Patent ID: 7121431

Claim:
A flask, comprising: an outer case having a first half portion and a second half portion; a hinge means pivotally connecting said first half portion with said second half portion at a lower side thereof, wherein said first half portion and said second half portion bound a space therebetween in a closed configuration; said first half portion comprising a first neck portion extending from an upper side thereof, and said second half portion comprising a second neck portion extending from an upper side thereof, wherein said first neck portion flushes against said second neck portion when said flask is in a closed configuration and forming a substantially cylindrical neck portion having an upper periphery and a bore providing access to said space; said cylindrical neck portion having a plurality of grooves continuously extending in a horizontal direction around the inner peripheral surface of said cylindrical neck portion; a cap removably securable to said cylindrical neck portion; a container having a neck portion having an upper periphery and including a plurality of ridges continuously extending in a horizontal direction around an outer periphery of said container neck portion and dimensioned and configured to removably engage with plurality of grooves on said outer case neck portion securing said container within said space between said first and said second half portions; said upper periphery of said container defining an opening; said neck portion having a bore providing access to said container; wherein said upper periphery of said neck portion of said container is flushed with and on the same plane as said upper periphery of said outer case cylindrical neck portion when said container is disposed within said space and said outer case is in a closed configuration.