| 摘要 |
A closure has an inner cap (41) for mounting sealingly on a container and carrying fixed indicia to rotate with the cap, and an outer cap (21) rotatably mounted on and nesting about the inner with an indicator window at which the indicia can be viewed. One cap has an abutment (46) to engage a number of formations (54) on the other cap to stop rotation in one direction and yieldingly resist rotation in the opposite direction. The indicia are pref. in a disc (62) adhered in a recess in the inner cap top, or are adhered on to the cylindrical skirt of the inner cap. The abutment is pref. a rib on one cap which engages in grooves in the other. The inner cap may have an internal thread for mounting on a container, and may have a conical part carrying the indicia and fitting over a drop dispenser on the container. |
