Abstract: The method of constructing multi-layered hoses of plastic materials in which a coating comprising resorcinol, urethane adhesive and a solvent is applied to the outer surface of an inner tubular member or layer of either polyamide or polyester with the solvent acting as a carrier for the resorcinol and adhesive, removing a major portion of the solvent from the coating, and applying an outer tubular layer of a plastic material such as polyamide, polyester, polyurethane or polyvinyl chloride, but of a different material than the inner layer, over the inner layer in contact with the coating.

Abstract: A method for making hose including the steps of spiralling plies of thermoplastic tubing over a vulcanizable elastomeric tube where the tubing of successive plies are oppositely spiralled from each other; pressurizing and sealing the tubing; heating the assembly to a temperature lower than the melting point of the tubing; and vulcanizing the elastomeric tube.

Abstract: A hose having a cover and carcass reinforced tube between which are disposed successive plies of spiralled multiple-end tubing and preferably a cellular foam matrix, the successive tubing plies generally nesting with each other.

Abstract: A method of constructing a finished hose that includes a synthetic rubber core tube, comprising extruding the tube over a mandrel, completely curing the tube, applying a bonding agent to the tube, and applying reinforcement and covering over the tube so that it becomes bonded thereto, and removing the mandrel, whereby only the synthetic rubber core tube is subjected to the curing process.

Abstract: A dimensionally stable, flexible, hydraulic hose having an elastomeric core tube cross-linked by irradiation with ionizing electrons, a fibrous reinforcing layer surrounding the core tube which prevents the core tube from expanding with increase in pressure and a protective elastomeric sheath about the reinforced core tube.

Abstract: A method of forming hose construction utilizing an aromatic polyester thermoplastic core and reinforcing means mechanically bonded about the core with the core portion in which the reinforcing means is embedded being substantially free of stress. A sheath may be provided about the reinforcing means and may be autogenously bonded to "Hytrel", an aromatic polyester thermoplastic body of material coating the reinforcing means.

Abstract: A batch process for vulcanizing, without the use of a lead press, reinforced elastomeric hose built up on a solid mandrel, preferably a flexible mandrel of rubber or thermoplastic material, is disclosed. In the preferred embodiment of the process, the uncured hose is first annularly tightly clamped at its opposite ends and is then immersed in a bath of liquid, e.g. water, sufficient to cover the hose substantially completely. The entire assembly is then subjected in a pressurized heating environment, e.g. in a steam-filled vulcanizer or autoclave, to the action of fluid pressure against the outer hose surface and the pressure due to the thermal expansion of the mandrel against the inner hose surface. The clamping of the hose ends prevents entry of fluid pressure into the space between any two proximate layers of elastomeric material occupied by a layer of the filamentary reinforcement.

Abstract: Apparatus for generating wire reinforced tubular duct featuring a cantilever mounted mandrel supported for rotation and serving as a supporting surface about which lapping wraps of flexible strip of duct material are formed along a helical path around and forwardly off the mandrel. A helical guide fixed in relation to the mandrel and an endless drive belt coact to drive the flexible duct material along its helical path with the drive belt serving to advance the flexible duct material axially along the mandrel and to rotate the mandrel.

Abstract: A hose includes a hollow plastic core having an indirectly heatable agent bonded to the exterior thereof by a heat seal. A reinforcing net is embedded in the agent when heated and the composite structure covered with a coating.

Abstract: An improved hose construction and method of forming the same wherein a reinforcement layer is bonded to a thermoplastic core by a solventless bonding layer defining an inner thermal weld portion substantially autogenous with the outer surface portion of the core tube and an outer portion mechanically interlocked with the confronting inner portion of the reinforcement layer.The bonding layer is thermally formed to be autogenous with the outer surface portion of the core tube and may include an added layer of thermoplastic material which is concurrently fused to define the fused bonding layer. The added layer is compatible with the core tube outer surface portion and is preferably formed of similar thermoplastic material. The reinforcement layer is wrapped about the core tube under tension to provide an embedment thereof in the bonding layer to effect a positive mechanical interlocking therebetween.

Abstract: In the described process for the manufacture of reinforced hoses of elastomeric material having a hollow space in their wall, said hollow space is formed by means of a structural shape helically positioned between the two assemblies of layers which constitute in their whole the wall of the hose, and during curing the hollow space is filled with a material inert to curing, which is discharged in liquid state from the hollow space after curing.