U.S. patent application number 10/365152 was filed with the patent office on 2004-08-19 for easy opening venting and resealable container closure.
Invention is credited to Morrissey, Brian James, Morrissey, Gloria.
Application Number | 20040159665 10/365152 |
Document ID | / |
Family ID | 32849621 |
Filed Date | 2004-08-19 |
United States Patent
Application |
20040159665 |
Kind Code |
A1 |
Morrissey, Gloria ; et
al. |
August 19, 2004 |
Easy opening venting and resealable container closure
Abstract
A closure, set within an aperture of a container end wall, for
gas tight containment of dissociating gasses that emit from
carbonated beverage, whereby the container, such as a beverage
container, becomes pressurized. The closure device, manufactured of
a suitable plastic material, set within an aperture in a container
end wall, includes a rim seal with an annular locking recess
surrounding the aperture in the container end wall, providing a
liquid and gas-tight seal. The rim seal includes a depending
tapered inner wall, protruding into the container interior, with
the larger diameter open to the container interior. Additionally,
the rim seal is fitted with a narrow strip hinge on a lower aspect,
and locking members located on an upper aspect. A sealing panel,
having a small diameter gas vent hole, is set within the rim seal,
connected by the narrow strip hinge. This panel is formed with a
tapered outer depending wall with a like taper to the rim seal,
such that the tapers cooperate in sealing engagement. Pressure
within the container acts to compress the underside of the sealing
panel and more tightly engage the tapers, providing a gas-tight
seal. A tab member is connected to the sealing panel on an upper
aspect. Lifting the tab separates the sealing relationship with the
gas vent hole, exhausting the pressurized gas under the tab cover,
resulting in dry venting. The tab also acts as a lever, to rotate
the sealing panel from a horizontal sealing position within the rim
seal, to an open position, secured within the container interior,
thereby providing a pour opening. Returning the sealing panel to an
original position within the rim seal, and repositioning the tab to
a sealing relationship with the gas vent hole, reseals the
container, providing a gas tight seal.
Inventors: |
Morrissey, Gloria;
(Newburgh, IN) ; Morrissey, Brian James;
(Newburgh, IN) |
Correspondence
Address: |
G. MORRISSEY
7499 UPPER MEADOW RD.
NEWBURGH
IN
47630
US
|
Family ID: |
32849621 |
Appl. No.: |
10/365152 |
Filed: |
February 13, 2003 |
Current U.S.
Class: |
220/825 ;
220/260 |
Current CPC
Class: |
B65D 51/1683 20130101;
B65D 2517/5081 20130101; B65D 2401/15 20200501; B65D 17/506
20130101 |
Class at
Publication: |
220/825 ;
220/260 |
International
Class: |
B65D 043/14 |
Claims
What is claimed is:
1. A closure, set within an aperture of a container end wall, for
gas tight,containment of dissociating gasses that emit from
carbonated beverage, whereby said container, such as a beverage
container, becomes pressurize, said closure comprising, a
combination of a rim seal portion, having a means for forming a
seal-tight fit within an area defined by said container aperture,
having an internal opening incorporating a tapered depending wall
such that the larger diameter is open to said container interior,
having on an upper aspect a retaining means, and on a lower aspect
a means to pivotally attach a sealing panel; said sealing panel
having on an external periphery a depending wall with a
complementary taper to said rim seal, dimensioned to fit in sealing
engagement within said rim seal, located in a first sealing
position within and against said rim seal, and having a means to be
selectively rotated into a second stored position within said
container interior, forming a pour opening; a tab lift lever
connected to said sealing panel proximate one end on an upper
aspect, having a combination sealing-enclosing portion, a narrowed
central portion, and a distal flexible lifting portion.
2. A closure, as claimed in claim 1, including said closure being
composed of an elastomeric material.
3. A closure, as claimed in claim 1, wherein increasing pressure
building within said container is utilized to act upon said sealing
panel, compressing said tapers into a tighter sealing engagement
and preventing release of said pressurized gasses.
4. A sealing panel, as claimed in claim 1, wherein a small diameter
gas vent hole is located within said sealing panel, being covered
in a first sealing position by engagement with said sealing portion
of said tab lift lever, and selectively uncovering and
progressively releasing said pressurized gasses, by rotating said
tab lift lever into a second, opened position.
