Abstract: A multilayer tube comprises at least the following three layers: an inner layer contactable with a fuel component, a barrier layer preventing the fuel component permeating, and an outermost layer. In the multilayer tube, the inner layer comprises a poly(butylene terephthalate) resin composition containing at least (A) a poly(butylene terephthalate) resin, the barrier layer comprises a polyester resin composition, and the outermost layer comprises a poly(butylene terephthalate) resin composition containing (A) a poly(butylene terephthalate) resin, (B) an elastomer component, (C) an aromatic polycarbodiimide compound, and (D) an antioxidant.

Abstract: A fuel hose includes a tube-shaped inner layer made of a resin composition (A) that contains an aromatic polyamide resin as a main component and an organic acid salt having 8 to 28 carbon atoms and an outer layer formed on an outer peripheral surface of the inner layer and made of a resin composition (B) that contains an aliphatic polyamide resin as a main component, wherein the inner layer and the outer layer are bonded to each other through interlayer adhesion.

Abstract: A fuel hose includes a tube-shaped inner layer made of a resin composition (A) containing an aromatic polyamide resin as a main component and an outer layer formed on an outer peripheral surface of the inner layer and made of a resin composition (B) containing at least one of a polyolefin-based resin and an aliphatic polyamide resin as a main component, wherein the following requirement (?) or (?) is satisfied: (?) the resin composition (B) contains at least one of acid-modified SEBS and acid-modified PMMA-PBA-PMMA; and (?) the resin composition (A) contains at least one of acid-modified SEBS and acid-modified PMMA-PBA-PMMA and the resin composition (B) contains amine-modified SEBS.

Abstract: A multilayer tube comprises at least the following three layers: an inner layer contactable with a fuel component, a barrier layer preventing the fuel component permeating, and an outermost layer. In the multilayer tube, the inner layer comprises a poly(butylene terephthalate) resin composition containing at least (A) a poly(butylene terephthalate) resin, the barrier layer comprises a polyester resin composition, and the outermost layer comprises a poly(butylene terephthalate) resin composition containing (A) a poly(butylene terephthalate) resin, (B) an elastomer component, (C) an aromatic polycarbodiimide compound, and (D) an antioxidant.

Abstract: A fuel hose which is less permeable to automotive fuels and excellent in low temperature property, hydrolysis resistance, weather resistance and ozone resistance.

Abstract: The connector clip for verifying complete connection integrally includes a clip body of U-shape in cross-section to receive a tubular holding portion and a connection verifying portion of U-shape in cross-section to receive an opposite axial side of an annular verification projection with respect to the pipe. The connection verifying portion has a verifying body and a snap-fit portion. The clip body and the verifying body are connected via a connection part, while the verifying body and the snap-fit portion are connected via a joint part. Reinforcement ribs are formed along an entire circumference of outer surface of the verifying body.

Abstract: The connector clip for verifying complete connection includes a connection verifying portion, more specifically, a pair of restraining portions having an assistance structure to certainly detect incomplete connection between the connector and the pipe. The assistance structure may be constructed so as to remove a sealing property between the connector and the pipe in incomplete connection relation with one another.

Abstract: The connector clip for verifying complete connection includes a connection verifying portion, more specifically, a pair of restraining portions having an assistance structure to certainly detect incomplete connection between the connector and the pipe. The assistance structure may be constructed so as to remove a sealing property between the connector and the pipe in incomplete connection relation with one another.

Abstract: The connector clip for verifying complete connection integrally includes a clip body of U-shape in cross-section to receive a tubular holding portion and a connection verifying portion of U-shape in cross-section to receive an opposite axial side of an annular verification projection with respect to the pipe. The connection verifying portion has a verifying body and a snap-fit portion. The clip body and the verifying body are connected via a connection part, while the verifying body and the snap-fit portion are connected via a joint part. Reinforcement ribs are formed along an entire circumference of outer surface of the verifying body.

Abstract: A connector cover for providing a water shield between a connector and a pipe comprises two cover elements. The cover elements are joined each other to construct a tubular water shield, which internally has a connector receiving portion on one axial side thereof for receiving a pipe inserting portion of a connector, and a pipe receiving portion on an opposite axial side thereof for receiving a pipe. The pipe receiving portion has a pipe receiving section on an opposite axial side thereof for receiving an opposite axial side from an annular projection of the pipe, and a projection receiving section on one axial side thereof for receiving annular projection. An inner diameter of the pipe receiving section is designed generally identical to an outer diameter of the pipe.

Abstract: An automotive in-tank fuel hose which has excellent flexibility and is highly resistant to sour gasoline and to hydrolysis. The automotive in-tank fuel hose for installation in a fuel tank comprises a single layer structure formed by at least one of (A) a thermoplastic polybutylene terephthalate elastomer containing a dimer acid moiety and (B) a thermoplastic polybutylene naphthalate elastomer containing a dimer acid moiety. The automotive in-tank fuel hose follows a deformation of the fuel tank and absorbs vibration caused by a fuel pump.

Abstract: A connector cover for providing a water shield between a connector and a pipe comprises two cover elements. The cover elements are joined each other to construct a tubular water shield, which internally has a connector receiving portion on one axial side thereof for receiving a pipe inserting portion of a connector, and a pipe receiving portion on an opposite axial side thereof for receiving a pipe. The pipe receiving portion has a pipe receiving section on an opposite axial side thereof for receiving an opposite axial side from an annular projection of the pipe, and a projection receiving section on one axial side thereof for receiving annular projection. An inner diameter of the pipe receiving section is designed generally identical to an outer diameter of the pipe.

Abstract: A connecting structure including a press-fitting body 341 of a press-fitting member 34 is press-fitted into one end of a resin tube 1 to thereby form a diameter-enlarged end portion 1a at one end of the resin tube 1 and fixedly engage an axially-inner end portion of the diameter-enlarged end portion with inner circumferential surface of a base portion 271 of a connection member 27. A sealing member 71 is fitted into an annular outer circumferential groove formed in the outer circumference of the diameter-enlarged end portion. An end portion 551 of a mating member 55 is fitted onto or inserted into the diameter-enlarged end portion, so that the end portion 551 engages the outer circumference of the sealing member in a fluid-tight condition. Upon insertion or fitting of the end portion of the mating member, a second engagement portion 552 projecting radially outward from the outer circumferential surface of the end portion 551 of the mating member 55 engages arm portions 272 of the connection member.

Abstract: A tube connecting structure for connecting a resin tube and a tubular mating member. The structure includes an engagement member having a cylindrical base that is attached onto the outer peripheral surface of an end portion of the resin tube and is fixed to the resin tube by a cylindrical press-fitted member. The cylindrical press-fitted member is press-fitted into the inner peripheral surface of the end portion, thereby expanding the diameter of the end portion of the resin tube and fixing the cylindrical base to the resin tube. The engagement member has a plurality of arm portions radially extending from the cylindrical base. First engagement portions, in the form of ratchets, are provided to protrude from tip end portions of the arm portions, such that the first engagement portions can be snap-engaged with a second engagement portion on the tubular mating member. The tubular mating member and the resin tube are directly connected to each other with a ring-shaped elastic seal member positioned therebetween.