Patent ID: 8893912

Claim:
A closure device for a dispensing a product from a product container, said closure device comprising: a base having a body with a connector portion adapted to mount the closure device on a product container, said base comprising: a product channel in the body of base, and a rupturable seal occluding the product channel and forming a lower seal of the closure device, a rotary part, that is rotatably journalled on the base, wherein the rotary part has a product passage in communication with the product channel in the base, an upper sealing arrangement arranged on the rotary part and forming an upper seal of the closure device that is remote from the lower seal and seals the product passage of the rotary part, a lower seal rupturing member that is movable in a rupturing motion relative to the base to rupture the rupturable lower seal, motion transfer means adapted so as to effect the rupturing motion of the lower seal rupturing member upon suitable rotary actuation of the rotary part, and a protective overcap that is removable by the user, wherein the upper sealing arrangement is in closed condition prior to first time removal of the overcap, wherein the overcap is connected to the base and is adapted to be rotated by the user with respect to the base in order to remove the overcap from the base, wherein the overcap engages the rotary part so as to cause rotary motion of the rotary part upon removal of the overcap, so that the lower seal rupturing member effects the rupturing motion to rupture the rupturable lower seal and thereby open the product channel by user removal of said overcap, and wherein the upper sealing arrangement is adapted to remain in closed condition, during the process of removal of the overcap.