Abstract: A fuel tank for vehicles has a filler tube and a filling level limiting device, with the filler tube comprising, in the interior of the fuel tank, a closing device which interacts with an actuating device which is composed of: a) a frame which is fastened in the interior of the fuel tank and which has a force store which actuates the closing device; b) a locking arrangement which holds the force store in the stressed state; c) a release mechanism which is operatively connected to a float; and d) a stressing mechanism for stressing the force store. The actuating device ensures that a flap closes precisely when a nominal filling level is reached, and does not open again even under intense fluctuation of the liquid level.

Abstract: A fuel leak prevention system and method for providing same includes a check valve for insertion into the discharge end of a spout assembly of a fuel dispensing nozzle, the check valve being located downstream of the nozzle's fuel control valve so as to prevent any leaking or dripping of fuel from the spout when the nozzle is deactivated. The check valve includes a pivoting flap that is preferably spring-loaded and predisposed to remain closed to seal the spout when there is no fuel flowing through the nozzle, but which is allowed to rotate within the spout to open the nozzle and allow the flow of fuel when the nozzle is activated. In one embodiment, the check valve can be inserted into the spout during fabrication of the nozzle. An alternate embodiment allows the retrofit of an existing nozzle by adding an extension that contains the check valve to the spout on the nozzle.

Abstract: A fuel leak prevention system and method for providing same includes a check valve for insertion into the discharge end of a spout assembly of a fuel dispensing nozzle, the check valve being located downstream of the nozzle's fuel control valve so as to prevent any leaking or dripping of fuel from the spout when the nozzle is deactivated. The check valve includes a pivoting flap that is preferably spring-loaded and predisposed to remain closed to seal the spout when there is no fuel flowing through the nozzle, but which is allowed to rotate within the spout to open the nozzle and allow the flow of fuel when the nozzle is activated. In one embodiment, the check valve can be inserted into the spout during fabrication of the nozzle. An alternate embodiment allows the retrofit of an existing nozzle by adding an extension that contains the check valve to the spout on the nozzle.

Abstract: In an arrangement for limiting the fill level in a fuel tank having a filler neck with a tank inlet end, a valve flap is pivotally supported in the inlet end such that, in an open position, the valve flap is pivoted toward the fuel flow entering the tank during refueling and is connected, by way of a crank arm and a coupling rod to a float which is disposed in an essentially vertical guide tube. The coupling rod extends through the float and has spaced top and bottom stops providing for lost motion coupling between the float and the coupling rod whose weight is sufficient to keep the valve flap in an open position. When the fuel in the tank lifts the float and, after the float engages the top stop, lifts the coupling rod, closing movement of the valve flap is initiated which is then fully closed by the inflowing fuel utilizing the lost motion distance between the float and the bottom stop of the coupling rod.