CAPPING DEVICE Russian patent published in 2010 - IPC B65D41/00 

FIELD: transport, package.

SUBSTANCE: capping device with opening indication for flange fitting contains check skirt and plug consisting of integrated cap and sealing. Herewith, outer surface of sealing is actually cylindrical and check skirt has upper part and lower part. During rotation relative to longitudinal axis, the innermost points of upper part side surface circumscribe circles with radius that is less than radius of circles circumscribed by internal points of lower part side surface. Upper part of check skirt is connected with plug throughout its perimetre. Herewith, throughout the perimetre of zone where check skirt upper part connects with the plug there are fragile segments actually on the same level. Inner surface of check skirt has a shoulder between its upper part and lower part. The shoulder has at least three segments the lowermost points of which are located actually on the same level. Lower part of check skirt has at least two stop projections directed inwards. In the check skirt throughout its height, actually vertical lines of weakness are made which lines divide the skirt into at least four segments, of which at least two have tabs. Radius of circle circumscribed by any of points during rotation relative to longitudinal axis is less than the radius of fitting outer edge. Herewith, near any of fragile segment there is such area of plug surface with which fragile segment is connected that during rotation around longitudinal axis the said fragile segment circumscribes circle with radius that is less than the radius of circle circumscribed by points of this plug surface area. Stopping projections and the lowermost points of segments are vertically mutually spaced at such intervals that at least three of the mentioned lowermost points of the segments could contact with butt end of the said fitting, and stopping projections could contact with flange of the said fitting below its widest part in at least two points.

EFFECT: invention provides creation of capping device that ensures visual and audio control of opening, and after opening the plug provides more tight container sealing than before opening; the device also prevents user hand contact with fragments of fragile connecting strips of capping device; such device is also cheap in manufacturing, easy for installation and reliable in operation.

36 cl, 6 dwg