Patent ID: 8870038

Claim:
A pushbutton dispenser for bottles with carbonated beverages comprising a head ( 1 ) able to be screwed onto a bottle with a lateral pouring channel ( 15 ), a pushbutton ( 16 ) on its top, and a suction tube ( 10 ) projecting downwards, which is meant to reach down to the bottom of the bottle ( 20 ) to be equipped, and which opens out at the top into a valve device in the head ( 1 ), which exhibits a regulating means ( 5 ) able to be moved axially relative to the bottle ( 20 ), which is acted upon by a spring ( 3 ) in the closing direction, and is able to be acted upon for opening from above manually with a pressing on the pushbutton ( 16 ), so that the pressure in the interior of the suction tube ( 10 ) is able to be reduced to the ambient pressure, through which liquid can be expelled from the bottle ( 20 ) through the inner pressure prevailing in the bottle ( 20 ) from the lower mouth of the suction tube ( 10 ) via the pouring channel ( 15 ), characterized in that the suction tube ( 10 ) is manufactured from a elastomeric plastic, and its outer and inner cross sections are so configured that with an inner pressure reduced to the ambient pressure it can be made narrow by deformation in its flow-through cross section in relation to the increased pressure prevailing from outside.