BEVERAGE CAN AIR INTAKE SEAL

OPERCULE D'ADMISSION D'AIR POUR CANETTE

English Abstract

In the addition of a secondary seal to a beverage can, with the
objective to allow air in as the beverage is dispensed, it is known that, when
positioned accordingly, its activation will enable the smooth pouring of the
given liquid. In this invention, a secondary seal is added to the design of
beverage cans. The seal may be positioned in several areas on the can
whereby it is to remain functional. The secondary seal is to be pressed from
and attached to (respectively) both the lid and the tab of the can in such a
way that when the tab is pulled the rupture of the secondary seal results.

Claims

CLAIMS:

The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:

1. The addition of a secondary seal scored/pressed from the sheet material
of a beverage can for the purpose of allowing airflow into the can to
replace volume left by draining fluid.
2. The beverage can addition as claimed in Claim 1, wherein said addition
is fastened to the pull tab or similar device.
3. The beverage can addition as claimed in Claim 1, wherein said seal is
produced with varying size and shape in accordance to desired
intake/discharge capabilities of the product.
4. The beverage can addition as claimed in Claim 1, wherein the engineered
design of said seal is such that the seal ruptures at desired pressure
according to the structural resistance and issues of (Claim 2, Claim 3,
Claim 4) of the materials used in the fabrication of the embodiments.

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Description

CA 02280461 1999-08-11
SPECIFICATION
This invention relates to a manually operated secondary seal, made of
sheet material, for the purpose of enabling a beverage can to be poured more
smoothly and have a more rapid rate of discharge.
It is a requirement of a beverage can tab to open a scored mouthpiece
for the purpose of allowing a beverage to be dispensed. The presence of
only one seal, however, is ineffective for the reason that when the beverage
is poured there is not sufficient space for air to enter the can to replace
the
liquid and maintain constant pressure. This is the reason that cans 'chug' as
they are poured from resulting in messy spills and poor drainage capacities.
They are unsatisfactory to drink from for these reasons.
I have found that these disadvantages may be overcome by providing
a secondary seal or score lined opening. It is to be pressed from the can lid
and riveted to the tab. The seal is to be located on the most elevated side of
the can lid, in a way that pose's the least compensation to the can's function
(e.g. so that it is unlikely to become plugged with the contents of the
container or be obstructive when opening). This seal would enable airflow
into the can increasing liquid flow from the container. It is a cheap to
produce gimmick with a function, in turn extremely attractive to potential
investors. Preliminary experiments prove that, with an air intake,
conventional cans poor and drain with a rate that is exponentially relative to
the area of the secondary opening.
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CA 02280461 1999-08-11
DRAWINGS
In these drawings which illustrate embodiments of the invention,
Figure 1: is an aerial view and visual explanation showing the approximate
location of the secondary seal.
Figure 2: is a section of line III-III of Figure 1 to present a profile of the
given seal.
Figure 3: is an illustration to present the basic function of the added seal.
The invention "A" illustrated within the circles of interest comprises
seal "1" of the same body of rivet "2". Seal "1" lies flush with can lid "Y"
and is the main feature to the innovation. Invention "A" is scoredlpressed
from and is an entity of can lid "Y" (before breakage of seal) fastened to and
operated by tab "X". Score line is located at the junction line of "1" and
"Y". In Figure 3 "r' represents the inward flow of air to fill the volume "V"
(within can) left by draining fluid "II" as explained in Claim 1 where "V" is
relative to the flow of "II".
The embodiment of the invention "A" may vary in size, shape and
location in accordance to the requirements of varying beverages and can
designs whereas the same function is served. These drawing in no way
imply the invention of a seal or riveting process but enclose the intellectual
innovation of a additional opening with the purpose explained in Claim 1.
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Representative Drawing