Container closure
OwnerAlrik C. Lindstrominventor
Life of this patent
Estimating the term…
Abstract
A closure for the mouth of a container includes a bottom part sealingly attachable to the mouth of the container, the bottom part having a central tubular portion projecting into and sealing with the container mouth. An upper part of the closure includes a cylindrical stopper portion which fits into the tubular portion and seals with at least one annular flange which is provided on the inner surface of the tubular portion.
Claims5
A closure means for containers such as bottles, jars and the like, having a mouth which is substantially cylindrical on the inside, said closure means comprising two separate main parts of plastic situated axially in tandem, one main part forming a bottom part which at its lower end is sealingly attachable to the mouth edge of a container, and having interiorly a central, axial tube-like sealing portion which extends downwardly into and seals with a container mouth when said bottom part is attached to a container, said tube-like portion having on its inner surface two axially spaced-apart resilient annular flanges each of which slopes downwardly and radially inwardly, the second main part forming an upper part having a central, axial, outwardly cylindrical sealing stopper portion which is introduced into the tube-like sealing portion such that said flanges grip and seal with the circumference of said stopper portion.
A closure means as in claim 3 wherein said lower part is resilient plastic such that fitting the upper part to the lower part can be done by pressing surfaces of the teeth of the upper part axially against surfaces of the splines, at least one of said surfaces being chamfered such that the teeth radially deform the splines and the corresponding portion of the lower part to such an extent that the teeth can snap past the splines to the locking position of the teeth.
A closure means as in claim 4 wherein said lower part is formed at its end edge facing the upper part with at least one easily sheared axial pin, carrying an axial locking tongue, the latter being inserted in a complemental axial pocket in the upper part, so that turning the upper part in relation to the lower part causes shearing of the pin.
Dependencies are inferred from the claim text.