Abstract: A fire safety coating, particularly intended for application to hydrocarbon-conducting steel pipes (1) in the splash zone underneath oil plants at sea, consists of at least three layers, where the outer layer (5) is a mechanical protecting layer of rubber or plastic material, the next inside layer (4) is a flame-stopping layer comprising inorganic fibers and a rubber material, and an inside layer (3) is a rubber material which reacts particularly at a high temperature to liberate gases which both prevent inward penetration of oxygen and cause a transformation of the rubber material in the flame-stopping layer (4) to form a hard shell.

Abstract: Lightly crosslinked aromatic polymers are suitable in water sealing applications such as geomembranes used around building sub structures and also in cable jacketing to protect submarine cables from moisture intrusion.

Abstract: There is provided an elastomeric composition including a kaolinitic clay mineral filler, characterised in that said kaolinitic clay mineral (a) is a hydrous kaolinitic clay mineral which has a content of non-exchangeable alkali metal cations not exceeding 10,000 ppm (parts by weight per million parts by weight of dry clay) and a content of exchangeable alkali metal cations not exceeding 750 ppm or (b) is a calcined kaolinitic clay mineral prepared by calcining a hydrous kaolinitic clay mineral having a content of non-exchangeable alkali metal cations not exceeding 10,000 ppm and a content of exchangeable alkali metal cations not exceeding 750 ppm.

Abstract: The disclosure herein describes a flame resistant electric cable which is capable of resisting flame temperatures in the neighborhood of 1000.degree. C. for at least two hours; the cable comprises an electrical conductor including an electrical wire, an extruded elongate tubular member made of silicone surrounding the electrical wire, and an outer protective layer of braided inorganic material which surrounds the tubular member; an overall outer braided jacket surrounds the electrical conductor.

Abstract: An electric cable is disclosed that has improved burn resistance characteristics. The improved electric cable consists of an insulation portion that has a glass fiber yarn wrapped around the conductor. The glass fiber yarn is impregnated at an outer periphery by a first silicone mixture. A second silicone mixture is coated about the outer periphery of the glass fiber yarn. In an alternative embodiment, a silicone tape replaces the Fiberglas.TM. yarn. The improved insulation for electric cable is envisioned for use with both single strand and multi-strand wires.

Abstract: An electric cable is disclosed that has improved burn resistance characteristics. The improved electric cable consists of a insulation portion that has a glass fiber yarn wrapped around the conductor. The yarn is impregnated at an outer periphery by a first silicone compound. A second silicone compound is coated about the outer periphery of the glass fiber yarn. In an alternative embodiment, a silicone tape replaces the glass fiber yarn. The improved insulation for electric cable is envisioned for use with both single strand and multi-strand wires.

Abstract: A flame-retardant composition is prepared by mixing 100 parts by weight of a rubber or plastics free from any halogen with about 50 to about 200 parts by weight of magnesium hydroxide having an average particle diameter of about 0.3 to about 2 .mu.m and about 5 to about 50 parts by weight of carbon black powder having an oil absorption of about 0.5 to about 2.0 ml/g, and then cross-linking the mixture with an organic peroxide, sulfur, or a sulfur compound as a vulcanizing agent. By forming an electrical insulation and/or a sheath of the flame-retardant composition, there is provided a flame-retardant cable of the type including a cable core composed of an electric conductor coated with the electrical insulation or a plurality of such cores twisted together and covered, together with a filler, with the sheath.

Abstract: The cable of this invention comprises a pair of solid, flat, flexible electrical conductors of beryllium-copper attached to a reinforcing webbing of braided nylon. The ends of the conductors are soldered to electrical connector sockets and pins which are supported by glass reinforced resin disks. The webbing is tensioned while being molded inside a water impermeable elastomer which also encompasses the conductors, disks, and end portion of the sockets and pins. A second molding operation covers the water impermeable elastomer with a tough elastomer to form the cable including integral connector bodies incorporating the sockets and pins.

Abstract: An electrical cable for a submersible well pump has an internal fabric layer for providing additional hoop strength. The cable has a plurality of conductors. Each conductor is surrounded by an insulating layer that is permeable to gas. A woven fabric layer surrounds each insulating layer. An elastomeric jacket is extruded over and preferably bonded to each fabric layer. The jacket has flocked fibers to allow gas desorption while pulling the cable to the surface.

Abstract: An armored electrical cable which is especially useful in oil wells and provides resistance to corrosion, explosive decompression and transverse compressive forces. The cable comprises an insulated conductor, a barrier layer enclosing the insulation, a filler layer enclosing the barrier layer, and a square compression-resistant layer enclosing the filler layer. The barrier layer is a lead sheath having a closed cross section with an exterior including four right angle corners oriented in a square and four convex areas, each interconnecting a pair of adjacent right angle corners. The filler layer comprises a thermosetting tape, an open-mesh fabric tape, and a polymeric tape of low frictional coefficient.

Abstract: A reinforced insulated electrical cable and a method of forming the cable, which is especially useful in oil wells. The reinforcement comprises a thin tape of thermosetting material imbedded with an open-mesh fabric, the tape being spirally wrapped directly around the cable's insulation. The tape is wrapped in unvulcanized form and is then vulcanized in place over the insulation. The layer of open-mesh fabric is spaced from the outer surface of the insulation so that, during vulcanization, the insulation can radially outwardly expand without contacting and thus deforming the fabric, and at the same time the insulation can push part of the thermosetting material through the spaces in the fabric.

Abstract: An apparatus and method for producing a replicate, void free, impermeable, ymmetrical electrical insulation barrier for stator motor coils is described wherein a silicone rubber compound is employed as an insulator around the preformed stator coils in a copper-beryllium mold. The coil insulation is cured at a predetermined temperature after being subjected to pressure in the mold.