Patent ID: 8528771

Claim:
A closure for opening and covering a sealed container comprising a pierce plate, a cap, a container skirt, and a truss wherein said closure moves between a first closed position, an open position and a second closed position wherein said pierce plate comprises an upper surface, an aperture, a rim lock portion, and a lower surface, wherein said lower surface comprises a loading portion, and a piercing portion wherein said piercing portion comprises a channel which is juxtaposed to the lower surface and aligned with said aperture to permit fluid to flow between the channel and the aperture wherein when the closure is in the first closed position, the upper surface of said piercing plate sits on an inclined plane at an angle from the portion of the upper surface proximal to the loading portion to the portion of the upper surface proximal to the rim lock portion wherein said portion of the upper surface proximal to the loading portion is below a horizontal plane and the portion of the upper surface proximal to the rim lock portion is above the horizontal plane wherein said loading portion moves in response to the movement of the cap from the first closed position to open position wherein said truss comprises a pierce plate end and a pivot end, wherein said pierce plate end is juxtaposed to the lower surface of said pierce plate wherein said truss moves pivotally about the pivot end in response to the movement of the pierce plate wherein said cap comprises an aperture cover, an inner surface, an outer surface, and said inner surface further comprises a foot that moves in response to the movement of the cap wherein said foot is proximal to the loading portion of the pierce plate and contacts said loading portion of the pierce plate to move said loading portion when the cap moves from the first closed position to the open position wherein when said cap moves from the open position to the second closed position said foot moves substantially tangential to said loading portion of the pierce plate but does not substantially move said pierce plate when said cap moves between the open position to the second closed position wherein said container skirt comprises a rim stop, wherein said container skirt is pivotally attached to said cap and adapted to mate with a container wherein when pierce plate moves in response to the movement of said foot portion said rim lock portion engages said rim stop to substantially hold said pierce plate.