| 摘要 |
A lockable closure cap assembly includes a closure cap having a threaded bore for threadable engagement with the threads of a container neck, an annular shell surrounding said closure cap, and a lock/cam/clutch mechanism for selectively engaging and disengaging the closure cap with the annular shell to permit rotation of the closure cap with the annular shell and free rotation of the annular shell with respect to the closure cap, respectively. The mechanism includes at least one projection on the closure cap, a lock assembly mounted in a fluted bore in said annular shell; the lock assembly has one or more key (or combination) operated lock elements projecting laterally of the axes of said lock. The annular shell has a fluted bore in a surface thereof for receiving said lock assembly with one or more lock elements received in a flute in the fluted bore to prevent rotation thereof in the absence of a key, and permit rotation only on the presence of a key, and a clutch device operated only by the presence of a key in said lock assembly to engage and engage said closure cap with said annular shell. The cam/clutch portion of the mechanism has a clutch shoe carrier for clutch shoes which have cam surfaces interacting with a cam element on the lock cylinder to project and retract the clutch shoes to engage and disengage with a clutch projection on the closure cap.
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