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US 4,952,347 AGranted
Method of manufacturing a fuel tank from synthetic resin
AssigneeToyoda Gosei Co., Ltd.
InventorJoji Kasugai
Life of this patent
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AssigneeToyoda Gosei Co., Ltd.
InventorJoji Kasugai
Estimating the term…
A fuel tank of synthetic resin is provided with a holding plate of synthetic resin arranged within the tank, and an outside wall covering the holding plate and formed by blow molding. Parts such as a level gauge projecting from the outside wall and having a nipple portion are held to the holding plate. At the manufacturing state of the tank, parts are fixed to the holding plate, and in this state, a blow molding mold is set and the outside wall of the tank is formed by the blow molding. In this case, the outer periphery of the holding plate is fixed to the inner circumferential surface of the outside wall, and the inner circumferential surface of the outside wall is pressed to the outer circumferential surface of the nipple portion of the component part and the circumference of the nipple portion is sealed. And then the outside wall covering the top end surface of the nipple portion is cut thereby the tank is manufactured.
Method of manufacturing a fuel tank of synthetic resin which is provided with an insert member arranged within the tank, and with an outside tank wall covering said insert member and formed by blow molding using a parison of thermoplastic resin and a mold for blow molding to form a cavity of prescribed shape at a mold tightening state, said insert member being composed of a component part with a nipple portion projected from said outside tank wall and a holding plate of synthetic resin holding said component part and arranged in the horizontal direction, said method comprising the steps of:
Method of manufacturing a fuel tank of synthetic resin which is provided with an insert member arranged within the tank, and with an outside tank wall covering said insert member and formed by blow molding using a parison of thermoplastic resin and a mold for blow molding to form a cavity of a prescribed shape at a mold tightening state, said outside tank wall having an upper wall, a bottom wall and a side wall, said insert member being composed of a component part with a nipple portion projecting upward from the upper wall of said outside tank wall and a holding plate of synthetic resin holding said component part, said holding plate having a base portion of a flat plate shape including a through hole and arranged in a horizontal direction, and a pipe portion projecting upward from the base portion to the upper wall of said outside tank wall, said method comprising the steps of:
Method of manufacturing a fuel tank of synthetic resin which is provided with an upper chamber filled with activated carbon to adsorb fuel evaporation gas, a lower chamber for storing fuel, an insert member arranged within the tank, and a tank outside wall constructed of a circumferential wall of the upper chamber and the lower chamber said outside wall covering said insert member and formed by blow molding using a parison of thermoplastic resin and a mold for blow molding to form a cavity of prescribed shape at a mold tightening state, said outside wall having an upper wall with a nipple portion for fuel evaporation gas which projects upward, a bottom wall and a side wall, said insert member being composed of a component part with a nipple portion projecting from the lower chamber to upper side of the upper wall and a holding plate of synthetic resin holding said component part and acting as a partition wall between the upper chamber and the lower chamber, said holding plate having a base portion of a flat plate shape arranged in the horizontal direction and an upper pipe portion for fuel flow projecting to an upper side of the upper wall and penetrating it, and a lower pipe portion for fuel evaporation gas projecting from the base portion to a lower side of the bottom wall and penetrating it, said method comprising the steps of:
Dependencies are inferred from the claim text.