5. A tab lift lever, as claimed in claim 4, whereby rotating and
returning said tab lift lever to said first sealing position,
re-engages said sealing portion of said tab lift lever, such that
said small diameter gas vent hole is covered in a seal tight
configuration.
6. A tab lift lever, as claimed in claim 1, when rotated to a near
vertical position, a small downward force is applied, rotating said
sealing panel from within said first sealing position within said
rim seal into said second stored position within said container
interior, whereby a pour opening is available, and providing a
means to return said sealing panel into said first sealing position
within said rim seal.
7. A closure, as claimed in claim 1, having said rim seal retaining
means spread apart and snap back to capture and lock a portion of
said narrow central portion of said tab lift lever, whereby said
sealing panel, through said tab lift lever connection, may be
secured in a locked sealing position in a horizontal orientation,
and secured in a stored pour open position in a vertical
orientation.
8. A closure, as claimed in claim 1, wherein said enclosing portion
of said tab lift lever is adapted to overlie said small diameter
gas vent hole area, so any gaseous or liquid spray that may emit
from said high pressure gasses upon opening, is constrained and
shielded, providing dry venting.
9. A small diameter gas vent hole as claimed in claim 4, wherein
said small diameter gas vent hole is located in a position close to
said connection of said tab lift lever to said sealing panel, and
located away from, in relative relationship, said rim seal
retaining means, so as to produce a mechanical advantage at said
small diameter gas vent hole area, assisting in compressing said
sealing portion of said tab in a seal tight connection.
10. An enclosing portion, as claimed in claim 8, wherein said
enclosing portion lower surface, hidden until said container is
initially opened, becomes visible, and offers a location to display
promotional, or other messages, using methods well established to
advertise products or offer rewards or prizes.
Description
FIELD OF THE INVENTION.
[0001] The present invention relates to an end member of a
container, such as an aluminum beverage container, having an
aperture defining a pour opening set in an end wall of a container.
Such a container will be pressurize, caused by dissociating gasses
released from the beverage product, resulting in high pressure
gasses collecting within the container. Such gasses are required to
be contained to protect the freshness of the product.
BACKGROUND OF THE INVENTION
[0002] A search of prior art reveals many patents issued that
address the opening, venting and resealing of a container, such as
a beverage can. The benefits of a can containing these features
would eliminate having the contents splash or eject under pressure
during opening.
[0003] Once the can is open, if all the contents are not consumed,
any remaining beverage could be resealed, and remain fresh for
later consumption. This would eliminate the present practice of
disposing of the unconsumed contents, which is wasteful, and can be
inconvenient or inappropriate.
[0004] Numerous U.S. Pat. Nos. such as 4,008,832, 4,433,792,
4,442,950, 4,887,712, and 5,011,037 attest to the desire to provide
the public with the aforementioned features.
[0005] Various structures have been proposed, and prior art teaches
the incorporation of a central stopper positioned to work in
concert with a pour opening to create such a sealing device.
[0006] Examples of a few such patents would incorporate U.S. Pat.
No. 3,952,911, Bozek et al. disclosing a plastic rim, having an
annular groove seated about the marginal edges defining a pour
opening aperture, working in concert with a tab to provide sealing
of a container.
[0007] A similar method is disclosed in U.S. Pat. No. 4,580,692,
LaBarge et al. where a plastic sealing member is tightly inserted
in to a pour opening aperture, having a rupturable overlay at the
junction of the plastic sealing members forming an initial
seal.
[0008] Vogt, discloses in U.S. Pat. No. 3,952,914, a removable
plastic seal element set within the confines of the metal pour
opening aperture, and opening in toward the container interior, to
be raised back to an original position to effect a seal.
[0009] In U.S. Pat. No. 4,431,110 Roth disclose an upper hinged
plastic member, having a plug attached, that, on closing, inserts
the plug into an orifice set in a lower sealing member.
[0010] The foregoing examples disclose some of the efforts that
have been directed toward providing the public with a resealable
container.
PRIOR ART
[0011] Field of search.
[0012] Cl. 220-269, 272, 281, 339, 351.
SUMMARY OF THE INVENTION
[0013] The present invention provides a novel re-closure device for
a substantially liquid and gas tight sealing engagement, set within
an aperture defining a pour opening in a container end wall. Such a
container may contain carbonated beverages of various types.
