An end termination assembly for a pipe liner includes a liner fitting and a clamping collar. The liner fitting has a nipple. The clamping collar can be disposed on the nipple to clamp the liner between the two components. A clamping surface of one or both of the nipple and clamping collar can be tapered to accommodate a range of liner wall thicknesses. The clamping collar can connect to the nipple without rotating. For example, a draw mechanism can draw the clamping collar along pipe liner to clamp the liner between collar and the nipple. The clamping collar and the nipple define an annular space in which a pipe liner can be clamped, and the radial thickness of the annular space is different at different positions of the collar.

A load bearing flexible conduit system (10) for use in a body of water and adapted for deployment from a reel (100) located on a water going vessel into the body of water is disclosed. The system comprises a number of lengths (12) of load bearing flexible conduit, each length of load bearing flexible conduit provided with an inner layer (44) having a throughbore and a load bearing outer layer (50). A joint (30) for connecting the lengths together has a body having a longitudinal axis and a throughbore and at least one flexible coupling to permit at least one of the said one ends of the respective first and second lengths of load bearing flexible conduit to move relative to the longitudinal axis of the joint. The lengths of load bearing flexible conduit are sufficiently flexible such that they are capable of being stored, prior to use, on a reel (100) and are further capable of being at least partially payed out from the reel into the body of water during use.

Spigot device including a spigot formed with exterior gripping teeth and sleeve device to telescope over the spigot. The sleeve device is formed with a radially inwardly opening, distally contracting conical bearing surface which mounts a radially inwardly contractible gripper ring device captive therein, and constructed to be driven radially inwardly by the bearing surface as the sleeve is drawn proximally on the spigot to grip a plastic pipe trapped in the annulus between the sleeve and spigot.

The steps of selecting a spigot device including a distally projecting spigot of a predetermined outside diameter. Selecting a sleeve device formed with a radially inwardly opening interior retainer collar with an interior distally extending and radially and inwardly sloped bearing surface defining a gripper ring cavity. Selecting a gripper ring device which is contractible radially inwardly and inserting in the cavity and retaining the gripper ring device in the cavity to cooperate with the outside diameter to form an annulus for receipt of the plastic pipe and causing the gripper ring device to grip the pipe.

A composite tapered tubular assembly includes a composite tapered tube extending between a first end and a second end and tapered so as to have a smaller radius R1 at the first end than a radius R2 at the second end. The assembly also includes a first internal annular wedge that is in contact with an inner surface of the tube at said first end and a first external annular wedge in contact with the outer surface of the tube at said first end. The assembly further includes a first nut provided at said first end that is configured to be connected to said first internal wedge and a second external annular wedge provided on an outer surface of the tube and a second internal annular wedge in contact with the inner surface of said composite tube at said second end, and a second nut connected to an internal surface.

Spigot device including a spigot formed with exterior gripping teeth and sleeve device to telescope over the spigot. The sleeve device is formed with a radially inwardly opening, distally contracting conical bearing surface which mounts a radially inwardly contractible gripper ring device captive therein, and constructed to be driven radially inwardly by the bearing surface as the sleeve is drawn proximally on the spigot to grip a plastic pipe trapped in the annulus between the sleeve and spigot. The method includes selecting a sleeve device to fit over a spigot and an interfitting retainer collar with an interior distally extending and radially and inwardly sloped bearing surface defining a gripper ring cavity. Selecting a gripper ring device which is contractible radially inwardly and inserting it in the cavity and retaining the gripper ring device to cooperate in forming an annulus for receipt of a plastic pipe and causing the gripper ring device to grip the pipe.

A winding assistance device for tubular members having a first cuff including an elongate body defining a first cuff longitudinal axis, the elongate body of the first cuff having a C-shaped transverse cross-sectional profile defining a radially facing opening, where the opening of the first cuff defines a first cuff entry axis extending orthogonally from the first cuff longitudinal axis and bisecting a width of the opening of the first cuff; and a second cuff including an elongate body defining a second cuff longitudinal axis, the elongate body of the second cuff having a C-shaped transverse cross-sectional profile defining a radially facing opening therealong. The opening of the second cuff defines a second cuff entry axis extending orthogonally from the second cuff longitudinal axis and bisecting a width of the opening of the second cuff. The first cuff and the second cuff are secured to each other.

A load bearing flexible conduit system (10) for use in a body of water and adapted for deployment from a reel (100) located on a water going vessel into the body of water is disclosed. The system comprises a number of lengths (12) of load bearing flexible conduit, each length of load bearing flexible conduit provided with an inner layer (44) having a throughbore and a load bearing outer layer (50). A joint (30) for connecting the lengths together has a body having a longitudinal axis and a throughbore and at least one flexible coupling to permit at least one of the said one ends of the respective first and second lengths of load bearing flexible conduit to move relative to the longitudinal axis of the joint. The lengths of load bearing flexible conduit are sufficiently flexible such that they are capable of being stored, prior to use, on a reel (100) and are further capable of being at least partially payed out from the reel into the body of water during use.

A fitting for a pipe has a cylindrical sleeve and a spigot fitted concentrically within the sleeve. The sleeve is slidable along the spigot in a proximal direction. The sleeve has a gripper ring cavity with a conical bearing surface with a diameter that is smaller at the distal end and a larger at the proximal end. One or more gripper rings fit within the cavity and slidingly engage the bearing surface. The spigot has an outer surface sized to fit within a proximal end of the pipe. The inner surface of the gripper rings and the outer surface of the spigot define an annular space with a first radial width sized to accept insertion of the proximal end of the pipe. When the sleeve is moved with respect to the spigot in the proximal direction toward a sealed position, the rings are inwardly compressed by the bearing surface to grip an outer surface of the pipe. The end of the pipe is drawn into a space between the sleeve and the spigot with radial width smaller than the first radial width.

A connection end-piece of a flexible pipe includes an end vault extending along a central axis; an outer cover fixed to the end vault and defining, with the end vault, a reception chamber for receiving an end section of the armor elements of the flexible pipe; at least one annular member applied externally to the armor elements of the flexible pipe, the annular member being at least partially accommodated in the reception chamber between the armor elements and the outer cover. The annular member applies a radial tightening pressure higher than 100 bars onto the armor elements toward the central axis of the flexible pipe.

A quick coupling for a flexible tube has an outer annular element with a bayonet connection and a central bore which receives an annular insert having two arcuate sections and holding the flexible tube in place through barbs. The inserts are removable from the outer annular coupling by means of a detent at which point the arcuate sections may be easily removed from the flexible tube.