| 摘要 |
A fuel tank cap includes a ball cage centrally depending from a fuel tank cap body, said ball cage having a plurality of tank neck engaging balls located in a plurality of side openings through which the balls are selectively urged. A plunger cone within the ball cage is slidable between a first position where it urges the aforementioned balls outwardly for locking the cap to the fuel tank neck, and a second position allowing inward movement of the balls within the ball cage and removal of the cap from the fuel tank neck.
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