METERING STOPPER Russian patent published in 2007 - IPC B65D49/04 

FIELD: sealing facilities.

SUBSTANCE: invention is designed for stopping liquid-filled bottles and for preventing replenishment of bottles after pouring out metered amount of liquid. Proposed metering stopper has housing with at least two ring seals at outer side for tight contact with inner walls of bottle neck and with through space closed at one end face of housing by shutoff valve arranged in housing space, and at other end face, by hollow insert with channels to pass liquid, with central boss and ring-shaped groove on wall, cover with ring bosses to close liquid pass channels in insert, one of which, namely, central boss, tightly fits central boss of insert, and other ring boss is provided with ring-shaped thickened part on free end face tightly fitted in ring-shaped groove of insert, and cap arranged over cover and provided with side walls to enclosed bottle neck. Ring-shaped groove is made in upper part of housing or insert on outer side. Cover is provided with additional ring boss with ring-shaped thickened part on free end face fitted in ring-shaped groove made on outer side of housing or insert, section of cover in contact with end face of bottle neck is made in form of ring corrugation forming, together with additional ring boss of cover, a lever creating additional force on ring-shaped thickened part of ring boss for tight fitting to walls of ring-shaped groove when mounting cap with cover on bottle neck. Section of cover on contact with end face of bottle neck can be provided with several ring corrugations.

EFFECT: improved reliability of fixing initial position of components of metering stopper, provision of tightness in places of connection of parts and connection with bottle neck.

4 cl, 1 dwg