Claims
- 1. A multi-wire strand of unilay construction comprising a central layer consisting of at least one wire; at least one additional layer consisting of a plurality of wires stranded about said central layer, at least two of said layers consisting of more than one wire and the number of wires in said layers which consist of more than one wire being such that the number of wires in adjacent layers are integers that are not divisible by a common number with the exception of the integer one, the wires in at least one of the layers being compressed to provide area reductions, and the number of wires in each of the layers being selected such that adjacent wires in each of the layers, with appropriate area reductions, are substantially in contact with each other and the strand configuration has a stable substantially circular cross-section.
- 2. A multi-wire strand as defined in claim 1, wherein one layer consisting of a plurality of wires is compressed to present substantially flat radially outwardly facing surfaces, and wires of another layer consisting of a plurality of wires wound on said one layer circular and abut against said substantially flat surfaces.
- 3. A multi-wire strand as defined in claim 2, wherein said one layer contains 7 wires and said another layer contains 12 wires.
- 4. A multi-wire strand as defined in claim 2, further comprising an insulation layer covering said another layer.
- 5. A multi-wire strand as defined in claim 3, wherein said one and another layers are both compressed to present substantially flat radially outwardly facing surfaces, whereby the strand exhibits a smoother cylindrical surface.
- 6. A multi-wire strand as defined in claim 2, wherein said one layer contains 6 wires and said another layer contains 11 wires.
- 7. A multi-wire strand as defined in claim 6, further comprising an insulation layer covering said another layer.
- 8. A multi-wire strand as defined in claim 6, wherein said one and another layers are both compressed to present substantially flat radially outwardly facing surfaces, whereby the strand exhibits a smoother cylindrical surface.
- 9. A multi-wire strand as defined in claim 1, wherein three layers each consisting of a plurality of wires are comprising 7 wires in a first layer, 12 wires in a second layer and 17 wires in a third layers.
- 10. A multi-wire strand as defined in claim 9, wherein said first and second layers are compressed.
- 11. A multi-wire strand as defined in claim 9, wherein all said three layers are compressed.
- 12. A multi-wire strand as defined in claim 1, wherein area reductions are within the range of 0 to approximately 20%.
- 13. A multi-wire strand as defined in claim 1, wherein said wires in both said central layer and in said at least one additional layers are nominally of the same diameter.
- 14. A method of forming a multi-wire strand of unilay construction comprising the steps of stranding at least one additional layer consisting of a plurality of wires about a central layer consisting of at least one wire, at least two of said layers consisting of more than one wire and the number of wires in said central layer and additional layers which consist of more than one wire being such that the number of wires in adjacent layers are integers that are not divisible by a common number with the exception of the integer one; and compressing the wires in at least one of the layers to provide area reductions therein, the number of wires in each of the layers being selected such that adjacent wires in each of the layers, with appropriate area reductions, are substantially in contact with each other and the strand configuration has a stable substantially circular cross-section.
- 15. A method as defined in claim 14, wherein a second layer consisting of a plurality of wires applied about a first layer consisting of a plurality of wires.
- 16. A method as defined in claim 14, wherein one of said additional layers is compressed to present substantially flat radially outwardly facing surfaces.
- 17. A method as defined in claim 14, wherein one layer consisting of a plurality of wires is wound with 7 wires and wires of another layer consisting of a plurality of wires wound on said one layer wound with 12 wires.
- 18. A method as defined in claim 17, further comprising the step of applying an insulation layer to said another layer.
- 19. A method as defined in claim 14, wherein two additional layers are wound on said central layer, and wherein both said additional layers are compressed to present substantially flat radially outwardly facing surfaces, whereby the strand exhibits a smoother cylindrical surface.
- 20. A method as defined in claim 14, wherein one layer has 6 wires and another layer wound on said one layer has 11 wires.
- 21. A method as defined in claim 14, wherein the strand is passed through a sizing die.
- 22. A method as defined in claim 14, wherein three additional layers are wound on said central layer and consist of 7 wires in said first additional layer, 12 wires in a second additional layer and 17 wires in a third additional layer.
- 23. A method as defined in claim 14, wherein area reductions are within the range of 0 to approximately 20%.
- 24. A method as defined in claim 14, wherein said wires in both said central layer and in said at least one additional layer are nominally of the same diameter.
- 25. A sectored multi-wire strand of unilay construction comprising a central layer consisting of a least one wire; at least one additional layer consisting of a plurality of wires stranded about said central layer, at least two of said layers consisting of more than one wire and the number of wires in said layers which consist of more than one wire being such that the number of wires in adjacent layers are integers that are not divisible by a common number with the exception of the integer one, the wires in at least one of the layers being compressed to provide area reductions and the number of wires in each of the layers being selected such that adjacent wires in each of the layers, with appropriate area reductions, are substantially in contact with each other and the strand configuration has a stable substantially sectored cross-section.
- 26. A sectored multi-strand as defined in claim 25, wherein area reductions are within the range of 0 to approximately 20%.
- 27. A sectored multi-strand as defined in claim 25, wherein said wires in both said central layer and in said at least one additional layer are nominally of the same diameter.
- 28. A method of forming a sectored multi-wire strand of unilay construction comprising the steps of stranding at least one additional layer consisting of a plurality of wires about a central layer consisting of at least one wire, at least two of said layers consisting of more than one wire and the number of wires in said central layer and additional layers which consist of more than one wire being such that the number of wires in adjacent layers are integers that are not divisible by a common number with the exception of the integer one; compressing the wires in at least one of the layers to provide area reductions therein, the number of wires in each of the layers being selected such that adjacent wires in each of the layers, with appropriate area reductions, are substantially in contact with each other and the strand configuration has a stable substantially circular cross-section; and forming the strand of circular cross-section to impart a sectored configuration to the strand.
- 29. A method as defined in claim 28, wherein area reductions are within the range of 0 to approximately 20%.
- 30. A method as defined in claim 28, wherein said wires in both said central layer and in said at least one additional layer are nominally of the same diameter.
CROSS-SECTION TO RELATED APPLICATION
This application is a continuation-in-part of U.S. application Ser. No. 07/873,312 filed Apr. 24, 1992, issued as U.S. Pat. No. 5,260,516.
US Referenced Citations (17)
Foreign Referenced Citations (3)
Number |
Date |
Country |
1166187 |
Nov 1958 |
FRX |
909714 |
Mar 1954 |
DEX |
673219 |
Jun 1952 |
GBX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
873312 |
Apr 1992 |
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