A device for connecting a tubular element such as a hose or pipe to a part of a hydraulic or pneumatic system includes: a body having a connection end and a tubular element insertion end, the body having a cylindrical channel extending from the connection end to the tubular element insertion end, the connection end being connecting to the part of the hydraulic or pneumatic system, the cylindrical channel including a first part and a second part, the first part being arranged in the tubular element insertion end and the second part being arranged in the connection end. The tubular element insertion end includes at a middle section a recess extending radially from the first part of the cylindrical channel, along an entire circumference, the recess bordering the second part of the cylindrical channel. The tubular element insertion end includes at least one bore.

An improved Type C air conditioning hose is provided that meets or exceeds SAE J2064 and J3062 requirements, offers good flexibility and fracture resistance, and exhibits improved permeation ratings for refrigerants including R134a and R1234yf. The multilayer type C barrier air conditioning hose includes a novel inner elastomeric tube layer capable of direct bonding to plastic without an intervening adhesive.

The object of the invention can be a method of manufacturing a product in the form of a sandwich comprising a core and outer layers. The outer layers may be composed of composite material comprising a fiber-reinforced polymeric matrix. The method uses an insert of heat-resistant material, for example silicone. The object of this invention can be to provide a method of manufacturing a sandwich that dissociates the choice of material of the core of the sandwich from the choice of the material of the outer layers.

Helically reinforced, flexible tubing or hose is formed from continuously extruded thermoplastic material helically circumferentially wound at a wrapping station around an array of bearing-supported rods that are concurrently but individually turned and are adjustably canted relative to an imaginary center axis. The tubing or hose being formed has a continuous reinforcing rib helically wound therearound and continuously integrally connected thereto. The resulting tubing or hose may be transversely severed at intervals along its length to provide discrete lengths of hose that are annealed while axially compressed to relieve stress.

The use of PEKK for lowering the CO.sub.2 and H.sub.2S permeability of a part intended to enter into contact with a petroleum effluent. Also, a pipe for transporting a petroleum effluent, including a layer intended to be in contact with the petroleum effluent, wherein the layer intended to be in contact with the petroleum effluent comprises PEKK and has a CO.sub.2 permeability at 130° C. of less than 10.sup.−8 cm.sup.3, for a thickness of 1 cm and a surface area of 1 cm.sup.2 and per second and bar of CO.sub.2 pressure and/or an H.sub.2S permeability at 130° C. of less than 10.sup.−8 cm.sup.3 for a thickness of 1 cm and a surface area of 1 cm.sup.2 and per second and bar of H.sub.2S pressure, the amount of CO.sub.2 and H.sub.2S being measured by GC, respectively. Lastly, a number of methods for manufacturing such a pipe.

An inline mixer device includes a flexible tube and a mixer portion. The mixer portion is internal to and integral with the tube. The mixer portion and tube may be comprised of the same flexible material. Methods of forming the inline mixer device are provided. Methods of mixing fluid with the inline mixer device are provided.

A flexible fiber reinforced hose adapted for conveying fluids under pressure. The reinforced hose having a core tube having at least one reinforcement layer surrounding an outer core tube surface. Each reinforcement layer having one or more woven mats, unwoven mats, or bundle of fibers comprising a plurality of reinforcement fibers that has a binder-resin filling at least a portion of the voids of the reinforcement fibers. In some aspects, the binder-resin adheres to the reinforcement fibers and displaces the air voids at the interface between the reinforcement fibers and the binder-resin. The binder-resin has a relatively low viscosity less than at least about 20,000 centipoise at 176° C. and low molecular weight, which allows the reinforcement layer to maintain a low flex modulus while maintaining or increasing tensile modulus. The reinforced hose also has at least one polymer layer that bonds to the binder-resin of the reinforcement layer, preferably being cross-linkable or cross-linked to the polymer layer.

A marked guide includes an elongated body having a bendable core with a length dimension and made of material that is bendable along the length dimension to selectively form various bent shapes, and that retains the bent shapes without external support. The elongated body also has at least one layer of second material provided around the core, the second material being elastomeric or resiliently flexible. An outer surface of the body has a plurality of markings, including a first line marking positioned at a 0-degree point, a second line marking positioned at a 90-degree point, a third line marking positioned at a 180-degree point and a fourth line marking positioned at a 270-degree point.

A fiber-reinforced composite material having at least one reinforcement layer having one or more woven mats, unwoven mats, or bundle of fibers comprising a plurality of reinforcement fibers that has a binder-resin filling at least a portion of the voids of the reinforcement fibers. In some aspects, the binder-resin adheres to the reinforcement fibers and displaces the air voids at the interface between the reinforcement fibers and the binder-resin. The binder-resin has a relatively low viscosity less than at least about 20,000 centipoise at 176° C. and low molecular weight, which allows the reinforcement layer to maintain a low flex modulus while maintaining or increasing tensile modulus. The fiber-reinforced composite material can be utilized in various articles, such as a flexible fiber reinforced hose adapted for conveying fluids under pressure having at least one polymer layer that bonds to the binder-resin of the reinforcement layer, preferably being cross-linkable or cross-linked to the polymer layer.

Provided is a method for heating or cooling a liquid or a body by means of a vapor compression circuit containing a heat transfer fluid. The vapor compression circuit element includes at least one layer that includes copolyamide of formula X/10.T/Y, where the structural variables are described herein.