COVER WITH SAFETY MECHANISM FOR VESSEL NECK Russian patent published in 2018 - IPC B67D1/08 

FIELD: machine building.

SUBSTANCE: invention relates to closures with isobaric valves. Cover with safety mechanism for the neck of the vessel comprises hollow body 1 with lower cylindrical portion 2 having lock holes 3 of rectangular shape, neck retainers 4 disposed in the cavity of body 1, O-ring 5 for the upper edge of the neck located in groove 6 and isobaric valve. Isobaric valve includes locking ring 7, spring-loaded by helical spring 8. Locking ring 7 is mounted on guide bushing 9 with the ability to move and interact with the outlet opening of the cavity of body 1. Support 10, which is the support of helical spring 8, is mounted on guide bushing 9, comprises locks 11 and elastic wall provided with internal stiffeners 12. Internal stiffeners 12 are able to interact with the outer surfaces of the turns of helical spring 8 and are located opposite to locking holes 3. On the outer surface of lower cylindrical part 2 of body 1, shoulder 14 is arranged for fixing additional sealing ring 15 designed to interact with the mating face of the neck. Locking ring 7 is provided with arcuate orthogonal projections 16 formed with fluid openings 17 with a guiding external surface beneath the inner surface of lower part 2 of body 1 and with internal radial teeth 19 having the possibility of interacting with the outer surfaces of the turns of helical spring 8. Sealing ring 5 for the upper edge of the neck is located in groove 6 with walls made in the form of guides for the neck.

EFFECT: invention can be used for disposable containers (bottles) made of polyethylene terephthalate (PET) intended for automated filling, transportation and storage of food beverages such as beer, kvass, juices, water, etc.

10 cl, 1 dwg