U.S. patent number 3,701,454 [Application Number 05/159,651] was granted by the patent office on 1972-10-31 for easy opening container closure.
This patent grant is currently assigned to American Can Company, Greenwich, CT (U.S. corp.). Invention is credited to Richard Conrad Thorp.
United States Patent |
3,701,454 |
|
October 31, 1972 |
EASY OPENING CONTAINER CLOSURE
Abstract
An easy-open end closure for attachment to a container body is
provided which has a top panel, a peripheral depending skirt, a
pair of score lines defining a partial opening closure section
which includes a portion of the skirt and a portion of the top
panel, a tab connected to the section for tearing the partial
opening section along the score lines to provide a limited opening
through the closure, another pair of score lines defining a full
opening closure section which includes a portion of the skirt and a
portion of the top panel, and another tab connected to the full
opening closure section for tearing the same along the other pair
of score lines to effect removal of the entire end closure from the
container.
Inventors: |
Richard Conrad Thorp (Crystal
Lake, IL) |
Assignee: |
American Can Company, Greenwich, CT
(U.S. corp.) (N/A)
|
Family
ID: |
22573419 |
Appl.
No.: |
05/159,651 |
Filed: |
July 6, 1971 |
Current U.S.
Class: |
220/270; 426/123;
222/541.9 |
Current CPC
Class: |
B65D
17/4012 (20180101) |
Current International
Class: |
B65D
41/00 (20060101); B65d 017/20 () |
Field of
Search: |
;220/54,27,47 ;215/46A
;222/541 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: George T. Hall
Attorney, Agent or Firm: Robert P. Auber et al.
Claims
1. An end closure for a container comprising a top panel, a
peripheral side wall connected to said panel and extending
therefrom to receive an open end of a container body, a first score
pattern defining a first tear section including a portion of said
side wall and a portion of said panel, first tab means connected to
said side wall portion and adapted to be grasped for tearing said
first tear section along said first score pattern, said panel
portion being great enough to permit removal of the entire closure
from a container body when said first tear section is torn along
said first tear pattern, a second score pattern defining a second
tear section including another portion of said side wall and a part
of said panels and second tab means connected to said other side
wall portion to be grasped for tearing said second tear section
along said second score pattern, said second tear section when torn
along said second score
2. The closure according to claim 1 wherein said part of said panel
extends
3. The closure according to claim 2 wherein said first and second
tab means
4. The closure according to claim 1 wherein said side wall is
cylindrical, and said first and second tab means are disposed
substantially 180.degree.
5. The closure according to claim 4 wherein the closure is formed
of a
6. The closure according to claim 5 wherein said second tear
section is
7. The closure according to claim 5 wherein said first score
pattern includes a first pair of score lines extending from the
lower peripheral edge of said side wall, upwardly through said side
wall, and at least
8. The closure according to claim 7 wherein said first pair of
score lines extend across said top panel, around the peripheral
edge of said panel, and downwardly toward said lower peripheral
edge to a terminal point
9. The closure according to claim 8 wherein said score lines of
said first
10. The closure according to claim 9 wherein said second score line
pattern includes a second pair of score lines extending from the
lower peripheral edge of said side wall, across said side wall, and
partially across said
11. The end closure according to 10 wherein said second score
pattern includes a third score line connecting with said score
lines of said second pair whereby said second tear section is
detachable from said
12. In combination, a container body having peripheral bead means
at one end thereof, and an end closure attached to said body, said
end closure comprising a top panel, an annular, peripheral
depending shirt integral with said end closure, said skirt being
formed around said bead and having a bottom peripheral edge,
sealing means between said skirt and said bead to effect a seal
therebetween, a first score pattern defining a first tear section
including a first portion of said skirt and a first portion of said
top panel, first tab means connected to said first skirt portion at
said bottom peripheral edge thereof and adapted to be grasped for
tearing said first tear section along said first score pattern,
said first tear section being proportioned to permit removal of the
entire end closure from said container, when torn along said first
score pattern, a second score pattern defining a second tear
section including a second portion of said skirt and a part of said
panel, and second tab means connected to said other portion of said
skirt and adapted to be grasped for tearing said second tear
section along said second score pattern to provide a
13. The combination according to claim 12 wherein said first tear
section includes another portion of said skirt at the terminal end
of said tear
14. The combination according to claim 12 wherein said second tear
section
15. The combination according to claim 14 wherein said first score
pattern includes a pair of score lines which diverge from one end
to the opposite of said first tear section and terminate in said
skirt on opposite sides
16. The combination according to claim 15 wherein said end closure
is a
17. The combination according to claim 16 wherein said first and
second tab means are integral with said skirt and are disposed
approximately
18. The combination according to claim 17 wherein said first and
second tab means extend downwardly substantially parallel with said
container body.
