A reinforced flexible hose comprising as least a first inner extruded tubular layer and at least a second extruded tubular layer with a tubular reinforcement fabric provided between said first and second hoses. The two tubes are joined so as to form a homogeneous unit by their mutual contact surfaces, by gluing or molecular adhesion, for example. The end portion of the hose increases in width so much as to make it possible to achieve a better mechanical hold with the standard junctions to which ...

A self-retracting flexible composite hose of helical configuration has a core tube and sheath of crystalline-like polymer which has an elastic memory, a layer of helically wound spaced strands of fibrous reinforcing material which only partially covers the core tube and polymeric protuberances integral with the sheath extending between the strands and fusion welded to the core tube.

Novel thermoplastic pipes which can withstand internally generated and/or applied pressures for utilization within, primarily, underground liquid and gas transport systems are provided. Such pipes are improvements over standard metal (i.e., steel, lead, and the like) pipes due to construction costs, shipping costs, implementation costs (particularly underground), flexibility (and thus modulus strength allowances) to compensate for underground movements (i.e., earthquakes and tremors), non-rustin...

An improved reinforced hose for conducting fluids and gases, and a method of manufacturing that hose, are disclosed herein. The improved reinforced hose includes an interior tube having an inner bore and an outer surface. The improved reinforced hose also includes an outer covering disposed directly about the outer surface of the interior tube. Such outer covering includes one or more layers of plastic threads, which are formed by disposing a plastic substance about core material.

A method for producing a homogeneous material with an extruder is provided. The extruder has at least two annular conical feed gaps situated between a rotatable rotor and a stator so that the material to be extruded is supplied between the rotor and the stator. Between the delivery point of the material to be extruded and the nozzle of the extruder in the direction of travel of the material the at least one rotor or stator of the extruder is provided with openings passing therethrough so that at...

A reinforcement structure and a method of assembly of hose-pipe for heavy or light duty use of thick or thin wall construction in which a non-woven matrix material layer supports the reinforcement members in a winding operation during assembly into the hose. More than one layer of matrix may be utilized. The matrix layer and reinforcement members may be applied in the form of a composite strip or strips pre impregnated with polymeric material, of which the following is a specification.

The invention discloses a hose (10) which comprises at least one tubular layer (3) of plastic or rubber material, a mesh-network (4) of the chain type presenting mesh lines (5) and mesh rows (6) having a tubular shape being wound on the external surface of said inner layer, a possible external layer (7), and is characterized in that said mesh rows are slanted in relation to the longitudinal axis of the hose. According to a preferred embodiment the lines (5) of said meshes are slanted in relation...

A heat setting polymeric hose having a high pack, textile reinforcement that shrinks at a temperature at least equal to the heat setting temperature of the polymeric. The hose is made by twining a heat shrinkable and generally untwisted textile reinforcement around a heat curable polymeric tube; applying an adhesive and heat setting polymeric cover over the reinforcement; and heat setting or curing the polymeric while simultaneously shrinking the reinforcement to a predetermined position within ...

A flexible hose adapted to regain its original shape after crushing due to a novel braided-spiral reinforcement layer containing one braid member which is a relatively stiff, uncrimped monofilament and a second braid member which is a flexible textile material crimped around the stiff monofilament at each contact point in the braided spiral layer. The braided spiral imparts improved crush and kink resistance to the hose structure. This hose is particularly useful as a gasoline pump dispensing ho...

An improved high pressure flexible hose and method of making same are provided by providing a flexible plastic tube and applying a layer of an elastomeric adhesive on the outside surface of the tube. An outer cover is braided against the layer of adhesive and the adhesive allowed to set. The properties of the adhesive are such that upon bending the hose the adhesive serves as an elastic connection between the tube and the braided cover to thereby provide improved service life for the hose even u...