초록 ▼

A drinking vessel suitable for use as a trainer cup or the like comprises an open-mouthed generally cup-shaped container (2) and a lid (5) for the open mouth of the container. The lid has a mouthpiece (7) associated with it. Valve means (18) are provided to prevent flow of liquid from the interior o

A drinking vessel suitable for use as a trainer cup or the like comprises an open-mouthed generally cup-shaped container (2) and a lid (5) for the open mouth of the container. The lid has a mouthpiece (7) associated with it. Valve means (18) are provided to prevent flow of liquid from the interior of the container through the mouthpiece unless a predetermined level of suction is applied to the mouthpiece. Suction alone may be sufficient to withdraw liquid from the trainer cup.

대표청구항 ▼

[ I claim:] [1.] A drinking vessel for use as a trainer cup comprising:a cup-shaped container for drink, said container having an open mouth;a lid covering said open mouth of said container, said lid including a substantially planar cover portion and a skirt surrounding said cover portion for engagi

[ I claim:] [1.] A drinking vessel for use as a trainer cup comprising:a cup-shaped container for drink, said container having an open mouth;a lid covering said open mouth of said container, said lid including a substantially planar cover portion and a skirt surrounding said cover portion for engaging said container, said lid forming a tight fit over said open mouth, said lid being further provided with a spout extending from said cover portion; anda valve element operatively associated with said spout, said valve element having a substantially dome-shaped region, said valve element comprising a self-closing slit valve formed in said dome-shaped region, said slit valve being arranged to open upon no more than a predetermined difference of pressure, greater within the vessel than outside, being present across said slit valve, whereby said valve element is effective to prevent flow of said drink from within said container unless a predetermined level of suction is applied to the spout, and whereby a user is able to draw said drink through the spout by the sole application of suction thereto to provide said difference of pressure.