Insulated multiwire electric cable having protected solderable and non-heat-sealing conductors

Claim 2

A flexible insulated multiwire electric cable comprising plural uninsulated conductors surrounded by a sheath layer of electrical insulation material, each said uninsulated conductor protected by a layer of lead alloy, non-heat-sealing during formation of the sheath layer at temperatures of 300°-350° C. yet solderable even after accelerated aging, wherein each of said plural uninsulated electric conductors is individually coated with a said layer of lead alloy which has good wetability and excellent solderability and which does not lead to the formation of a nonsolderable brittle intermetallic compound, said layer being constituted by 100% alloy, said alloy consisting essentially of lead within the range 90% to 99% and tin within the range of 10% to 1%.

Claim 3

A flexible insulated multiwire electric cable comprising plural uninsulated conductors surrounded by a sheath layer of electrical insulation material, each said uninsulated conductor protected by a layer of lead alloy, non-heat-sealing during formation of the sheath layer at temperatures of 300°-350° C. yet solderable even after accelerated aging, wherein each of said plural uninsulated electric conductors is individually coated with a said layer of lead alloy which has good wetability and excellent solderability and which does not lead to the formation of a nonsolderable brittle intermetallic compound, said layer being constituted by 100% alloy, said alloy consisting essentially of lead within the range 90% to 99% and silver within the range 10% to 1%.

Claim 4

A flexible insulated multiwire electric cable comprising plural uninsulated conductors surrounded by a sheath layer of electrical insulation material, each said uninsulated conductor protected by a layer of lead alloy, non-heat-sealing during formation of the sheath layer at temperatures of 300°-350° C. yet solderable even after accelerated aging, wherein each of said plural uninsulated electric conductors is individually coated with a said layer of lead alloy which has good wetability and excellent solderability and which does not lead to the formation of a nonsolderable brittle intermetallic compound, said layer being constituted by 100% alloy, said alloy consisting essentially of lead within the range 90% to 99% and silver within the range 10% to 1%.

Claim 5

A flexible insulated multiwire electric cable comprising plural uninsulated conductors surrounded by a sheath layer of electrical insulation material, each said uninsulated conductor protected by a layer of lead alloy, non-heat-sealing during formation of the sheath layer at temperatures 300°-350° C. yet solderable even after accelerated aging, wherein each of said plural uninsulated electric conductors is individually coated with a said layer of lead alloy which has good wetability and excellent solderability and which does not lead to the formation of a nonsolderable brittle intermetallic compound, said layer being constituted by 100% alloy, said alloy consisting essentially of lead within the range 90% to 99%, tin within the range 10% to 1% and silver forming the complement.

Claim 6

A flexible insulated multiwire electric cable comprising plural uninsulated conductors surrounded by a sheath layer of electrical insulation material, each said uninsulated conductor protected by a layer of lead alloy, non-heat-sealing during formation of the sheath layer at temperatures 300°-350° C. yet solderable even after accelerated aging, wherein each of said plural uninsulated electric conductors is individually coated with a said layer of lead alloy which has good wetability and excellent solderability and which does not lead to the formation of a nonsolderable brittle intermetallic compound, said layer being constituted by 100% alloy, said alloy consisting essentially of lead within the range 90% to 99%, tin within the range 10% to 1% and silver forming the complement.

Claim 7

The cable as claimed in claim 1, 2 or 3 in which said uninsulated electric conductors are individually coated with said layer of lead alloy having a thickness ranging from one to ten microns according to the dipping process.