Abstract: A fuel filter device includes a bag-shape filter body and a space forming member disposed in the filter body. The filter body includes an upper surface part, and a lower surface part welded with the upper surface part at edges to form a bag shape. At least the lower surface part has a woven mesh outer layer part, a first inner layer part situated adjacent to the outer layer part and formed of a melt blown non-woven cloth, and a second inner layer part situated adjacent to the first inner layer part at a side opposite to the outer layer part. The second inner layer part is formed of a spun-bonded non-woven cloth. The upper surface part and the lower surface part are all made of polypropylene that is not soaked and swollen with fuel to thereby maintain a mesh size of the filter body without change.

Abstract: A fuel-filtering device includes a filter body having a bag shape and a communication hole, and is formed of a plurality of laminated filter layers bonded at rim portions by welding. The laminated filter layers include an outside filter layer formed of a woven mesh, an inside filter layer formed of a non-woven fabric, and at least one intermediate filter layer disposed between the outside filter layer and the inside filter layer and formed of a non-woven fabric. The inside filter layer has an average aperture diameter larger than that of the intermediate filter layers. The filter body is formed of at least one of a polyethylene fiber and a polypropylene fiber. The inside filter layer protects the intermediate filter layer and enhances a weld strength at the rim portions.

Abstract: A fuel-filtering device is disposed inside a fuel tank for filtering a fuel. The fuel-filtering device includes a filter body having a bag shape and a communication hole, and is formed of a plurality of laminated filter layers. The laminated filter layers includes an outside filter layer formed of a woven mesh, an inside filter layer formed of a non-woven fabric, and at least one intermediate filter layer disposed between the outside filter layer and the inside filter layer and formed of a non-woven fabric. The filter body is formed of at least one of a polyethylene fiber and a polypropylene fiber and has mesh sizes decreasing from the outside filter layer toward the inside filter layer.

Abstract: A fuel valve includes an upper chamber communicating with a ventilation passage of a canister; a lower chamber to be disposed inside a fuel tank; a communicating port between the upper chamber and the lower chamber; and a float member disposed in the lower chamber for blocking the communicating port when fuel flows into the lower chamber. A bottom orifice or a one-way valve is formed in the bottom of the lower chamber for preventing the fuel to flow into the lower chamber and allowing the fuel to flow out from the bottom of the lower chamber. A fuel inlet is formed at a lower side of the side wall to face upwardly to allow the fuel to gradually enter the lower chamber so that an inner pressure in the fuel tank increases by entering the fuel into the lower chamber after the fuel reaches the fuel inlet.

Abstract: A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, or a blended polymer of polyamide and high-density polyethylene.

Abstract: A fuel valve includes an upper chamber communicating with a ventilation passage of a canister; a lower chamber to be disposed inside a fuel tank; a communicating port between the upper chamber and the lower chamber; and a float member disposed in the lower chamber for blocking the communicating port when fuel flows into the lower chamber. A bottom orifice or a one-way valve is formed in the bottom of the lower chamber for preventing the fuel to flow into the lower chamber and allowing the fuel to flow out from the bottom of the lower chamber. A fuel inlet is formed at a lower side of the side wall to face upwardly to allow the fuel to gradually enter the lower chamber so that an inner pressure in the fuel tank increases by entering the fuel into the lower chamber after the fuel reaches the fuel inlet.

Abstract: A fuel valve includes an upper chamber communicating with a ventilation passage of a canister; a lower chamber to be disposed inside a fuel tank; a communicating port between the upper chamber and the lower chamber; and a float member disposed in the lower chamber for blocking the communicating port when fuel flows into the lower chamber. The lower chamber includes a one-way valve formed at a bottom thereof for allowing the fuel to flow out only through the one-way valve, and a fuel inlet formed in a side wall of the lower chamber. When a fuel level inside the fuel tank reaches the main fuel inlet, the fuel flows into the lower chamber to raise the float member. As a result, an internal pressure of the fuel tank increases, so that a sensor at a fueling nozzle side can detect that the fuel tank is filled-up.

Abstract: A fuel-filtering device is disposed inside a fuel tank for filtering a fuel. The fuel-filtering device includes a filter body having a bag shape and a communication hole, and is formed of a plurality of laminated filter layers. The laminated filter layers includes an outside filter layer formed of a woven mesh, an inside filter layer formed of a non-woven fabric, and at least one intermediate filter layer disposed between the outside filter layer and the inside filter layer and formed of a non-woven fabric. The filter body is formed of at least one of a polyethylene fiber and a polypropylene fiber and has mesh sizes decreasing from the outside filter layer toward the inside filter layer.

Abstract: A fuel filter device includes a bag-shape filter body having an upper surface part and a lower surface part, and a space forming member disposed in the filter body for maintaining the filter body in an expanded bag-shape. At least the lower surface part has an outer layer part formed of a woven mesh and an inner layer part formed of a non-woven cloth made of an olefin resin including polyethylene and polypropylene. The fuel filter device is to be attached to a fuel intake port in a fuel tank, so that an inside of the filter body communicates with the fuel intake port.

