Tank cap for standard vehicle fuel tanks

摘要

The tank cap enables the entire filling process to be conducted through the cap (1,1a). It can be folded, pushed or turned to open the tank (3) for filling. It closes automatically when the filling device (2) is removed from it. The closing system may include a force setter (5) operating on it. The force setter may be a spring system, a magnetic system or an electrical system. The tank cap may be integrated into the tank. The filling aperture may only open to the diameter (4) necessary for filling.