Dissociating gasses being released from the beverage product can
result in a pressure of approximately 95 psi. within the
container.
[0014] It is an object of this present invention to provide a
substantially liquid and gas tight seal, and that this sealing
means be available for the initial sealing of a container, and for
subsequent resealing of the container, as described within the body
of this application.
[0015] It is an object of this invention to utilize the internal
pressure within a container to operate against, and place in
compression, the interior portion of a sealing member, thereby
providing a more effective seal.
[0016] It is an object of this invention to release the internal
pressure within a container prior to providing a pour opening in an
end wall of such a container.
[0017] Another object of this invention is to selectively contain
or release pressurized gasses within a container, and further to
provide a mechanism to secure portions of the device in a
horizontal sealed position, or a vertical pour open position.
[0018] It is a further object of this invention to control the
pressurized beverage spray that sometimes emits on opening such a
container, so as to enclose and direct this spray away from a
consumer.
[0019] Yet another objective of the present invention is to
separately produce a closure, of a suitable elastomeric material,
that can be inserted into an aperture set in the end wall of a
container, at an appropriate manufacturing operation.
[0020] A marketing advantage included in this device is that after
opening, a hidden surface on the underside of the device is
revealed for the first time, giving the opportunity to display
promotional, or other `instant winner` type messages
[0021] In a preferred embodiment, the closure device, manufactured
of a suitable elastomeric material, includes a rim with an annular
locking recess surrounding the marginal edges defining a pour
opening, such as to provide a substantially liquid and gas tight
sealing engagement. Such rim includes an internal narrow strip
hinge, located on a lower aspect of the rim, and locking members,
located on an upper aspect of the rim, as will be discussed in
greater detail hereinafter.
[0022] The rim includes a tapered inner wall, protruding within the
container body, with the larger diameter open to the container
interior.
[0023] A sealing panel, set within the aforementioned rim,
connected to the rim by the internal narrow strip hinge, having a
tapered outer wall with a like taper to the rim inner wall, such
that both elements cooperate in sealing engagement, one with
another. The rim and sealing panel could be constructed with one
member in a more elastic, and one member in a less elastic state,
so that compliance of fit would more easily be achieved. Of note is
the internal pressure acting to compress the internal area of the
sealing panel, forcing the tapered walls into tighter engagement,
providing a more efficient seal.
[0024] Notably, a small diameter gas vent hole is set within the
sealing panel, and an external hinge connects the sealing panel to
a tab member placed on the upper aspect of the sealing panel. The
tab member has four main parts, a rigid portion connected to the
external hinge, including a sealing means; a relatively flat
covering panel; a narrowed securing portion; and a distal flexible
portion forming a lifting end.
[0025] The tab, acting as a lever, supplies the means to manually
rotate the device between a closed, sealing position and an open,
pouring position.
[0026] With the tab in a closed, sealing position relative to the
sealing panel, a gas vent cover and gasket, located on a lower
aspect of the tab, covers and seals the previously mentioned gas
vent hole. The invention provides tab locks that secure the tab in
a closed, sealing position, and an open position, secured within
the interior of the container, whereby a pour opening is
available.
[0027] Grasping and lifting the flexible lifting end of the tab,
rotating about the external hinge, severs a tamper evident strip,
disengages the tab locks, and rotates the tab up and outward, away
from the container.
[0028] This action progressively separates the gas vent cover and
gasket from a sealing position over the gas vent hole, allowing gas
under high pressure to exhaust. Since the exhausting process occurs
as the tab is only slightly open, any pressurized liquid that could
erupt is contained under the covering panel portion of the tab,
shielding the consumer, providing a dry venting feature.
[0029] With the pressure released, using a small downward force on
the tab, the sealing panel is pushed into the container interior,
rotating about the internal strip hinge, forming a pour
opening.
[0030] Located at an approximate midpoint of the tab, the narrowed
portion interacts with the tab locks, which spread apart and snap
back when a small force is applied, to captured the tab within the
tab locks, securing the sealing panel in an open position. The
flexible lifting end of the tab, now protruding above the rim seal,
is in an arcuate position, reducing drinking obstruction while
offering a subsequent grasping opportunity.
