Abstract: A fuel shutoff valve includes a valve, a float, and an auxiliary member. The valve is configured to open or close an air passage of a fuel tank. The float floats on fuel and moves in a valve closing direction to close the valve, or in a valve opening direction opposite to the valve closing direction to open the valve. The auxiliary member has a predetermined weight, and abuts on the float to apply a weight on the float in the valve opening direction, or separating from the float not to apply the weight on the float in the valve closing direction.

Abstract: A vent control valve for a fuel tank controls a ventilation between a fuel tank and an outside, and includes: an annular valve seat defined in a case; a movable valve object which is movable relative to the valve seat; a seal component having an annular plate shape and held by the movable valve object to be seated on or separated from the valve seat to open and close a passage for ventilation; and an annular ridge part defined in the movable valve object or the seal component such that the movable valve object and the seal component are in contact with each other on an annular seal line.

Abstract: A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.

Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.

Abstract: A vent control valve for a fuel tank controls a ventilation between a fuel tank and an outside. The vent control valve includes: a case having a tube shape that forms a passage for ventilation; a movable valve object arranged in the case to be movable in an axial direction of the case to open and close the passage; and a baffle component disposed between the case and the movable valve object and located on an outer side of the movable valve object in a radial direction. An outer passage is defined between the case and the baffle component, and the baffle component restricts a contact between a fluid flowing through the outer passage and the movable valve object.

Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.

Abstract: The fuel supply device has a module installed in a fuel tank. The module has a cap and a support pillar arranged between the cap and a bottom of the fuel tank. The cap is supporting a valve relevant to ventilation of the fuel tank. The valve is supported by a base portion. The base portion and a large diameter part are connected by snap-fit mechanisms. The valve and the base portion are connected by snap-fit mechanisms. A hook part is arranged in an engaging window. It is possible to inspect the valve through the engaging window.

Abstract: A surface-treating composition including a fluorine-containing polymer which is able to form a layer having both high surface slip property and high friction durability. The surface-treating composition includes a first compound (a reactive fluorine-containing polymer which is a fluorine-containing silane polymer) and a second compound (a non-reactive fluorine-containing polymer which is a fluorine-containing oil), and the proportion of the first compound is 15 to 70% by mass with respect to the total mass of the first compound and the second compound.

Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case integrally includes, offset to a specific location of a circumferential direction, a fuel passage that allows fuel to flow downstream from the fuel filter, a discharge passage that discharges flowing fuel in the fuel passage toward the internal combustion engine, and a plurality of opening and closing valves that open and close the fuel passage.

Abstract: A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.

Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a fuel passage formed downstream of the fuel filter, the fuel passage being in communication with outside of the filter case, and a partition wall that partitions the fuel passage to give the fuel passage a shape which is turned back in an axial direction of the filter case.

Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.

Abstract: The fuel supply device has a module installed in a fuel tank. The module has a cap and a support pillar arranged between the cap and a bottom of the fuel tank. The cap is supporting a valve relevant to ventilation of the fuel tank. The valve is supported by a base portion. The base portion and a large diameter part are connected by snap-fit mechanisms. The valve and the base portion are connected by snap-fit mechanisms. A hook part is arranged in an engaging window. It is possible to inspect the valve through the engaging window.

Abstract: A perfluoro(poly)ether group containing silane compound represented by the formula (1a) or the formula (1b): A-Rf—X—SiQkY3-k??(1a) Y3-kQkSi—X—Rf—X—SiQkY3-k??(1b) as defined herein. Also disclosed is a process for producing the compound, a surface-treating agent containing the compound, a pellet containing the surface-treating agent and an optical member including a base material and a layer formed on a surface of the base material from the compound.

Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.

Abstract: A surface-treating composition including a fluorine-containing polymer which is able to form a layer having both high surface slip property and high friction durability. The surface-treating composition includes a first compound (a reactive fluorine-containing polymer which is a fluorine-containing silane polymer) and a second compound (a non-reactive fluorine-containing polymer which is a fluorine-containing oil), and the proportion of the first compound is 15 to 70% by mass with respect to the total mass of the first compound and the second compound.

Abstract: The present invention provides a novel perfluoropolyether group containing silane compound wherein the compound is represented by any one of the following general formulae (1a), (1b) (2a) and (2b), has a number average molecular weight of 6×103 to 1×105 and can form a layer having water-repellency, oil-repellency, antifouling repellency and high friction durability.

Abstract: The invention provides a compound which is useful in production of a fluoropolymer and easy to be removed from the produced fluoropolymer, a method of producing the compound, and a method of producing a fluoropolymer using the compound. The invention provides a compound which is represented by Rf1—CH2O—CF2—CHF—Rf2—X, wherein Rf1 represents a fluoroalkyl group containing 1 to 5 carbon atoms, Rf2 represents a fluoroalkylene group containing 1 to 3 carbon atoms, X represents —COOM or —SO3M, and M represents one of H, K, Na, and NH4.

Abstract: The present invention provides a process for preparing a fluorine-containing propene represented by the chemical formula CF3CF?CX1X2, wherein X1 is a hydrogen atom or chlorine atom, and X2 is a fluorine atom, chlorine atom, or hydrogen atom, by reacting a halogenated propene represented by the chemical formula CCIYZCF?CX1X2, wherein X1 and X2 are the same as above, and Y and Z may be the same or different and individually indicate a fluorine atom or chlorine atom, with anhydrous hydrogen fluoride in a gas phase in the presence of a chromium oxide or a fluorinated chromium oxide as a fluorination catalyst. The process of the present invention provides a fluorine-containing propene represented by the chemical formula CF3CF?CClX, wherein X is Cl, H or F, under relatively mild conditions at a high yield.

Abstract: The invention provides a compound which is useful in production of a fluoropolymer and easy to be removed from the produced fluoropolymer, a method of producing the compound, and a method of producing a fluoropolymer using the compound. The invention provides a compound which is represented by Rf1—CH2O—CF2—CHF—Rf2—X, wherein Rf1 represents a fluoroalkyl group containing 1 to 5 carbon atoms, Rf2 represents a fluoroalkylene group containing 1 to 3 carbon atoms, X represents —COOM or —SO3M, and M represents one of H, K, Na, and NH4.