Abstract: Disclosed is an automotive fuel conduit which comprise an inner tube, an outer tube substantially surrounding the inner tube and mechanical locking structure at the interface between the outer surface of the inner tube and the inner surface of the outer tube for preventing substantial relative movement between the inner and outer tubes. The mechanical locking structure preferably comprises a plurality of mating projections and indentations on the inner surface of the outer tube and the outer surface of the inner tube, such as grooves, cuts and ridges. The inner and outer tubes are preferably each formed of polymeric material and each contain both projections and indentations.

Abstract: Methods for reinforcing thin-walled, flexible tubing using pressurized fluids which have excellent mechanical integrity, including burst-strength. The methods comprise pressurizing a tubular conduit with pressurized fluid followed by applying reinforcing means to the conduit.

Abstract: An improved fuel system conduit is disclosed. The fuel system conduits comprise an inner tubular liner and a substantially tubular cover comprising a metal band helically wrapped around said liner for covering and protecting the liner. The helical or spiral wrap allows fuel line flexibility while simultaneously inhibiting kinking. The helical wrap may also be covered by a plastic outer sheath.

Abstract: Disclosed is an oxygen sensor and lead wire therefor. The lead wire has a first end contained within the oxygen sensor and a second end outside the oxygen sensor, the lead wire comprising an electrically insulating wall portion having passage means for providing enhanced fluid communication between the interior of the sensor and the exterior thereof. According to preferred embodiments, such passage means comprises a bore or a passageway in the insulating wall portion.

Abstract: Disclosed is a flexible cable assembly for reliably transmitting motion along a predetermined path in high temperature environments. The assembly comprises a flexible tubular conduit, a crosslinked polyethylene tubular liner for the conduit and a core member movably contained within the conduit for transmitting force or torque along the predetermined path. The assembly preferably exhibits a fictional efficiency of at least about 80% over 500,000 cycles of the 200.degree. F. S-test.

Abstract: This invention relates to composites of fluorocarbon polymers, preferably polytetrafluoroethylene, which contain less than about 23% by weight polyamide-imide resin. More particularly, this invention relates to extrudable polytetrafluoroethylene composites which exhibit improved abrasion and friction resistance and other improved properties over a wide range of temperature and load conditions, and which are particularly adaptable for use as liners in wire insulation and in push-pull cable assemblies.

Abstract: An improved process for coating an inert substrate, such as braided glass fiber sleeving and inert substrates of other materials and shapes, wiht a polymeric material such as a polyacrylate, a polyvinyl chloride, a silicone rubber, or a polyfluorocarbon, said method comprising the steps of: formulating an emulsion of the polymerizable material in water or other suitable polar phase; thickening the emulsion through the addition of an inert, finely-divided, particulate, hydrophilic inorganic oxide substance to a viscosity in the range of from about 35,000 to about 500,000 centipoises; applying the thicknened emulsion in the form of a uniform coating of desired thickness to the sleeving or other inert substrate; passing the coated substrate through a microwave energy chamber and subjecting the thickened emulsion coating to microwave energy of a frequency, at a power density, and for a peirod of time sufficient to substantially devolatilize, or dry and coalesce, said emulsion; and subjecting the devolatilized coa

Abstract: A fluorocarbon composite is provided for use as liners and particularly for use as wire insulation and in extruded tubing for push-pull cable assemblies. The composite has excellent anti-friction and abrasion-resistant properties and can be utilized in environments requiring operation over a wide range of temperatures and load conditions, including high temperature applications. The composition comprises a mixture of a polymer of tetrafluoroethylene and a polymer of arylene sulfide, which mixture may also include a filler.