| 摘要 |
A unitary closure cap having a skirt receiving and snap-fitted on the end of a container neck to close the mouth of the container and also to rotatably support the closure cap on the neck. A radially inwardly directed locking flange carried within the container mouth is formed with a plurality of relatively spaced gaps and the cap has support means extending into the mouth and supporting a plurality of lugs which project radially beneath and in axial abutment with the flange when the cap is operatively applied. These lugs are positioned and proportioned for registry with the respective gaps so that in a predetermined position of angular orientation of the cap on the container they are no longer operative and the cap may be removed from the container simply by releasing the snap-fit in known manner.
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