Resealable gas impermeable sealing assembly
First Claim
1. In combination, a container having an open neck and a resealable sealing assembly that provides both an ex-factory sealing condition and a resealed condition for the container, the sealing assembly comprising:
- a foil engaging the neck and providing a primary seal in the ex-factory sealing condition;
a tubular spout surrounding and fitted to the neck;
an over cap having means for removable engagement with an outer wall of the spout;
a plug connected to the over cap, the plug having a base plate that is directly and immovably sealed to and supporting the foil in the ex-factory sealing condition, the base plate including a beveled edge that is adapted to sealingly engage within the neck in the resealed condition;
such that initial removal of the over cap and plug from the spout operates to rupture the foil; and
such that subsequent relacement of the over cap and plug on the spout operates to cause the beveled edge of the base plate to engage and seal the neck.
2 Assignments
0 Petitions
Accused Products
Abstract
Larger gas tight containers for products such as carbonated or pressurised drinks require a resealable sealing assembly. The gas leakage through the assembly in its ex-factory sealing condition determines the shelf life of the product. The present assembly provides a foil (8) across a neck (10) of the bottle. The foil is supported in the ex-factory sealing condition by a plate (4) of a plug (36) which depends from an over cap (4). The over cap is screwed to an outer wall of a tubular spout (6) that surrounds the neck (10) of the bottle. In the resealed condition the plug can be screwed deeper into the neck so that a secondary seal is formed between the plate and the neck.
16 Citations
7 Claims
-
1. In combination, a container having an open neck and a resealable sealing assembly that provides both an ex-factory sealing condition and a resealed condition for the container, the sealing assembly comprising:
-
a foil engaging the neck and providing a primary seal in the ex-factory sealing condition;
a tubular spout surrounding and fitted to the neck;
an over cap having means for removable engagement with an outer wall of the spout;
a plug connected to the over cap, the plug having a base plate that is directly and immovably sealed to and supporting the foil in the ex-factory sealing condition, the base plate including a beveled edge that is adapted to sealingly engage within the neck in the resealed condition;
such that initial removal of the over cap and plug from the spout operates to rupture the foil; and
such that subsequent relacement of the over cap and plug on the spout operates to cause the beveled edge of the base plate to engage and seal the neck. - View Dependent Claims (2, 3)
-
-
4. A primary/secondary sealing-assembly for fitting to the open neck of a container, comprising:
-
a hollow spout having a bottom portion for mounting on the open neck of a container;
a foil sealed to said spout, said foil having a top surface and a bottom surface providing a primary-seal for the open neck of the container when said spout is mounted on the open neck of the container;
an over-cap removable engaging a top portion of said spout; and
a plate connected to said over-cap and directly and immovably sealed to said upper surface of said foil, such that rotation of said over-cap in one direction relative to said spout operates to raise said over-cap and said plate and to shear-rupture said foil as said over-cap is removed from said spout, and such that subsequent replacement of said over-cap on said spout followed by rotation of said over-cap in a direction opposite to said one direction relative to said spout operates to lower said over-cap and said plate into a secondary-seal with the open neck of the container. - View Dependent Claims (5)
-
-
6. A method of providing both a primary-seal and a secondary-seal to a container having an open neck, comprising the steps of:
-
providing a hollow spout having an open top portion, an open intermediate portion, and an open bottom portion;
providing a thin foil having a top surface and a bottom surface;
sealed said top surface of said foil to said intermediate portion of said spout;
providing a plate having a bottom surface;
rotatably mounting said plate within said top portion of said spout;
securing said bottom surface of said plate to said top surface of said foil; and
mounting said bottom portion of said spout on the open neck of a container, such that said bottom surface of said foil provides a primary-seal for the open neck of the container, such that subsequent rotation of said plate in one direction relative to said spout operates to raise said plate and to shear-rupture said foil as said plate is removed from said spout, and such that replacement of said plate on said spout, followed by rotation of said spout in a direction opposite to said one direction, operates to lower said plate into a secondary-seal with the open neck of the container. - View Dependent Claims (7)
-
Specification