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AssigneesWestern Electric Company, Inc., Bell Telephone Laboratories, Incorporated
InventorsJoseph Michael Hacker, Stanley Kaufman, Raffaele Antonio Sabia, Earl Salvator Sauer, Charles Edward Tidd, Jr., Raymond Walker
Estimating the term…
A telephone service cable which runs from a distribution cable to a subscriber's premises or to a pay station is another link in a buried communications system having a water-resisting capability. A spirally quaded core comprised of individually insulated conductors is advanced through a bath of a flame-retardant, water-resistant composition prior to enclosing the core with a jacket. The interstices in the core and between the core and an inner jacket are caused to be filled with the composition which comprises a liquid system and a solid system. The liquid system includes a chlorinated paraffin while the solid system includes a polyvinyl chloride resin and a chlorinated polyethylene. An epoxy stabilizer and a phosphite stabilizer may be added to prevent thermal degradation of the filling composition.
An elongated transmission member comprising a plurality of individually insulated conductors having a jacket formed thereover, the interstices formed between the conductors being filled substantially with a flame-retardant, water-resistant composition which comprises a polyvinyl chloride homopolymer, a chlorinated polyethylene, and a chlorinated paraffin where the polyvinyl chloride homopolymer, the chlorinated polyethylene and the chlorinated paraffin are present in an amount range from at least 85.5 parts by weight per 100 parts by weight of the composition.
An elongated transmission member comprising a plurality of individually insulated conductors having a jacket formed thereover, substantially all the interstices formed among the conductors and between ones of the conductors and the jacket being filled substantially with a flame-retardant, water-resistant composition which includes 4.0 to 10.0 percent by weight of a polyvinyl chloride homopolymer material;
A method of making an elongated transmission member comprising a plurality of conductors with substantially all the interstices between the conductors being filled substantially with a flame-retardant, water-resistant composition, which includes the steps of:
Dependencies are inferred from the claim text.