Patent ID: 6926138
Filing Date: 2005-08-09
Classification: B65D,Y10S

Abstract:
1. A cap for removably engaging a top opening of a container and comprising: a plunger member including a substantially centrally disposed cavity portion integral therewith and extending downwardly therefrom, said cavity portion for containing an additive therein and being provided with a lower portion provided with an opening for dispensing an additive in a container, said plunger member further including a neck portion integral therewith and spaced from said cavity portion; a receiving member for receiving said plunger member and having a notch portion integral therewith for engaging said neck portion and guiding same substantially vertically between up and down positions, said receiving member further including a threaded portion integral with said notch portion and disposed therebelow, said threaded portion being removably engageable with an opening of a container so that said cap can become effectively attached to same; a spring member disposed between said cavity portion and said neck portion, said spring member being compressed when said plunger member is moved towards a down position, said spring member causing said plunger member to move towards an up position after being released; and a membrane extending across an opening of a container and engaging the opening of said cavity portion, said membrane being penetrated when said plunger member is moved to a down position and thereby allowing the opening of said cavity to pass therebelow so that an additive will pass therethrough and become introduced into a container.