Cable and method for manufacturing a synthetic cable

Patent metadata

Field	Value
Publication number	US-9816228-B2
Application number	US-201414908207-A
Country	US
Kind code	B2
Filing date	Jul 29, 2014
Priority date	Jul 29, 2013
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

The present invention relates to synthetic cables comprising core and splicing threads with high modulus threads, wherein the ends of the cable comprise looped or eyelet splice-type termination ends ( 1 ), and wherein each leg of the parallel splicing threads ( 13, 13 ′) is connected to parallel core threads ( 21 ) at an interpenetration region ( 12 ). The method comprises individually connecting each leg of the splicing threads ( 13 ) with a positive splice to a core thread(s) ( 21 ) of the beginning end of the cable ( 2 ); looping; straining all the threads and applying a normal compression force at the interpenetration region ( 12 ); applying a protective element(s) ( 32 ) along the cable and further individually connecting each leg of the splicing threads ( 21 ) to form a negative splice to a core thread(s) ( 21 ) of the final end of the cable core ( 2 ); and looping, straining and applying a normal compression force ( 12 ) on the negative splice at the interpenetration region.

First claim

What is claimed is:

1. A synthetic cable comprising a core formed by high modulus threads arranged in parallel to each other, wherein the ends of the cable comprise splice-type termination ends, wherein each splice comprises high modulus threads arranged in parallel to each other forming an eyelet in each splice,
characterized in that each leg of the threads comprising each splice is connected to a thread comprising the core of the cable, wherein the splice threads and the core threads are arranged in parallel to each other in a interpenetration region.

2. The cable of claim 1 , characterized by comprising a means for application of a normal compression force at the interpenetration region, wherein the means for application of a normal compression force is selected from the group consisting of external tightening threads; tightening ribbons; and tightening screens.

3. The cable of claim 1 , characterized in that each eyelet comprises a thimble protector against wearing.

4. The cable of claim 2 , characterized in that the splice comprises, at the interpenetration region, at least one of a surface finishing liquid; and an adhesive.

5. A method for manufacturing a synthetic cable comprising a core made of high modulus threads arranged in parallel to each other, wherein the ends of the cable comprise splice-type termination ends, wherein each splice comprises high modulus threads arranged in parallel to each other, characterized by comprising the steps of:
individually connecting each leg of the wires comprising a positive splice to a thread of the beginning end of the cable core, forming a loop;
joining the threads of the positive splice so as to form a loop, straining all the threads, wherein the splice threads and the core threads are arranged in parallel to each other at an interpenetration region;
applying a normal compression force at the interpenetration region of the positive splice;
applying at least one protective element over the entire length of the cable;
individually connecting each leg of the threads that form a negative splice to a thread of the final end of the cable core, forming a loop;
joining the threads of the positive splice so as to form a loop, straining all the threads, wherein threads from the splice and threads from the core are arranged in parallel to each other at an interpenetration region; and
applying a normal compression force at the interpenetration region of the negative splice.

6. The method for manufacturing a synthetic cable of claim 5 , characterized in that the threads of the positive and negative splices are connected to the threads of the core by means of one of splicers and knoters.

7. The method for manufacturing a synthetic cable of claim 5 , characterized in that the cable further passes through a pull extrusion process.

8. The method for manufacturing a synthetic cable of claim 5 , characterized in that the splices are further coated with reinforcing layers and a cover.

9. The method for manufacturing a synthetic cable of claim 5 , characterized in that the splice threads are stored in accumulator tubes connected to a suction grid, such that connection between the core threads and the splice threads is made by an automated head.

10. The method for manufacturing a synthetic cable of claim 5 , characterized in that:
after the connection between the positive splice threads and the core threads, all the loops of the positive splice are arranged in a hook that is pulled by a flexible cable, such that the core threads are pulled by the positive splice threads;
after the connection between the negative splice threads and the core threads, such that the negative splice threads are pulled by the core threads, wherein all the loops of the negative splice are arranged in a second hook, which is stretched against the movement direction of the first hook to maintain the cable stretched.

11. The method for manufacturing a synthetic cable of claim 10 , characterized in that before the positive splice threads are arranged in the first hook, each loop formed by the positive splice threads is arranged in holes of a hole plate, such that the holes are arranged at positions where the threads should be allocated at the core of the cable.

12. The method for manufacturing a synthetic cable of claim 11 , characterized in that after passing through the hole plate, the splice loops and the core threads of the cable pass through diameter reducing rings, until the normal compression force is applied to the interpenetration region of the positive splice and, thereafter, the at least one protective element over the entire length of the cable.

Assignees

• Braskem Sa

Inventors

• Bueno Marcos Roberto Paulino
• Penaquioni André

Classifications

• D07B3/00

  General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material · CPC title

• D07B2201/2034

  comprising crossing wires or filaments in the same layer · CPC title

• D07B2201/2098

  characterized by special properties or the arrangements of the binding wire · CPC title

• D07B7/16

  Auxiliary apparatus · CPC title

• D07B1/18

  Grommets {(slings B66C1/12)} · CPC title