Patent ID: 8371464

Claim:
A closure for a container, comprising: a lid comprising a top surface, a substantially cylindrical sidewall and a flange, wherein a plurality of date indicia are disposed about said lid's top surface, wherein said sidewall defines an annular channel, wherein said annular channel is formed between an upper ring and a lower ring, and wherein the lower edge of the upper ring acts as a stop against removal of said collar from said lid; one or more ridges disposed on said flange; a collar, wherein said collar defines an aperture, and has an exterior wall with an inner surface and an outer surface; a plurality of channels formed on said collar exterior wall's inner surface; and one or more tongues extending from said collar exterior wall's inner surface, wherein a detent is formed at a free end of each of said one or more tongues; said collar fitting onto said lid with a common central axis with said lid, said collar inner surface facing said lid sidewall, said detent engaging within said annular channel of said lid in a first position wherein said collar is rotatable about said lid, and a second position wherein said collar is moved axially with said detent moved out of said annular channel of said lid and said collar is placed into a locked engagement with said one or more ridges of said flange engaged within respective ones of said plurality of channels on said collar inner surface, whereby said plurality of date indicia are variously visible through said aperture of said collar and selectable through rotation of said collar on said lid when in said first position.