Patent ID: 6415813
Filing Date: 2002-07-09
Classification: B60K,Y10T

Abstract:
A shut-off valve for a tank, comprising: a filling tube with a filling-side valve seat and a tank-side valve seat, said seats being spaced apart from one another in a throughflow direction of the filling tube; a valve body with a sealing element movable between the valve seats so as to butt against one of the valve seats depending on position of the valve body in the tube; means for prestressing the valve body toward the filling-side valve seat so as to seal the filling tube in relation to the filling-side valve seat in a rest position of the valve body, the prestressing means being configured so that the prestressing of the valve body can be overcome by flow pressure of a medium which is to be introduced toward the tank-side valve seat; and a filling-level-controlled stop device operatively arranged so as to be movable between a first position for stopping movement of the valve body in the direction of the tank-side valve seat in a position in which the valve body abuts the stop device so that the sealing element is kept at a distance from the valve seats and so that the medium which is to be introduced can flow around the valve body, and a second position in which the stop action of the stop device is eliminated when a predetermined filling level in the tank is reached so that the valve body moves to a position in which the valve body contacts the tank side valve seat to shut off fuel flow to the tank, the filing tube including a first tube portion via which, during a filling operation, the medium is introduced, a second tube portion arranged downstream of said valve body and having an inner width corresponding substantially to that of the first tube portion, and a widened tube portion with a larger inner width than the first and second tube portions, arranged between the first tube portion and the second tube portion, the valve body being arranged in the widened tube portion.