Abstract: A fuel-filtering device includes a filter body in a bag form and a spacing member arranged in the filter body to maintain the bag form. The filtering device is attached to a fuel suction port located inside a fuel tank such that an inner space of the filter body communicates with the fuel suction port. The filter body is formed of at least two laminated filter layers, which includes an outside filter layer formed of a woven mesh and an inside filter layer formed of a non-woven fabric. Alternatively, the filter body includes an upper surface section and a lower surface section, and at least the lower surface section of the filter body has an inner layer formed of a mesh and an outer layer formed of a non-woven fabric.

Abstract: A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, a blended polymer of polyamide and high-density polyethylene.

Abstract: A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, or a blended polymer of polyamide and high-density polyethylene.

Abstract: A fuel valve includes an upper chamber communicating with a ventilation passage of a canister; a lower chamber to be disposed inside a fuel tank; a communicating port between the upper chamber and the lower chamber; and a float member disposed in the lower chamber for blocking the communicating port when fuel flows into the lower chamber. The lower chamber includes a one-way valve formed at a bottom thereof for allowing the fuel to flow out only through the one-way valve, and a fuel inlet formed in a side wall of the lower chamber. When a fuel level inside the fuel tank reaches the main fuel inlet, the fuel flows into the lower chamber to raise the float member. As a result, an internal pressure of the fuel tank increases, so that a sensor at a fueling nozzle side can detect that the fuel tank is filled-up.

Abstract: A rotary damper includes a housing having an annular groove with an inlet portion, and a rotor having a main annular portion to be inserted into the annular groove and a cap portion attached at one side of the main annular portion. The main annular portion is inserted into the annular groove to form a space therein so that the cap portion closes the annular groove. A plurality of sealing members is situated on inner and outer sides of the main annular portion for sealing the space, and a viscous fluid is filled in the space. An engaging shoulder portion is provided on one of the housing and rotor, and an engaging portion is provided on the other of the housing and rotor for engaging said engaging shoulder portion.

Abstract: A fuel-filtering device includes a filter body in a bag form and a spacing member arranged in the filter body to maintain the bag form. The filtering device is attached to a fuel suction port located inside a fuel tank such that an inner space of the filter body communicates with the fuel suction port. The filter body is formed of at least two laminated filter layers, which includes an outside filter layer formed of a woven mesh and an inside filter layer formed of a non-woven fabric. Alternatively, the filter body includes an upper surface section and a lower surface section, and at least the lower surface section of the filter body has an inner layer formed of a mesh and an outer layer formed of a non-woven fabric.

Abstract: A rotary damper includes a housing having an annular groove with an inlet portion, and a rotor having a main annular portion to be inserted into the annular groove and a cap portion attached at one side of the main annular portion. The main annular portion is inserted into the annular groove to form a space therein so that the cap portion closes the annular groove. A plurality of sealing members is situated on inner and outer sides of the main annular portion for sealing the space, and a viscous fluid is filled in the space. An engaging shoulder portion is provided on one of the housing and rotor, and an engaging portion is provided on the other of the housing and rotor for engaging said engaging shoulder portion.

Abstract: A fuel tank connector A for connecting a fuel tank B and a pipe C in communicating fashion includes a gas barrier member 10 made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion 11 and a flanged portion 12 provided on a peripheral side of the tubular portion 11 and having a greater side than an opening Ba of the fuel tank B. The gas barrier member 10 is made of polybutylene terephthalate, polyphenylene sulfide, a liquid crystal polymer, aliphatic polyketone, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, a blended polymer of polyamide and high-density polyethylene, or polyethylene terephthalate.

Abstract: A tube to be connected to a pipe is formed of a base portion, a wide portion and a narrow portion integrally molded together. The wide portion has an inner end extending to the base portion, and an opening formed at a side opposite to the inner end. An inner diameter of the wide portion is greater than that of the base portion. When the pipe is inserted, the base portion receives an insertion portion of the pipe, while the wide portion receives a projecting portion of the pipe therein. The narrow portion deformably projects inwardly from an inner circumference of the wide portion at a position away from the inner end. The narrower portion allows the projecting portion to pass therethrough in a pipe inserting direction by deformation thereof, and prevents the projecting portion from passing therethrough in a pipe removing direction opposite to the pipe inserting direction.

Abstract: A fuel outflow preventing valve device of the invention is formed of a housing, a plurality of valves, and a plurality of energizing members. The housing has a flow path, a plurality of orifices communicating with the flow path, a plurality of cavities, and a plurality of openings communicating with the cavities. Each cavity communicates with each orifice. Each valve is situated in each cavity and moves to open or close the corresponding orifice. Each energizing member is situated in each cavity to support each valve and has strength such that each energizing member can not move the valve toward the orifice to close the orifice by its own force, but each energizing member can move the valve toward the orifice to close the orifice when fluid enters into the cavity to provide buoyancy to the valve. Therefore, the fuel outflow preventing valve device has a simple structure, and each valve is prevented from being stuck to a valve seat.