Nipple assembly and package

Claim 2

In an assembly of an elastic dispensing nipple and a disc therein adapted for securement on the entrance mouth of a rigid container to form a sealed package, the nipple having a discharge end with an orifice therein and a hollow open-end base for sealing securement against a sealing surface of the container entrance mouth and an inwardly open annular recess in the nipple base for overlying an upwardly facing sealing surface on the container, and said disc being disposed transversely across the nipple with an annular rim portion of the disc supported in the said nipple recess, the improvement comprising: said nipple having a plurality of radial ribs on the undersurface of the top wall of the annular recess in the nipple base and extending inward from the outer wall of the nipple, and said disc having an annular rib and a plurality of radial ribs of lesser height in its annular rim portion, whereby, the nipple base can be axially compressed on a container entrance mouth to seal the disc in the nipple recess and, upon release of the axial compression, the radial ribs on the nipple recess and disc will provide passageways for flow of the contents of the container between the disc and the nipple recess to be dispensed through the orifice in the discharge end of the nipple.

Claim 3

An assembly as set forth in claim 1 in which radial ribs are provided on the upper surface of the bottom wall of the nipple recess extending inward from the outer wall of tHe nipple.

Claim 4

In a tamperproof hermetically sealed package including a rigid container for enclosing liquid contents and having upper and lower upwardly facing sealing surfaces adjacent the entrance mouth thereto, an elastic dispensing nipple having a discharge end with an orifice therein and a hollow open-end base permanently sealingly secured against the lower sealing surface of the container, and an inwardly open annular recess in the nipple base overlying the upper sealing surface of the container, a disc transversely disposed across the nipple with an annular rim portion of the disc supported in the nipple recess, and a substantially inelastic shroud enclosing the base of the nipple and secured to the container, said shroud engaging the exterior surface of the container in axial compression of the nipple base to seal said disc in the nipple recess, the improvement comprising: said nipple having a plurality of radial ribs on the undersurface of the top wall of the annular recess in the nipple base and extending inward from the outer wall of the nipple which configuration promotes elimination of molding defects in this critical area during molding of the nipple, and said disc having an annular rib and a plurality of radial ribs of lesser height in its annular rim portion, whereby upon release of the axial compression of the nipple base, the radial ribs on the nipple recess and disc provide passageways for flow of the container''s contents between the disc and the nipple recess to be dispensed through the orifice in the discharge end of the nipple.

Claim 5

In a tamperproof hermetically sealed package including a rigid container for enclosing liquid contents and having upper and lower upwardly facing sealing surfaces adjacent the entrance mouth thereto, an elastic dispensing nipple having a discharge end with an orifice therein and a hollow open-end base permanently sealingly secured against the lower sealing surface of the container, and an inwardly open annular recess in the nipple base overlying the upper sealing surface of the container, a disc transversely disposed across the nipple with an annular rim portion of the disc supported in the nipple recess, and a substantially inelastic shroud enclosing the base of the nipple and secured to the container, said shroud engaging the exterior surface of the container in axial compression of the nipple base to seal said disc in the nipple recess, the improvement comprising: said nipple having a plurality of radial ribs on the undersurface of the top wall of the annular recess in the nipple base and extending inward from the outer wall of the nipple which configuration promotes elimination of molding defects in this critical area during molding of the nipple, and said disc having an annular rib and a plurality of radial ribs of lesser height in its annular rim portion, whereby upon release of the axial compression of the nipple base, the radial ribs on the nipple recess and disc provide passageways for flow of the container''s contents between the disc and the nipple recess to be dispensed through the orifice in the discharge end of the nipple.

Claim 6

A package as set forth in claim 3 in which radial ribs are provided on the upper surface of the bottom wall of the nipple recess extending inward from the outer wall of the nipple.