Abstract: A purely mechanically operating incorrect-refueling device for a filler tube of a tank has a receiving element, which can be pressed apart radially from its interior space at least on opposite wall areas, and a flap, which is arranged on the output side of the receiving element, covers the receiving element in locking fashion in the resting state, and is unlocked and can be opened under pressure when the receiving element is pressed apart.

Abstract: A vulcanization mold (2) includes several segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) which define two end profiles (8, 10) and two inner profile shells (12, 14) having concave surfaces. With synchronous movement sequences, which take place via linear controls from both ends, the segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) are moved together under simultaneous shaping pressure. The outer profile shells (8, 10) pass through twice the distance as the inner profile shells (12, 14). The forming of the work blank (20) is completed via the shaping pressure when the mold (2) has reached the closed position. Preferably the upper profile half shells (8a, 10a, 12a, 14a) and the lower profile segments (8b, 10b, 12b, 14b) are operatively connected to each other via toothed racks (40a, 46a, 48a, 54a; 40b, 46b, 48b, 54b) and gear wheels (42a, 44a, 50a, 52a; 42b, 44b, 50b, 52b) including additional sets of teeth (42a?, 50a?; 42b?, 50b?).

Abstract: A vulcanization mold (2) includes several segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) which define two end profiles (8, 10) and two inner profile shells (12, 14) having concave surfaces. With synchronous movement sequences, which take place via linear controls from both ends, the segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) are moved together under simultaneous shaping pressure. The outer profile shells (8, 10) pass through twice the distance as the inner profile shells (12, 14). The forming of the work blank (20) is completed via the shaping pressure when the mold (2) has reached the closed position. Preferably the upper profile half shells (8a, 10a, 12a, 14a) and the lower profile segments (8b, 10b, 12b, 14b) are operatively connected to each other via toothed racks (40a, 46a, 48a, 54a; 40b, 46b, 48b, 54b) and gear wheels (42a, 44a, 50a, 52a; 42b, 44b, 50b, 52b) including additional sets of teeth (42a′, 50a′; 42b′, 50b′).

Abstract: A pressure and/or vacuum relief valve (11) for fitting in a cap assembly (4) for an automotive tank filler neck (1), with a substantially cylindrical valve housing (12), in which a valve spindle (23) controlling a first valve gap (26, 27) is mounted axially movably, on which, if necessary, a sleeve (29) controlling a second valve gap (27, 30) is guided axially movably, wherein the valve spindle (23) passes through a central aperture (24) in the upper end and a central aperture (25) in the lower end of the valve housing (12) and is axially guided by those apertures (24, 25).

Abstract: A cap assembly (4) for a filler neck, especially of a motor vehicle fuel tank, with a somewhat pot-shaped insert (7) insertable to form a seal for the end of the filler neck (1), having projections (6) at its outer periphery engaging in bayonet or threaded grooves (5) in the filler neck and covered at its upper end projecting from the filler neck by a cap (8), and fitted with an over/underpressure valve (11) which acts via apertures (35, 39) in the base of the insert (7) and in its upper end and/or in the cap (8) between the inside of the filler neck and the atmosphere. The entire insert (7) is pressed from sheet steel and the over/underpressure valve (11) is encapsulated in a valve housing (12) fitted in the insert (7) and having a peripheral flange secured by the folded edge (14) of the insert (7).

Abstract: A blanking cover for the filler neck of a motor vehicle fuel tank has a grip protruding from the blanking cover body so as to ensure that reliable filler neck sealing is maintained in the case of a crash when a collision occurs between the grip and a body part. The grip can be released from the blanking cover body under the action of crash forces.