Stackable cup

A mouthpiece cup stacking system includes a plurality of substantially identical mouthpiece cups having a sipping spout lid that can mate with a bottom of a first cup when attached to a top of a second cup. Each cup includes a bottom having an annular recess containing a central locking plug capable of cooperating with a central locking lever protruding from a lid on another cup. The sipping spout on each lid is radially offset from the locking lever and fits into an annular recess on the bottom of the cup cooperating therewith, and is circumferentially movable therein until the spout is fully closed by the bottom of the cooperating cup. 一种吸嘴杯堆叠系统，包括多个基本上相同的吸嘴杯，所述吸嘴杯具有啜饮管口盖子，所述啜饮管口盖子在附接到第二杯子的顶部时可以与第一杯子的底部配合。每个杯子包括具有环形凹部的底部，所述环形凹部包含中心锁定塞，所述中心锁定塞能够与从另一杯子上的盖子突出的中心锁定杆配合。每个盖子上的啜饮管口从锁定杆径向偏移并且装配到与其配合的杯子的底部上的环形凹部中，并且可以在该环形凹部中周向移动，直至管口被配合的杯子的底部完全封闭。