Description
This invention relates to easy opening container end closures and
more particularly to easy opening end closures which are scored to
provide tear sections for opening the container.
End closures or caps for containers, such as cans and bottles, have
been used which had a top panel and a peripheral skirt that was
rolled or crimped around a peripheral closure retaining bead at the
mouth or open end of the container body. One easy-open feature in
such closures has been a full-open, easy-open feature, that
included a pair of score lines in the panel and skirt, and a tab
associated with the score lines. The tab was adapted to be pulled
upwardly to tear the closure section between the pair of score
lines and permit the closure to be entirely removed from the
container body. Such a full-open feature allowed the mouth of the
container body to be fully revealed and accessible to the consumer.
There has been a need, however, for an easy-open feature for a
closure of this type which would allow the consumer to open, at his
option, either a portion of the mouth of the container body or the
entire mouth of the container body. Such a closure incorporating
means for both full-opening and partial-opening thereof, would
allow the consumer of a beverage, for example, to either drink,
pour, or spoon from a fully-opened container or drink or pour from
a partially-opened container.
Accordingly, it is a general object of the present invention to
provide a plural-opening container end closure having an easy-open
feature which permits the user to selectively, readily partially
open or fully open a container.
Another object of the invention is to provide a novel end closure
for a container wherein easy-open features are provided on the
closure enabling a consumer to selectively readily provide a
partial opening in the closure or readily remove the entire closure
from the container body.
Still another object is to provide a container body and end closure
therefor wherein the end closure has a pair of easy-opening
features that may be selectively operated to provide either an
opening of limited size or the removal of the end closure from the
container body.
In accordance with one aspect of the present invention an end
closure for a container is provided having an end wall, a
peripheral side wall for connection with a container body, a first
score line pattern defining a first tear section including a
portion of the end wall and a portion of the side wall, a tab
connected to the first tear section for tearing the same along the
first score line pattern, the first tear section when torn
providing a partial opening in the closure, a second score line
pattern defining a second tear section including a portion of the
end wall and another portion of the side wall, and another tab
connected to the second tear section for tearing the same along the
second score line pattern, the second tear section when torn
providing a full opening for the container.
These and other objects and advantages of the present invention
will become apparent from the following detailed description and
accompanying drawing wherein a preferred embodiment is shown.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of a container having a closure member
embodying the present invention;
FIG. 2 is a cross-sectional view taken along the line 2--2 of FIG.
1;
FIG. 3 is a fragmentary perspective view of the container of FIG. 1
but with the container opened by one of the easy open devices;
FIG. 4 is a fragmentary perspective view of the container of FIG. 1
rotated 180.degree. about the vertical axis thereof;
FIG. 5 is a fragmentary perspective view similar to FIG. 4 but with
a second easy-open device shown partially activated;
FIG. 6 is a plan view, on a reduced scale, showing layout of end
closures in phantom as formed from sheet material; and
FIG. 7 is a cross-sectional view, on a reduced scale of an end
closure of FIG. 1 before it is attached to a container body.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to drawings, and particularly to FIGS. 1 and 2, a
container 10 is shown for illustration including a container body
12, a bottom end closure 14, and a top end closure or cap 16.
The container body 12 is shown made of metal such as steel or
aluminum, although it could be made from plastic or glass where
desired. The bottom end 14 may be formed integrally with body 12 or
may be a conventional metal end attached to the bottom of the body
12 such as by rolling or double seaming it thereto.
As seen more clearly in FIG. 2, the body 12 is provided with an
upper necked-in portion 17 which has an inclined portion 18
extending radially inwardly and that connects with a vertically
extending portion 20. Connected to the portion 20 is a closure
retaining bead or curl 22 at the open mouth of the body 12.
The top end closure 16 is shown as a cap formed, for example, from
sheet metal, such as aluminum. The cap 16 has a top panel 24 which
is shown substantially flat, and a peripheral or annular depending
side wall or skirt 26 connected to the panel 24 at the peripheral
annular edge or corner bend 28 of the panel. The skirt 26 of the
illustrated cap 16, is a cylindrical depending skirt portion (FIG.
7) before it is attached to the upper open end or mouth of the
container body 12. As seen more clearly in FIG. 2, the skirt 26 is
shown crimped or rolled around bead 22. The inner side of the skirt
has attached thereto a suitable sealing material or gasket 30 for
hermetically sealing the container 10.
The closure 16 permits the consumer to select more than one type or
form of opening for removing the contents indicated at 32 in the
drawing. Cap 16 is provided with a pair of easy-open devices
indicated generally at 36 (FIG. 1) and 38 (FIG. 4).
