DISTRIBUTION CAPS FOR LIQUID CONTAINERS Russian patent published in 2010 - IPC B65D47/20 

FIELD: transportation, liquid distribution.

SUBSTANCE: drinking cap is a solid article made from polymer material, having a first tubular part with a circular cross-section, designed for connection to the mount of a container for drinks, and a second tubular part having a circular cross-section of smaller diametre lying at least partially in the first tubular part, which is joined to the second tubular part by an elastic circular diaphragm integrated with it. The elastic circular diaphragm has at least one flow opening. One end of the second tubular part is closed. One of the elements, specifically the diaphragm or the inner surface of the first tubular part, is joined to the projecting circular first sealing projection. The tubular parts are made coaxial with possibility of relative displacement in the axial direction between the open position, in which the flow opening is open, and the closed position in which the sealing projection is in airtight interaction with the other of the said elements, specifically the inner surface of the first tubular part or diaphragm, with isolation of the openings from the atmosphere through the said airtight interaction of the first sealing projection with the other of the said elements, specifically the inner surface of the first tubular part or diaphragm. The first sealing projection is integrated with the outer surface of the diaphragm and is joined to it at the point lying between its ends or is integrated with the inner surface of the first tubular part, owing to which when the cap is in closed position, the free end of the first sealing projection forms an essentially linear sealing with the inner surface of the first tubular part or the outer surface of the diaphragm.

EFFECT: novel design of a distribution cap with high air-tightness, which is easy to use and avoids undesirable outflow of the distributed liquid during use.

7 cl, 3 dwg