| 摘要 |
A vehicle fuel tank cap designed to be secured idly in the closed position by activating a lock. The cap presents an outer member which may be turned manually by the user, an inner member housed idly inside the outer member and designed to screw onto a filler, and a control member carried in idle and axially-locked manner on the inner member and secured angularly integral with the lock. The control member is secured, by means of a reversible threaded coupling, to the outer member which is designed to move axially in relation to the inner member and is provided with a saw-tooth ring gear designed to mesh with a corresponding ring gear on a flexible portion of the inner member.
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