A selectively flexible extension tool includes: a line assembly comprising a first line and a second line; and a plurality of sequentially arranged links, the line assembly operable with the plurality of sequentially arranged links to move the plurality of sequentially arranged links between a slacked position and a tensioned position, the plurality of sequentially arranged links together comprising a first line guide and a second line guide, the first line of the line assembly extending through the first line guide and the second line of the line assembly extending through the second line guide; wherein the first line defines a first displacement when the plurality of sequentially arranged links are moved from the slacked position to the tensioned position, wherein the second line defines a second displacement when the plurality of sequentially arranged links are moved from the slacked position to the tensioned position, and wherein the first displacement is substantially equal to the second displacement.

A water delivery device includes a first conduit section and a second conduit section rotatably coupled to the first conduit section by a magnetic joint. The magnetic joint includes a plurality of magnets that cooperatively define a plurality of rotational positions between the first conduit 5 section and the second conduit section.

A tubing structure includes a first unit, a second unit movably connected to the first unit, and a controller. The first unit includes a first body and at least one first magnetic component disposed inside the first body. The second unit includes a second body movably engaging with the first body and at least one second magnetic component disposed inside the second body and located at a position corresponding to the at least one first magnetic component. The controller is electrically connected to at least one of the at least one first magnetic component and the at least one second magnetic component. The controller selectively controls the at least one first magnetic component and the at least one second magnetic component to magnetically attract or repulse each other to drive the second body to move relative to the first body for inclining the second unit relative to the first unit.

A snout apparatus for guiding high pressure flexible lances between a lance drive apparatus and a flexible lance positioner apparatus includes one of a male tubular connector and a female tubular connector fitting adapted to fasten to a flexible lance drive apparatus, another one of a male and a female tubular connector fitting adapted to fasten to a flexible lance positioner, and a plurality of segments connected together in series so as to connect in series between the one and another connector fittings. Each segment may include a cylindrical tube portion sized to receive and pass therethrough flexible lances and a tubular collar portion connected to the tube portion. The collar portion has peripheral arcuate closed slots adjacent to and spaced around a distal end of the collar portion. Shoulder bolt fasteners are each fastened to a next segment tube portion and extend through one of the closed slots.

A snout apparatus for guiding high pressure flexible lances between a lance drive apparatus and a flexible lance positioner apparatus includes one of a male tubular connector and a female tubular connector fitting adapted to fasten to a flexible lance drive apparatus, another one of a male and a female tubular connector fitting adapted to fasten to a flexible lance positioner, and a plurality of segments connected together in series so as to connect in series between the one and another connector fittings. Each segment may include a cylindrical tube portion sized to receive and pass therethrough flexible lances and a tubular collar portion connected to the tube portion. The collar portion has peripheral arcuate closed slots adjacent to and spaced around a distal end of the collar portion. Shoulder bolt fasteners are each fastened to a next segment tube portion and extend through one of the closed slots.

A linking pin made of elastic plastic having linking pin halves is used to link segments in the longitudinal direction to assemble a rehabilitation pipe. The linking pin includes a tubular portion having on its outer periphery surface first and second protrusions separated by a distance of twice the thickness of the side plate of the segment and a rear protruding portion that enlarges in diameter due to elasticity. The linking pin is inserted into one segment and the other segment so that the side plates of both the segments come between the first and second protrusions. The linking pin is then enlarged in diameter due to elasticity to fit the side plates between the first and second protrusions and link both the segments in the longitudinal direction. The linking pin that is enlarged in diameter can be reduced in diameter to unlink both the segments.

A nonmetallic flexible pipe and a manufacturing method thereof. The nonmetallic flexible pipe comprises, from the inside to the outside, an inner liner, a pressure bearing layer, an isolation layer, a tensile layer, a functional layer, and a protective layer, wherein two adjacent layers are non-rigidly bonded. The inner liner layer is made from a thermoplastic polymer. The pressure bearing layer is made from a fiber-reinforced resin-based composite material. The isolation layer is made from a thermoplastic polymer. The tensile layer is made from a resin-reinforced fiber material. At least one of an optical fiber, a cable, a tracing ribbon, a pipe for conveying a heat transfer medium, a pressure sensor, and a temperature sensor is provided in the functional layer. The protective layer is made from a thermoplastic polymer.

An articulating arrangement for a pipe includes a narrow section having a diameter D.sub.1 smaller than a diameter D.sub.2; a plurality of slits arranged on the narrow section in a spaced apart manner along a central axis of the pipe, each of the plurality of slits including two or more slit sections separated by two or more bridge sections. The plurality of slits includes a set of first slits and a set of second slits angularly arranged, with respect to the set of first slits, along the central axis. The set of first slits is arranged on a first half of the narrow section and the set of second slits is arranged on a second half of the narrow section. A cover member is arranged on the narrow section to seal the plurality of slits. The cover member diametrically aligns with the diameter D.sub.2.

An articulating arrangement for a pipe includes a narrow section having a diameter D.sub.1 smaller than a diameter D.sub.2; a plurality of slits arranged on the narrow section in a spaced apart manner along a central axis of the pipe, each of the plurality of slits including two or more slit sections separated by two or more bridge sections. The plurality of slits includes a set of first slits and a set of second slits angularly arranged, with respect to the set of first slits, along the central axis. The set of first slits is arranged on a first half of the narrow section and the set of second slits is arranged on a second half of the narrow section. A cover member is arranged on the narrow section to seal the plurality of slits. The cover member diametrically aligns with the diameter D.sub.2.

This invention is directed to a flexible device having a longitudinal axis, a first elongate member configured to move the flexible device in a first direction relative to the longitudinal axis, and a second elongate member configured to move the flexible device in a second direction relative to the longitudinal axis that is different to the first direction. The flexible device can also have an articulation section including a plurality of articulation links, wherein at least one of the plurality of articulation links can include a body configured to receive the first elongate member and the second elongate member. The flexible device can also include a cinching element configured to engage the first elongate member to substantially limit movement between the plurality of articulation links when a tensile force is applied to the first elongate member and configured to disengage the first elongate member to permit movement between the plurality of articulation links when a tensile force is applied to the second elongate member.