| 摘要 |
In combination, a retaining ring and nipple ring assembly for application to a container, said retaining ring including a top, a skirt depending from the outer edge of the top having means for securing the retaining ring to the container, an inner wall depending from the inner edge of the top defining an opening through which the nipple engages, an outer wall depending from the top and spaced radially from the inner wall to define a circumferentially extending channel therebetween, means defining at least one cut in said outer wall, said nipple including a feeding tip at one end and an upstanding locking rib at its opposite end adapted to engage in said channel in the assembled relation, said locking rib and inner and outer walls of said retaining ring being so dimensioned to provide a first circumferentially extending passageway adjacent the lower edge of said inner wall and a second circumferentially extending passageway between said locking rib and the channel.
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