# US 10,500,948 B2 · Fuel filling device

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- Number: US 10,500,948 B2
- Document ID: US10500948B2
- Status: Granted
- Kind: B2
- Application number: 15/766,615
- Filed: 2016-10-06
- Published: 2018-10-11
- Granted: 2019-12-10
- Earliest claimed: 2015-10-09
- Assignees: Nifco Inc.
- Applicants: Nifco Inc.
- Inventors: Takatsugu Hirose; Kensuke Ogose
- Web page: https://patentgrep.com/patent/US10500948B2

## CPC

- B60K 15/04: Tank inlets (B60K15/077 takes precedence)
- F02M 37/00: Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- 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 2015/0538: {with open or close mechanism automatically actuated}
- 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
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

## Abstract

A fuel filling aperture device includes a closing member turned to an open position to open a fuel filling aperture by an introduction of a fuel filling nozzle. The closing member includes a pair of flap members, and urging devices urging the pair of flap members to be positioned at a closed position. Each of the pair of flap members includes a turning assembly portion which becomes a center of the turning, and an abutment portion relative to the other flap member. Also, a seal projecting piece abutting against an opening edge portion of a pass-through opening of the fuel filling nozzle at the closed position, and an edge projecting piece continuing to a terminal of the seal projecting piece, and forming at least one portion of the abutment portion, are formed on a surface portion of each of the pair of flap members.

## Claims

### Claim 1

A fuel filling aperture device, comprising:
a closing member turned to an open position by an insertion of a fuel filling nozzle to open a fuel filling aperture,
wherein the closing member includes a pair of flap members, and urging devices urging the respective pair of flap members to be positioned at a closed position,
the pair of flap members respectively includes a turning assembly portion which becomes a center of turning, and an abutment portion relative to another flap member, and
a surface portion of each of the pair of flap members includes a seal projecting piece configured to abut against an opening edge portion of a pass-through opening of the fuel filling nozzle at the closed position, and an edge projecting piece continuing to a terminal of the seal projecting piece and forming an edge of at least one portion of the abutment portion.

### Claim 2 (depends on 1)

A fuel filling aperture device according to claim 1, wherein each of the pair of flap members has a semicircular shape in which a straight portion thereof is the abutment portion, and includes the seal projecting piece in such a way so as to form an edge of an arc-shaped portion.

### Claim 3 (depends on 1)

A fuel filling aperture device according to claim 1, wherein a surface portion of the flap member includes a groove-shaped recessed portion in which a cross-sectional shape in a direction parallel to a center axis of turning has an arc shape, and the edge projecting piece is formed only in a portion positioned outside the groove-shaped recessed portion in the abutment portion.