[0031] Lifting the finger lift, and removing the tab from the tab
locks, the sealing panel is raised back into the rim seal, assisted
by the self guiding action of the tapers, engaging the tapered
walls in their original sealing position.
[0032] Rotating the tab around the external hinge toward the
container, and pressing down on the midpoint area between the tab
locks, causes the bulbous portion of the tab locks to spread apart
and snap back to capture the midpoint area, this rotation also
repositions the gas vent cover and compresses the gasket over the
gas vent hole, establishing a gas tight seal.
[0033] Subsequent dissociating gasses from remaining beverage
re-pressurize the container, once again acting to force the sealing
panel into tighter engagement within the rim seal, providing a gas
and liquid tight resealed container.
[0034] During the initial opening of the tab, the underside of the
tab, hidden to this point, becomes visible. A message can be
displayed on this space of the `instant winner` type, wherein a
message becomes available to the consumer. Such methods of
promoting and advertising are well known, and are frequently used
to offer messages under the sealing caps of plastic container
bottles containing beverage products.
BRIEF DESCRIPTION OF THE DRAWINGS
[0035] FIG. 1 is a partial plan view of a container end wall,
having in place the arrangement in accordance with this invention
in place.
[0036] FIG. 2 is a cross sectional illustration taken through line
`AA` showing the device in an unopened, sealed position.
[0037] FIG. 3 is a cross sectional illustration taken through line
`AA` and shown in a position approximately midpoint between a
closed, and an open position.
DETAILED DESCRIPTION OF THE DRAWINGS
[0038] FIG. 1 illustrates a partial plan view of a container 1 and
end wall 2, such as an aluminum beverage container, having a
permanently attached resealable device, manufactured of suitable
elastomeric components, incorporating the principles of this
invention.
[0039] Referring to FIGS. 1 and FIG. 2, a device of this invention
is shown positioned and attached to a beverage container 1, having
an end wall 2, and aperture 3.
[0040] Into this aperture 3 is inserted, in circumferential sealing
engagement, rim seal 5, having a depending wall engaging the
marginal edge defining the aperture 3, in an annular locking recess
4.
[0041] The inwardly open circumference of rim seal 5 is formed to
incorporate a taper 11, dimensioned such as to have the larger
diameter toward the container interior.
[0042] Rim seal 5 is provided with a narrow strip hinge 6, and tab
lock retaining members 7, of which more details will be provided
hereinafter.
[0043] Sealing panel 8 defines a sealing panel dimensioned to fit
in re-sealable engagement within rim seal 5, having a depending
outer wall with a like taper 11, to engage within tapered inner
wall on rim seal 5. Sealing panel 8 is attached to rim seal 5 by a
narrow internal positioned hinge 6, enabling sealing panel 8 to
rotate between a sealing position within rim seal 5, and into the
interior of container 1, to facilitate a pour opening. (FIG. 3) A
small diameter gas vent hole 9, is set within sealing panel 8.
[0044] A Tab member 12 is attached to sealing panel 8 by external
hinge 13 located on an upper aspect close to an edge.
[0045] Tab 12 has a thin cover member 17, overlaying a
circumferential portion of sealing panel 8, being made more rigid
in part through reinforcing spine 16, positioned on a lower aspect.
A gas vent cover 14 is formed integral with spine 16, having a
planar area located to cooperate with a similar planar area, on
sealing panel 8. Gas vent cover 14 is separated from sealing panel
8, by compressible sealing gasket 15. With sealing panel 8 and tab
12 located in a closed horizontal sealing position, captured within
tab locks 7, compressible sealing gasket 15 is in a state of
compression covering gas vent hole 9, effectively sealing and
preventing high pressure gasses from escaping.
[0046] Tab 12 is maintained in the above position through the
action of tab locks 7, having a bulbous inner end to allow
interaction with tab midpoint securing area 18, being spread apart
and snapping back over midpoint area 18, to capture, and lock tab
12.
[0047] The location of the tab locks 7, working in conjunction with
the location of external hinge 13, are designed to provide a
mechanical advantage at gas vent cover 14, assisting in multiplying
forces compressing compressible sealing gasket 15, over gas vent
hole 9.
