claim 1 , wherein each bundle comprises at least 90% by volume of liquid crystal polymer filaments. 13. The rope of claim 1 , wherein each bundle comprises at least 95% by volume of liquid crystal polymer filaments. 14. The rope of claim 1 , wherein each bundle comprises at least 99% by volume of liquid crystal polymer filaments. 15. The rope of claim 1 , wherein each bundle consists of liquid crystal polymer filaments. 16. The rope of claim 1 , wherein at least one bundle comprises liquid crystal polymer filaments of 10 to 100 denier per filament in size. 17. The rope of claim 1 , wherein each bundle comprises liquid crystal polymer filaments of 10 to 100 denier per filament in size. 18. A method of pulling or lifting an object, comprising applying tension to a rope connected to the object, wherein: the rope is the rope of claim 1 , the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1. 19. The method of claim 18 , wherein the ratio of the diameter of the sheave or the effective diameter of the non-rotating guide surface, D, to the diameter of the rope, d, is at least 25:1. 20. The method of claim 18 , wherein the ratio of the diameter of the sheave or the effective diameter of the non-rotating guide surface, D, to the diameter of the rope, d, is at least 30:1.
Assignees
Inventors
Classifications
- D07B1/025Primary
comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers · CPC title
the hydroxy and carboxylic ester groups being bound to aromatic rings · CPC title
with both amino and carboxylic groups aromatically bound · CPC title
Compositions for preparing crystalline polymers · CPC title
braided · CPC title
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Frequently asked questions
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- What does patent US11713545B2 cover?
- Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where th…
- Who is the assignee on this patent?
- Kuraray Co
- What technology area does this patent fall under?
- Primary CPC classification D07B1/025. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Aug 01 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).