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US 4,226,651 AGranted
High voltage cable splicing - additive reaction
OwnerMarvin H. Goldinventor
Life of this patent
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Abstract
A method and composition for effecting splices of high voltage cable sections for use with a mold placed around the cable sections. The composition comprises a liquid polyolefin, a finely divided solid polyolefin and a chain extension agent capable of reacting to form addition polymer linkages with the liquid polyolefin.
Claims15
A process for preparing a splice of two sections of high voltage cable;
- each of which comprises a conductor portion and original electrical insulation surrounding said conductor portion, the conductor position having an exposed end protruding beyond the end of said insulation, said process comprising:
- a. electrically and mechanically joining the exposed ends of said conductor portions to form a conductor,
- b. providing semi-conductive material about the electrical junction,
- c. surrounding the joined section with a mold,
- d. filling the mold with a mixture comprising a liquid polyolefin having addition polymer reactable sites, a chain extension agent reactive with said polyolefin's sites, a particulated solid, saturated polyolefin,
- e. heating the mold to a temperature to effect chain extension of at least the liquid polyolefin, and
- f. raising the temperature to effect polymeric grafting of the chain extended liquid polyolefin onto the solid polyolefin and the cable insulation.
4 more elements
A method for preparing splices for high voltage electrical cable which cable comprises insulation surrounding a conductor section, wherein a pair of such cable conductors have been mechanically and electrically joined, said method comprising;
- a. preparing a castable mixture comprising at least one liquid polyolefin having addition polymer reactable sites, a chain extension compound capable of reacting with said polyolefin's reactive sites, a solid particulated saturated polyolefin,
- b. adding the mixture to a mold which has had the joined conductor sections placed therein,
- c. raising the temperature of the mold to cause chain extension of at least the liquid polyolefin and
- d. raising the temperature of the mold to a higher temperature to effect polymeric grafting of the chain extended liquid polyolefin onto the solid saturated polyolefin, and the cable insulation.
1 more element
Dependencies are inferred from the claim text.