DEVICE FOR VACUUM BOTTLE CLOSURE Russian patent published in 2018 - IPC B65D81/20 

FIELD: packaging industry.

SUBSTANCE: device for vacuum bottle closure includes the lower component, disposed in the bottle neck; the top component installed on the top of the lower component; and the component going up and down, disposed with ability to pass through the lower component and protrude into the top component from the inside of the bottle neck. The going up and down component includes the lifting and lowering rod, connected to the top component through the lower component and lifted and lowered by the top component, and the elastic sealing ring, mounted on the outer circumferential surface of the lifting and lowering rod and tightly closing the interior space of the bottle neck at compression of the elastic sealing ring by the lower component and subsequent deformation of the elastic sealing ring, when the lifting and lowering rod goes up. The going up and down component and the upper component are configured with the through channel for the air discharge, generated therein, and the air discharge channel is opened and closed in accordance with the deformation of the elastic sealing ring.

EFFECT: stable vacuum holding in the bottle for a long period of time.

9 cl, 8 dwg