Electric conductor adapted for use in process instrumentation
AssigneeSamuel Moore and Company
InventorsClifford R. Stine, Bruce E. Klipec, William J. Herbert
Life of this patent
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Abstract
An electrically insulated conductor adapted to be used at high temperatures in power plants, refineries and chemical process plants for connecting instruments has at least one pair of electrical conductors insulated with an irradiation cured ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer or polyvinyl chloride polymer and a drain wire enclosed in a metallic shield and an irradiation cured halosulfonated polyethylene, polychloroprene or chlorinated polyethylene jacket.
Claims13
An electrical cable having improved dimensional stability and other properties which adapt it for use at elevated temperatures comprising at least two electrical conductors each having (1) an electrical insulating coating, said coating being an irradiation cured member selected from the group consisting of ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer and polyvinyl chloride, and (2) a protective jacket selected from the group consisting of irradiation cured halosulfonated polyethylene polymer, a polychloroprene and chlorinated polyethylene about the insulated conductors.
A method of making an electrical cable having improved dimensional stability comprising providing at least two electrical conductors each having an electrical insulating coating, said coating being a member selected from the group consisting of an ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer and polyvinyl chloride, extruding a jacket selected from the group consisting of a chlorosulfonated polyethylene polymer, polychloroprene and chlorinated polyethylene over the insulated conductors, and subjecting the resulting product to irradiation until the polymer of the said jacket is cross-linked.
An electrical cable adapted to be used at elevated temperatures comprising electrical conductors each electrically insulated with an insulating coating comprising an irradiation cured resin selected from the group consisting of ethylene-tetrafluoroethylene co-polymer, ethylene-chlorotrifluoroethylene co-polymer and polyvinyl chloride enclosed in a layer of irradiation cured synthetic resin selected from the group consisting of halosulfonated polyethylene polymer, a polychloroprene and a chlorinated polyethylene, said electrical conductors being twisted together to form a cable.
Dependencies are inferred from the claim text.