# US 9,751,397 B2 · Fueling filler neck device formed with a first resin layer that is stacked on a harder second resin layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,397 B2 - Document ID: US9751397B2 - Status: Granted - Kind: B2 - Application number: 14/721,115 - Filed: 2015-05-26 - Published: 2015-12-03 - Granted: 2017-09-05 - Earliest claimed: 2014-05-29 - Assignees: Toyoda Gosei Co., Ltd. - Applicants: Toyoda Gosei Co., Ltd. - Inventors: Hiroaki Kito; Yoshinari Hiramatsu - Web page: https://patentgrep.com/patent/US9751397B2 ## CPC - B60K 15/04: Tank inlets (B60K15/077 takes precedence) - B60K 2015/03467: {by clip or snap fit fittings} - B60K 2015/0429: {actuated by the nozzle} - B60K 2015/0461: {comprising a filler pipe shutter, e.g. trap, door or flap for fuel inlet} - B60K 2015/047: {Manufacturing of the fuel inlet or connecting elements to fuel inlet, e.g. pipes or venting tubes} - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES ## Abstract This fueling device comprises a filler neck formed by stacking a first resin layer made of a first resin and a second resin layer made of a second resin that is harder than the first resin, such that the second resin layer is provided on an inner side of the first resin layer; and a mounting member mounted to a fuel injection opening side of the filler neck from outside. The first resin layer has a higher impact resistance than the second resin layer. The second resin layer has a higher fuel permeation resistance than the first resin layer. The filler neck includes an engagement element that is provided on the fuel injection opening side of the filler neck and is extended radially outward from the second resin layer to pass through the first resin layer. The mounting member is engaged with the engagement element to be mounted to the filler neck. ## Claims ### Claim 1 A fueling device in which a fuel nozzle is inserted, the fueling device comprising: a filler neck extending axially and having an opening side configured to receive fuel injection from the fuel nozzle, the filler neck including a layered structure formed by stacking a first resin layer made of a first resin on a second resin layer made of a second resin, the second resin is harder than the first resin, and the second resin layer is provided on an inner side of the first resin layer; and a mounting member mounted on the opening side of the filler neck, wherein the first resin layer has a higher impact resistance than the second resin layer, the second resin layer has a higher fuel permeation resistance than the first resin layer, the filler neck includes an engagement element provided on the opening side of the filler neck, the engagement element being made of the second resin and being part of the second resin layer and extending radially outward from the second resin layer and passing through and beyond the first resin layer, and the mounting member having an engagement sleeve that is mounted on the opening side of the filler neck, and the engagement sleeve is configured to engage with the engagement element of the filler neck and secure the mounting member on the filler neck, wherein the engagement sleeve of the mounting member includes an engagement arm that engages with at least one of the engagement element and an engagement recess of the first resin layer of the filler neck. ### Claim 2 (depends on 1) The fueling device according to claim 1, wherein the engagement arm is bordered by and extends between two axially extending slits provided in the engagement sleeve of the mounting member, the two slits defining a deformable portion provided at a position of the engagement sleeve corresponding to the engagement element of the filler neck, and the deformable portion of the engagement arm is configured to enable deforming of the deformable portion in a radial direction. ### Claim 3 (depends on 1) The fueling device according to claim 1, wherein the filler neck has a plurality of the engagement elements that are provided around an outer circumference of the filler neck and respectively include grooves formed in a circumferential direction around outer circumferences of the plurality of engagement elements, and projections protruded radially inward are provided on an inner circumference of the mounting member at a plurality of positions corresponding to the engagement elements and are fit in the grooves of the engagement elements by rotation of the mounting member. ### Claim 4 (depends on 2) The fueling device according to claim 2, wherein the mounting member has a through hole that engages the engaging element of the filler neck. ### Claim 5 A fueling device in which a fuel nozzle is inserted, the fueling device comprising: a filler neck extending axially and having an open end configured to receive fuel injection through the fuel nozzle, the filler neck including a layered structure formed by stacking a first resin layer made of a first resin on a second resin layer made of a second resin, the second resin being harder than the first resin, and the second resin layer being provided on an inner side of the first resin layer; and a mounting member mounted on the opening side of the filler neck, wherein the first resin layer has a higher impact resistance than the second resin layer, the second resin layer has a higher fuel permeation resistance than the first resin layer, the filler neck including an engagement element and an engagement recess provided around an outer circumference of the open end of the filler neck, the engagement recess being formed in the first resin layer; and the engagement element being part of the second resin, extending radially outward from the second resin layer and passing through and beyond the first resin layer, and the mounting member having an engagement sleeve mounted on the opening side of the filler neck including a plurality of engagement arms configured to secure the mounting member on the filler neck, one of the plurality of engagement arms engaging with the engagement element of the filler neck, and another one of the plurality of engagement arms engaging with the engagement recess of the filler neck, wherein the engagement sleeve of the mounting member includes slits adjacent the plurality of engagement arms, and the one of the plurality of engagement arms engaging with the engagement element of the filler neck includes a through hole receiving the engagement element of the filler neck.