[0048] A frangible tamper proof seal 19, of semicircular or similar
design to assist in starting a tearing apart action when tab 12 is
lifted, is positioned at the interface of an edge of rim seal 5,
and midpoint area 18 of the flexible lifting portion of tab 12.
[0049] Tamper proof seal 19 provides a visual indication that the
device has not been previously opened, and also provides resistance
feedback indicating it has not been previously torn apart.
[0050] The above description of the interacting members positions
relate to an original sealing configuration, and subsequent
re-sealing positions. (With the exception of the tamper proof
connection.)
[0051] Inherent in this design is the permanent attachment of the
device to the container end wall 2.
[0052] The opening operations will now be described.
[0053] Grasping and lifting the flexible finger lift 20, of tab 12,
tears apart the frangible tamper proof seal 19, and disengages
midpoint area 18, from under tab locks 7. As the rigid portion of
tab 12 is rotated about hinge 13 in a direction away from the
container end wall 2, the gas vent cover 14, and compressible
sealing gasket 15, begin to separate progressively from a sealing
position over gas vent hole 9, (FIG. 3) allowing the high pressure
gasses within container to be exhausted. This separation is
achieved with compressible sealing gasket 15 still in close
proximity to gas vent hole 9, providing a shielded area for the
exhausting gas, and any pressurized liquid that may erupt, under
the raising tab 12 and cover 17, thereby providing dry venting.
[0054] With the high pressure removed from sealing panel 8, it is
now is held in place by the frictional characteristics of the
tapered walls 11, and is easily separated by a downward force
applied to tab 12. Continuing to rotate tab 12 to an almost
vertical position, being used as a lever, slight downward force is
applied. This force is transferred through now open hinge 13, to
sealing panel 8. ( FIG. 3) Sealing panel 8 starts to rotate around
internal hinge 6, into the interior of container 1. During this
downward rotation, the midpoint area 18 of tab 12, is being
positioned adjacent tab locks 7, wherein a side force applied
toward the central axis of end wall 2, presses and locates the
midpoint area 18 into a captured and locked position within tab
locks 7. It will be noted flexible finger lift 20, located above
the container end wall 2, flexes into an arcuate position, away
from a drinking area, to present an unobstructed pour opening.
During the opening sequence as described above, the underside of
tab 12 becomes visible. This area, designated by the numeral 10
provides an area that can be used for promotional advertising, or
the `instant winner` games of chance, that are popular with
consumers.
[0055] Turning now to FIG. 3 the device of this invention is shown
in a midpoint position, and the following description describes
events after the tab 12 has been fully rotated into engagement
within tab locks 7, as mentioned above, and a pour opening has been
made.
[0056] To reseal the container, flexible finger lift 20, located
above the container end wall 2, providing a gripping opportunity,
is lifted and pulled from the central axis area of container end
wall 2.
[0057] This action disengages the midpoint area 18 from within tab
locks 7. Continuing to rotate tab 12, sealing panel 8 is lifted
into an original position within rim seal 5, assisted by the self
guiding action of the tapers 11. In this position, temporary
protection is provided against a liquid spill, or insect intrusion.
To reseal the container to provide a gas tight seal for longer
storage of the product, tab 12 is rotated towards the container end
wall 2, into an original, horizontal position, locked in place by
tab locks 7. This rotation repositions compressible sealing gasket
15, covering and re-sealing gas vent hole 9, and locates midpoint
area 18 over the tab locks 7. Pressing down on midpoint area 18
between the tab locks 7, causes the bulbous portion of the tab
locks 7 to be spread apart, and snap back to capture midpoint area
18. Thus tab 12 is secured in a locked, sealing position.
[0058] As before, dissociating gasses build pressure within
container 1, and act upon sealing panel 8 to more tightly engage
the tapered walls 11, providing a substantially liquid and gas
tight seal.
[0059] It will be apparent to those skilled in the art that the
sealing surfaces as described will remain usable through repeated
openings and closings of the container, and that, while the device
is illustrated as a circular shape, this is not material to the
device, as other shapes may be substituted.
[0060] The particular embodiments of the invention described above
for the purpose of disclosing and illustrating the principals
involved, are not intended to put limitations on the invention. It
may be apparent to those skilled in the art that various changes
may be made without departing from the spirit and principles of the
invention.
* * * * *