Abstract: A member that positions a vent disc in an end of a container is provided. The member has at least one projection extending from the vent disc virtually solely for positioning the vent disc in its secured position in the end of a container. The at least one projection is located in the center portion of the vent disc and can be one projection, which extends from the vent disc at the center point of the vent disc. The projection can be of a geometrical shape that facilitates gripping and the handling of the vent disc, including rectangular, ellipsoidal or cylindrical shapes.

Abstract: A drinking cup assembly having a cup having an open end, a cap adapted to enclose the open end, the cap having a drinking spout and an air vent and a pair of mating surfaces that align with the drinking spout and the air vent, and a removable flow control valve adapted to engage the mating surfaces. The cap has a retaining mechanism that in conjunction with one mating surface secures in place the flow control element when not in use.

Abstract: A drinking cup assembly including a cup having an open end; a cap adapted to enclose the open end, the cap including a drinking spout and an air vent and mating surfaces adjacent or incorporated into the drinking spout and the air vent; and a flow control valve including two stacks adapted to engage the mating surfaces, each of the two stacks having a concave valve face at a top portion thereof.

Abstract: A drinking cup assembly including a cup having an open end; a cap adapted to enclose the open end, the cap including a drinking spout and an air vent and mating surfaces adjacent or incorporated into the drinking spout and the air vent; and a flow control valve including two stacks adapted to engage the mating surfaces, each of the two stacks having a concave valve face at a top portion thereof.

Abstract: A drinking cup assembly including a cup having an open end; a cap adapted to enclose the open end, the cap including a drinking spout and an air vent and mating surfaces adjacent or incorporated into the drinking spout and the air vent; and a flow control valve including two stacks adapted to engage the mating surfaces, each of the two stacks having a concave valve face at a top portion thereof.

Abstract: A member that positions a vent disc in an end of a container is provided. The member has at least one projection extending from the vent disc virtually solely for positioning the vent disc in its secured position in the end of a container. The at least one projection is located in the center portion of the vent disc and can be one projection, which extends from the vent disc at the center point of the vent disc. The projection can be of a geometrical shape that facilitates gripping and the handling of the vent disc, including rectangular, ellipsoidal or cylindrical shapes.

Abstract: A cleaning device has a handle. The handle has a wall with a distal end with a recess extending axially into the handle, and an elongated nipple brush secured in the recess, such that the distal end of the brush extends axially beyond the distal end of the handle. The nipple brush can be housed in a core having a main body with a sponge secured thereto and an extension with opposed depressible tabs that can be inserted into the recess of the handle. Each tab has one or more protuberances that are biased to seat in opposed apertures in the wall of the handle. The core has an axial channel. When the extension of the core is inserted in the recess and attached to the handle, there is provided a cleaning device with a sponge at one end of the handle and a nipple brush housed in the channel of the core.

Abstract: A vent disc for a container is provided. The vent disc has a concavely curved domed central panel with a plurality of perforations extending therethrough along radii that form the concave curvature of the domed central panel. The domed central panel can have a plurality of upwardly extending depressions therein that leave residual central panel above the depressions. The depressions have center lines that are coincident with radii that form the concave curvature of the domed central panel. The perforations extend through the residual of central panel material. Methods and apparatus are also provided for forming the vent disc with the perforations and depressions therein.

Abstract: A drinking cup assembly including a cup having an open end; a cap adapted to enclose the open end, the cap including a drinking spout and an air vent and mating surfaces adjacent or incorporated into the drinking spout and the air vent; and a flow control valve including two stacks adapted to engage the mating surfaces, each of the two stacks having a concave valve face at a top portion thereof.

Abstract: A straw assembly has a flexible first segment with at least one longitudinal glide ridge extending inwardly from a drinking end thereof, a retaining shoulder at a fixed distance from the drinking end, and an orienting finger extending from the retaining shoulder.

Abstract: A nipple for use with a baby bottle includes a flange having an upper surface, a lower surface, a cavity formed in the flange and through the lower surface, and a membrane formed in the flange above the cavity and through the upper surface. The cavity is contiguous with the membrane. The membrane has a perforation therethrough to form at least two resealable lips in the membrane. Preferably, the two resealable lips have an X-shape.

Abstract: A holder assembly, for use with disposable baby feeding liners, includes a holder having a longitudinal slot and a member. The member has a disk and a finger-operated attachment joined to the disk at a single location. The attachment engages the longitudinal slot to mount the disk slidably within the holder. The attachment is readily adapted to assembly and disassembly. The holder, preferably, has a dual set of markings for determining the volume of liquid entering into the liner and the volume of liquid remaining in the liner as the baby is feeding.