STRAND HAVING A LIMITED SPRING EFFECT

• US 20100252301A1
• Filed: 10/05/2009
• Published: 10/07/2010
• Est. Priority Date: 10/16/2008
• Status: Active Grant

• Current Assignee: Nexans Incorporated (Nokia Corporation)
• Original Assignee: Nexans Incorporated (Nokia Corporation)
• Inventors: Comoret, Emilien, Morice, Stephane, Debladis, Francis
• Granted Patent: US 8,552,290 B2
• Time in Patent Office: Days
• US Class Current: 174/113.R
• CPC Class Codes: H01B 1/026 Alloys based on copper

Abstract

The present invention relates to a strand of section of no more than 0.35 mm² comprising one or more electrical conductor wires, wherein each electrical conductor wire is constituted by an alloy of copper and tin comprising: a tin content of not less than 1500 ppm and not more than 2500 ppm; an oxygen content of not more than 400 ppm; an inevitable impurities content of not more than 100 ppm; and the balance of the content of said alloy being copper; the electrical conductor wire(s) being exempt from heat treatment during fabrication of the strand.

Claims

1. A strand of section of no more than 0.35 mm² comprising:

one or more electrical conductor wires, wherein each electrical conductor wire is constituted by an alloy of copper and tin with;

a tin content of not less than 1500 ppm and not more than 2500 ppm;

an oxygen content of not more than 400 ppm;

an inevitable impurities content of not more than 100 ppm; and

the balance of the content of said alloy being copper;

the electrical conductor wire(s) being exempt from heat treatment during fabrication of the strand.

2. A strand according to claim 1, wherein the tin content is strictly greater than 1500 ppm.

3. A strand according to claim 1, wherein the tin content is not less than 1700 ppm.

4. A strand according to claim 1, wherein the tin content is not more than 2200 ppm.

6. A strand according to claim 1, wherein the strand is not circularly compressed.

7. An electric cable including a strand as defined in claim 1, extending in the longitudinal direction of the cable, said strand being surrounded along the cable by an insulating sheath.

8. A cabling bundle comprising a plurality of electric cables according to claim 7.

5. A strand of section of no more than 0.35 mm² comprising:

one or more electrical conductor wires, wherein each electrical conductor wire is constituted by an alloy of copper and tin with;

a tin content of not less than 700 ppm and not more than 1200 ppm;

an oxygen content of not greater than 50 ppm, and preferably not greater than 5 ppm;

an inevitable impurities content of not more than 100 ppm; and

the balance of the content of said alloy being copper;

the electrical conductor wire(s) being exempt from heat treatment during fabrication of the strand.

9. An electric cable including a strand as defined in claims 5, extending in the longitudinal direction of the cable, said strand being surrounded along the cable by an insulating sheath.

10. A cabling bundle comprising a plurality of electric cables according to claim 9.