A method for lining an existing pipe uses a tubular lining material comprising a flexible resin absorber impregnated therein with a liquid setting resin. One end part of the lining material is radially spread to form cut pieces. The cut pieces of the lining material are laid on a flange comprising a flexible resin absorber impregnated with a liquid setting resin. The flange and the cut pieces of the lining material are brought into pressure contact with a surface surrounding a pipe opening of th...

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 bell end on a pipe of thermoplastic material has variable wall thickness in the axial direction, the maximum being where the inner wall acts as a sealing face. The bell end can be formed by upsetting the pipe wall into the cavity between a mandril and a shaping sleeve.

The present invention relates to fluoropolymer tubes which exhibit excellent properties such as strength, wear resistance and dimensional stability when subjected to repeated flexing due to vibration, bending, or the like.

The present invention is directed to a new and improved flexible hose assembly for transmitting pressurized air, gases and/or fluids between two spaced apart components. The hose assembly includes an inner liner surrounded by a helix formed of thermoplastic material having a substantially flat surface portion for bonding with the inner liner, eliminating the need for a outer cord to prevent the helix from floating relative to the liner. A self-adjusting retainer ring serves to compress the flexi...

A lining method for a host pipe (10) including lubrication of the host pipe prior to insertion of a thermoplastic liner (11) using tight fit techniques. After allowing the inserted liner to relax, the liner is partially pulled from within the host pipe using puller (20) and clamped with an internal clamp (30) to allow fitting of a special flange (40) to the liner (11) by butt fusion, for example. Threafter the liner is allowed to revert so as to abut a flange (12) fitted to the host pipe (10). T...

The tube closure comprises a cap and a nut which work in concert with each other to effectively seal a nipple at the end of a threaded tube or pipe and which facilitate removal of the cap. The cap has a flared end portion, a narrowed neck portion, a head portion, and an inner cylindrical sealing surface which engages the nipple. The cap is removably engaged within the nut with the nut at the neck portion, and is sealingly engaged on a cylindrical surface of the nipple. The cap may be removed fro...

A tube and end plug assembly include a tube having an inner diameter and an outer diameter; an end plug having a tapered body portion with minimum and maximum diameters and a radial flange adjacent the minimum diameter. The tapered body portion is located within an end portion of the tube which is in substantially continuous engagement with the tapered body portion of the plug. A related process of joining an end plug to a hollow tube having a cylindrical end portion, with inside and outside dia...

An injection-moulded polypropylene dust shield tube (stone guard) which can be mounted with a snap-on fit on a flange member carried by a piston rod of a telescopic shock absorber, primarily for use in a motor vehicle, comprises a hollow cylindrical body portion formed adjacent one end with two axially spaced rings of circumferentially equi-spaced internal projections forming internal castellations, arranged with the castellations of the two rings in alternating sequence, and with circumferentia...

Stiffener comprising an elastic member made of elastomer which surrounds a elongate body to be stiffened, the elastic member being integrally attached to one end of a housing support. It comprises, inside the elastic material (4), a reinforcement (8) extending over a portion of the length of the elastic member (4) from the end, the reinforcement being integrally attached by fastening (7) to the housing support (2, 6).