In a safety device for a tank system with a tank pipe 1 which has a pliable region and a rigid region, a reinforcing element 7 is allocated to the rigid region of the tank pipe 1 . The reinforcing element 7 is hollow and is in contact with the entire circumference of the tank pipe 1 with its interior contour.
1. A safety apparatus for a tank system which includes a tank pipe having one end for connecting to a filler neck and another end for connecting to a fuel container, a pliable region to compensate for deformations arising in the event of an accident, and a rigid region, said safety apparatus comprising a reinforcing element having a plurality of sleeve elements allocated to the rigid region, each of said sleeve elements having a substantially semicircular cross section and a plurality of circumferentially extending tongues with openings defined therein, wherein:
an interior contour of the reinforcing element conforms to an outer contour of the tank pipe;
the sleeve elements are arranged on opposite sides of the tank pipe so as to enclose an outer circumference of the tank pipe;
each of the sleeve elements has a plurality of lateral edges separated along separating lines from a plurality of facing lateral edges of at least one other of the sleeve elements without touching those facing lateral edges; and
projections, protruding radially through the openings, are receivable in said openings defined in said tongues.
2. The safety apparatus according to claim 1 , wherein the reinforcing element has a substantially circular cross section that is constant over its length.
3. The safety apparatus according to claim 1 , wherein the tank pipe and the reinforcing element are made of different materials.
4. The safety apparatus according to claim 1 , wherein all of the sleeve elements have openings for accommodating said projections.
5. The safety apparatus according to claim 4 , wherein the projections are constructed in one piece with the tank pipe.
6. The safety apparatus according to claim 4 , wherein the projections are outward projecting contours of the tank pipe.
7. The safety apparatus according to claim 4 , wherein the openings are substantially constructed trapezoidal.
8. The safety apparatus according to claim 4 , wherein the projections are constructed in one piece with one of the sleeve elements.
9. The safety apparatus according to claim 8 , wherein the projections are bent boundary regions of one of the sleeve elements.
10. The safety apparatus according to claim 1 , wherein each of the separating lines is a meandering separating line.
11. The safety apparatus according to claim 1 , wherein the openings comprise oblong holes.
12. The safety apparatus according to claim 1 , wherein boundary regions of the tongues are bent.
13. The safety apparatus according to claim 1 , wherein a pair of the separating lines are located on circumferentially opposing locations of the tank pipe.