Toyoda Gosei Co., Ltd.

Fts Co., Ltd.

Keisuke Yoshida

Norihiro Yamada

Eishin Mori

Koji Miwa

Takashi Ishikawa

Tomohide Aoki

Katsuyuki Kido

Keiji Miyoshi

An apparatus is for inhibiting fuels from flowing out of fuel tanks, and includes a cover, a breather pipe, an upper case, a lower case, and a floating valve. The upper case is welded to the breather pipe in an airtight manner so as to form a chamber for holding the lower case, in which the floating valve is accommodated, therein. Moreover, the breather pipe is welded to the cover in an airtight manner. The apparatus not only obviates O-rings but also is downsized, because the upper case and the breather pipe are sealed by welding.

Apparatus for inhibiting fuel from flowing out of fuel tanks

A device includes a housing fixed to an upper wall of a fuel tank, and having a communication opening in communication with a canister, a float valve received within the housing and floating on a fuel, and the float valve moving upward and downward so as to close and open the communication opening, and a tubular member communicating with the housing, and extending downwardly from the housing into the interior of the fuel tank. The device has through holes of a small diameter which are disposed near an upper wall of the fuel tank, and when the liquid level of the fuel in the fuel tank reaches the lower end opening of the tubular member, a pressure within the fuel tank increases, whereby the filling-up of the fuel tank is detected. When the liquid level of the fuel abnormally rises, the float valve closes the communication opening.

Outflow-limiting device of fuel tank

An apparatus is for inhibiting fuels from flowing out of fuel tanks, and includes a housing and a floating valve. The housing has an evaporator opening, and a major through hole communicating the inside of the housing with the outside and having an opening width sharply reducing from wide to narrow in the direction from the bottom end to the top end. The apparatus detects that the fuel tank is filled up with a liquid fuel by increasing a gas pressure within the fuel tank when the liquid-fuel level is placed adjacent to the top end of the major through hole, and closes the evaporator opening with the floating valve when the level of the liquid fuel rises abnormally.

Apparatus for inhibiting fuels from flowing out of fuel tanks

An apparatus is for inhibiting fuels from flowing out of fuel tanks, and includes a housing having an evaporator opening, a floating valve, a seat, a cylinder having a peripheral wall and a lateral hole formed in the peripheral wall and communicating the inside of the cylinder with the outside, a bottom hole formed in the seat and communicating the inside of the cylinder with the outside, and a flow passage extending from the bottom hole to the lateral hole, flow passage in which a part of the peripheral wall of the cylinder intervenes. Alternatively, the apparatus include a flow passage extending from the bottom hole to the evaporator opening and constricted partially by the seat and a bottom of the floating valve. Thus, gases are less likely to float the floating valve upward, but liquids are likely to float it upward.

An apparatus is for inhibiting fuels from flowing out of fuel tanks, and includes a housing having an evaporator opening and a fuel opening, a double-floating valve and a cover having a cylinder-shaped liquid receptacle. Alternatively, the apparatus can include a housing having an evaporator opening, a fuel opening and a substantially cylinder-shaped dam, a double-floating valve, and a cover free from the cylinder-shaped liquid receptacle. The apparatus can securely inhibit liquid fuels from flowing into a canister even when liquid fuels spout through the valve hole and the evaporator opening, because liquid fuels collide with the liquid receptacle or the dam to return back into fuel tanks through the evaporator opening.

Growing community of inventors

Aichi-ken, Japan

Keisuke Yoshida