| 摘要 |
A fuel filler cap is provided with a nozzle engagement that can engage with the nozzle of a fuel pump, enabling it to be unscrewed by turning the fuel pump nozzle. The nozzle engagement structure is designed so that it can only engage with a particular size of fuel pump nozzle, resulting in a fuel filler cap that cannot be removed with a fuel pump nozzle of a different size and goes some way toward preventing the misfuelling of cars equipped with the fuel filler cap. A second fuel filler cap is provided with a lid that may be freely rotated on the body. The cap may be activated by engaging an appropriate nozzle with the nozzle engagement means, causing the lid to become firmly attached to the cap and therefore operable for unscrewing the cap.
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