An internal tube for tanks, particularly fuel tanks of automobiles, wherein the tube has a fluid channel and a tube wall that encloses the fluid channel, wherein the tube wall has a multilayer design and is composed of at least three layers, with one inner layer based on at least one polyolefin being provided, with at least one central layer based on at least one polyamide being present, and with one outer layer based on at least one polyolefin being provided.

A conduit for routing connectivity cables. The conduit including a bottom including consecutively connected bottom members extending a longitudinal length of the conduit. A first side and a second side are connected to the bottom. The first side including consecutively connected first side members extending the longitudinal length and the second side including consecutively connected second side members extending the longitudinal length. The bottom, the first side, and the second side extend along a center axis of the conduit, the center axis extending the longitudinal length of the conduit.

A conduit for routing connectivity cables. The conduit including a bottom including consecutively connected bottom members extending a longitudinal length of the conduit. A first side and a second side are connected to the bottom. The first side including consecutively connected first side members extending the longitudinal length and the second side including consecutively connected second side members extending the longitudinal length. The bottom, the first side, and the second side extend along a center axis of the conduit, the center axis extending the longitudinal length of the conduit.

A collapsible conduit includes an elongated sheet configured as a coil, the coil having a longitudinal axis, the elongated sheet having a first edge that includes a first hem and a second edge opposite the first edge and that includes a second hem, each hem including an overlapping portion that overlaps with the overlapping portion of the other hem, the first hem interlocked with the second hem to form an interlocking arrangement between the first and second edges, wherein the conduit is collapsible along the longitudinal axis between fully extended and collapsed positions, and wherein the overlapping portion of the each hem has an arcuate cross-section shape when the conduit is in both the fully extended and collapsed positions.

A fluid tube is disclosed herein. The breathing circuit tube has a wall which comprises a hollow geometry. The wall defines a passageway with a central longitudinal axis therethrough. The wall is expandable and contractible to adjust a diameter and a length of the passageway. The wall includes a partition and one or more corrugations that expand and contract to adjust the diameter and length of the passageway. The corrugations extend between terminal end portions of the wall.

A fluid tube is disclosed herein. The breathing circuit tube has a wall which comprises a hollow geometry. The wall defines a passageway with a central longitudinal axis therethrough. The wall is expandable and contractible to adjust a diameter and a length of the passageway. The wall includes a partition and one or more corrugations that expand and contract to adjust the diameter and length of the passageway. The corrugations extend between terminal end portions of the wall.

The present disclosure provides a leak-proof hose for transportation of fluids therein. The hose comprises an elastic tube with a first end portion and a second end portion. The hose also comprises an extensible cylindrical housing with a first end and a second end, and arranged to substantially accommodate a length of the elastic tube co-axially inside thereof. The hose further comprises a coupling member positioned at the first end of the extensible cylindrical housing. The coupling member have external threads adapted to allow removably attaching of an attachment device therewith. In the present hose, at least the first end portion of the elastic tube is extending outside of the first end of the extensible cylindrical housing and is folded over the coupling member.

The present disclosure provides a leak-proof hose for transportation of fluids therein. The hose comprises an elastic tube with a first end portion and a second end portion. The hose also comprises an extensible cylindrical housing with a first end and a second end, and arranged to substantially accommodate a length of the elastic tube co-axially inside thereof. The hose further comprises a coupling member positioned at the first end of the extensible cylindrical housing. The coupling member have external threads adapted to allow removably attaching of an attachment device therewith. In the present hose, at least the first end portion of the elastic tube is extending outside of the first end of the extensible cylindrical housing and is folded over the coupling member.

A hose arrangement includes an outer tube of flexible material and an inner tube of an elastic material for carrying fluid. Due to an action of the elastic inner tube, the hose has a shorter length in a contracted state in the absence of fluid pressure in the interior of the inner elastic tube and a longer length in an expanded state when the fluid pressure is applied to the interior of the elastic inner tube. The tube has an undulating state in the contracted state and controls and contains expansion of the inner tube when the hose is in the expanded state. At least one sleeve portion is provided between the elastic inner tube and the outer tube along a part of the elastic inner tube where undulation of the outer tube occurs in the contracted state for protecting the elastic inner tube from abrasion undulations of the outer tube.

A magnetically positioned and engaged clothes dryer vent coupling (14, 30), having magnetic material (12, 36) arranged around the opening of a tube (22, 32) such that as the two halves of the coupling are brought into proximity, the magnetic forces minimizing repulsion and maximizing attraction align the two duct paths and bring the magnets together, forming a seal. The short length of flexible tubing (20) allows freedom of motion of the magnetic end during engagement and provides the necessary flexibility required to maintain a seal through dryer operational movement. The advantages of such a coupling are: simplified and faster dryer installation; elimination of the long length of flexible duct typically used in dry installations; shorter, more easily maintainable dryer exhaust duct path; increased dryer efficiency and increased fire safety.