Patent ID: 7213507

Claim:
An infusion beverage brewing system comprising A) a container with an open top for receiving a quantity of hot liquid, B) an infuser including: i) an infusing chamber with open and closed ends having a solid wall portion extending from said closed end and a perforated wall portion intermediate said solid wall portion and said open end, said infusing chamber receiving a material to be infused, and ii) a plunger assembly for being displaced within said infusing chamber after the infusion, said plunger having a) a piston spanning said infusing chamber in a sealed relationship therewith, said piston comprising first and second rigid disks and an intermediate flexible disk having a one-way valve therethrough and b) an operator for moving said piston past said perforated wall portion to said solid wall portion wherein said valve opens to allow infused liquid to pass through said piston while blocking the passage of infusible material and closes when the motion of the operator terminates whereby said piston and said solid wall portion and said closed end form a repository for the material that is isolated from the liquid.