Patent ID: 8292199

Claim:
A Locking element for a dispenser for discharging a medium comprising: an insert body ( 22 ), which has an outlet channel ( 44 , 51 , 52 ) and an exit opening ( 46 ) for the medium to be discharged, the insert body having a first cylindrical channel section ( 44 ) which runs into the exit opening at one end and a projecting shoulder ( 50 ) on the other end, the shoulder ( 50 ) is followed by a channel section ( 51 ) having a diameter that is constant for a portion and is followed by a conically enlarging channel section, the conically enlarging channel section verges into a cylindrical section ( 52 ); a sealing element ( 48 ) that includes a seat region ( 49 ) sized to fit within the first cylindrical section of the insert body and resting against the shoulder; a piston element ( 56 ), sized to fit within the insert body, and having a piston head ( 58 ) and at least two elastic resilient legs ( 64 ) which extend radially outward and away from the piston head opposite of the direction of flow of the exiting medium, the piston head cooperating with the seat region of the sealing element to form a seal and flush with the exit opening when in a sealing position, and the resilient legs arranged in the enlarging channel portion of the outlet channel; wherein the piston head is pre-tensioned against the piston seat by the at least two elastic resilient legs and is pressed out of the seat region of the sealing element by and in the direction of the flow of the exiting medium to an open position against the force of the resilient legs.