Timer device for medication container with progressive warning display

Abstract

A visual indicator for a medication container signals to the user that a medication has previously been taken within a prescribed preceding time interval and should not be taken again. A substrate with a permissive symbol or indicator printed thereon is covered by a liquid crystal display which is comprised of a series of separately activatable display segments which, when activated, block visual observation of the permissive indicator. When the container is opened and closed, initially all such display segments are activated, thus blocking or obscuring the permissive indicator. As the prescribed time interval passes, the successive display segments are sequentially deactivated, and when the prescribed time interval has expired, all such display segments are deactivated so that the permissive indicator is fully exposed to observation.

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