PROTECTIVE CAP Russian patent published in 2002 - IPC

FIELD: packing; sealing caps. SUBSTANCE: invention relates to sealing devices, mainly to caps of bottles preventing refilling of bottles. Proposed cap for bottle has bushing with means for fastening bushing on bottle neck, plug connected with upper part of bushing by easy-to-break connector. Body to pour liquid out of bottle is arranged in plug space being connected with plug by easy-to-detach connector. Pour-out body has outer and inner bushings and flexible member connected by ribs. Flexible member has base with through channel, projections over outer and inner contour of base forming space open from top. Flexible member tightly secured in bottle neck is sealed relative to pourout body. Inner bushing of pourout body is made with stopped upper and face and is located in open space of flexible member for enclosing by its lower part inner projection of flexible member forming clearance between base and walls of said ring space of flexible member. When pouring out liquid from bottle, liquid passes through channel of base, space of flexible member and further on between ribs of pourout body. If attempt is made to add liquid into bottle, liquid will fill open space of flexible member and owing to the fact that the latter is partitioned with clearance by lower end face of bushing with stopped end face, liquid in outer part of flexible member space will press on liquid in inner part of flexible member space. As space of bottle is closed by bushing with stopped end face, pressure is built in bottle preventing passage of liquid into bottle. EFFECT: increased reliability of device. 2 dwg