Patent ID: 7404814

Claim:
An infusion vessel comprising: a vessel body having an internal space in which an infusion medium is reserved, a discharge mouth continuing from a lower portion of the vessel body and having a medicine chamber therein kept airtight against ambient air by a handling cap that is rotatable around a first axis, a separator intervening between the internal space and the medicine chamber so as to keep the chamber in a liquid-tight state against the space, and the separator configured to reposition axially relative to the first axis so as to link the internal space to the medicine chamber, the infusion vessel comprising a cam mechanism comprising an elongate axially extending cam rod that extends in cantilever fashion to an end on one of the handling cap and separator and cam with an axially facing surface on the other of the handling cap and separator, the cam rod spaced from the first axis and having a length that extends generally parallel to the first axis, the cam rod end and axially facing cam surface cooperating by moving against and relative to each other to cause the separator to reposition axially so as to link the internal space to the medicine chamber, as an incident of the handling cap rotating around the first axis.