Abstract: This device is intended for a motor vehicle tank (2) having on the one hand a filler pipe (4) provided with a flap (12) mounted so as to pivot about a spindle (34), prestressed in the closed position and intended to be opened by the end of a filling nozzle (10), and on the other hand a pipe (16, 18) for venting the tank. A device (20) is provided for closing off the vent pipe (16, 18) of the tank whilst it is being filled, being controlled from the pivoting of the flap (12) about its spindle (34).

Abstract: The invention concerns a ventilating device for a motor vehicle fuel tank wherein a valve (12) is equipped with a ball (20) arranged in a chamber (14) wherein emerges an intake orifice (16) which opens into the center of a lower wall (19) concave upper surface (22) of the chamber (19), the ball (20) being supported on the concave upper surface (22). The invention is characterised in that the slope, relative to the horizontal, of the concave upper surface (22) decreases in the direction radially away from the axis (A1).

Abstract: A device for ventilating a motor vehicle fuel tank comprises a chamber (24) communicating with the tank and, through a top outlet (30), with a discharge duct (28). The device further comprises, inside the chamber (24), a float (32) controlling a needle valve (40) for closing the top outlet (30) when the fuel level exceeds a predetermined threshold in the chamber (24). The device also comprises, between the tank and the float (32), flow restricting elements (66,68) for limiting the fuel displacement speed before it comes into contact with the float (32).

Abstract: A device (10) for venting a fuel tank has a chamber (17) communication on the one had with the tank and on the other hand, through an outlet orifice (19), with a pipe (20) for opening to atmosphere. A float (25) has an external skirt (27) delimiting an internal space in the float (25) and a needle (28) adapted to close off the outlet orifice (19) when the fuel level exceeds a predetermined threshold in the chamber (17). The float (25) has a least one partition (29) adapted to divide the internal space in the float (25), with a height substantially equal to the height of the external skirt (27).

Abstract: This device is intended for a motor vehicle tank (2) having on the one hand a filler pipe (4) provided with a flap (12) mounted so as to pivot about a spindle (34), prestressed in the closed position and intended to be opened by the end of a filling nozzle (10), and on the other hand a pipe (16, 18) for venting the tank.

Abstract: The invention concerns a ventilating device for a motor vehicle fuel tank, wherein a valve (12) is provided with a counter-weight (22) which, when the vehicle is not running in a substantially horizontal position, causes the valve (12) to be closed, and which, when the vehicle is running, causes the valve (12) to open. The invention is characterised in that the counter-weight (22) is supported on the upper concave surface (24) of a spring retainer (20) whereof one lower surface comprises means for closing the valve (12), and when the counter-weight (22) is spaced from its stable equilibrium position by vibrations, it makes the spring retainer (20) tilt so as to cause the valve (12) to be opened.

Abstract: A device (10) for venting a fuel tank has a chamber (17) communicating on the one hand with the tank and on the other hand, through an outlet orifice (19), with a pipe (20) for opening to atmosphere.

Abstract: A filler head for a motor vehicle fuel tank filling pipe has a bowl-shaped body, the upper face of which includes a filling orifice. A shut-off valve is pivoted to the bowl of the body between a rest position, towards which it is resiliently biassed and in which it closes off the filling orifice, and a withdrawn position in which it lies within the bowl and in which the filling orifice is open. The valve is put into its withdrawn position by a filling nozzle when the latter is introduced into the filling orifice. The filler head has automatic locking means for locking the shut-off valve in its rest or closed position, with these locking means comprising an unlocking control member.

Abstract: A venting system for a motor vehicle fuel tank comprises a fuel tank having a filling pipe, an overflow duct, a gas vent duct, a safety valve; fresh air duct for removal of excess fuel vapour from the fuel tank through the fresh air duct. A scavenging duct and an auxiliary valve for overcoming failure of the scavenging duct and/or of the safety valve, in order to ensure that the fuel tank is vented through the fresh air duct are also provided.

Abstract: A venting system for a motor vehicle fuel tank comprises a fuel tank having a filling pipe, an overflow duct, a gas vent duct, a safety valve; fresh air duct for removal of excess fuel vapor from the fuel tank through the fresh air duct. A scavenging duct and an auxiliary valve for overcoming failure of the scavenging duct and/or of the safety valve, in order to ensure that the fuel tank is vented through the fresh air duct are also provided.

Abstract: A lock assembly comprises a stator, a rotor pivoting in a bore in the stator and a plurality of stator piston/rotor piston pairings which are resiliently urged towards a key channel provided axially in the said rotor for receiving a coded key slidable in said channel and having flats each of which cooperates with one of the said pairings in order to displace the latter against the action of the said resilient means so that the generatrix of separation between each rotor piston and each stator piston of one pairing is at a tangent to the said rotor. The pairs of stator pistons and rotor pistons and their resilient restoring means are preassembled each in a radial bore in the stator. The radial bores are distributed angularly about the axis of the lock in at least one diametrical plane and are closed at their inner end by an abutment which is moved aside during insertion of the rotor.