As best seen in FIG. 1, easy-open device 36 includes a tear section
40 defined by a pair of score lines or grooves 41 and 42 extending
from the lower edge 44 of the cap 16 at one side of the cap, across
the skirt 26, and partially over the top panel 24 toward the
opposite side of the cap. The tear section 40 is shown also
including a score line 46 interconnecting score lines 41 and 42.
The easy-open device 36 also includes a downwardly extending pull
tab 45 connected to the tear section 40 at the lower edge 44 of the
cap. A pair of tear promoting notches 47 are provided in the skirt
26 immediately adjacent each side of the tab 45. The tab 45 has a
pull ring 48 integrally connected therewith. Thus, tear section 40
includes a portion of the top panel 24 and a minor portion of the
skirt 26 between score lines 41 and 42.
The score lines 41, 42 and 46 provide a score pattern such that
when it is desired to open the container 10 by utilizing easy-open
device 36, the pull ring 48 is grasped and pulled outwardly and
upwardly so that the tear section 40 is torn along these score
lines, which, in the embodiment shown, produce a relatively small
opening 50 in the panel 24, as seen in FIG. 3. In this case, the
entire easy-open device 36 including tear section 40 is removed
from the cap 16 while the remainder of the cap stays on the
container body 12.
The easy-open device 38, which is seen more fully in FIG. 4,
includes a tear section 52 defined by a pair of score lines 54 and
56 extending from the lower edge 44 of cap 16 across the skirt 26,
and preferably completely across the panel 24. Easy-open device 38
also includes a downwardly extending pull tab 58 connected to tear
section 52 at the lower edge 44 of the cap. A pair of tear
promoting notches 59 are formed in the skirt 26 immediately
adjacent each side of the tab 58. Tab 58 also has a pull ring 60
which is shown integrally connected thereto.
The score lines 54 and 56 of tear section 52 are shown extending
entirely across the panel 24, around the cap edge 28, and
downwardly partially across the skirt 26 at the opposite side of
the cap. In FIGS. 1 and 3 the score lines 54 and 56 are shown
extending down the skirt 26 but stopping short of the lower cap
edge 44.
With the score pattern shown defined by the score lines 54 and 56
in the drawing, pulling outwardly and then upwardly on pull ring 60
will effect tearing of tear section 52 out of the skirt 26 between
the score lines, and by pulling the tab 58 across the panel 24, the
tear section will be torn out of the plane of the panel, such as
indicated in FIG. 5. By continuing to pull tab 58 across the panel
24, tear section 52 will be torn completely across the panel 24,
around the edge or corner 28 and partially down the skirt 26 at the
opposite side of the cap where these score lines terminate. As the
tab 58 is further pulled in a direction away from the container,
the tear section 52 causes the remaining side sections of the cap
indicated at 64 and 66 which are integrally connected thereto by a
portion of the skirt 26 to be moved laterally away from each other
and off of the container bead. The side sections 64 and 66 are
integrally connected to the tear section 52 by a portion of the
skirt 26 adjacent the terminal ends of score lines 54 and 56. These
side sections 64 and 66 bend outwardly and remain with the tear
section 52 so that the entire cap 16 with its seal 30 is removed
from the container 10.
FIG. 6 illustrates a manner of punching and forming a plurality of
container caps 16 from sheet material 70. The caps are shown in
phantom layout with the tabs 45 and 58 of each cap diametrically at
opposite sides of the panel 24 to minimize waste material.
In FIG. 7 a cap 16 is shown in its completed form but before being
attached to a container body 12. During seaming or rolling of the
cap onto the mouth of the body 12, the tabs 45 and 58 are of course
flattened against the periphery of the body as indicated in FIGS. 1
and 4 where they are shown substantially vertical and parallel with
the body 12.
In the illustrated embodiment, the score lines 54 and 56 of the
full-open device 38 extend from the tab portion 58 (FIG. 4) and
diverge from one side of the cap to the other. The section 40 of
the partial-open device 36 is diametrically opposite easy-open
device 38, and extends into the tear section 52 of device 38. With
this arrangement when the partial-open ring 48 of tab 45 is
utilized to partially open the can or provide a limited opening, a
portion of tear section 52 is removed, as seen in FIG. 3. The
limited opening 50 in FIG. 3, is preferably less than half of the
area of the top panel. The opening 50 permits use of a straw in the
case where the product is liquid, such as a beverage or
semi-liquid, such as a frozen or semi-frozen consumable product.
The opening 50 may also be used where desired for pouring or
drinking.
When the entire cap 16 is removed by utilizing the easy-open device
38 the entire end of the container body is open and the container
bead 22 exposed. This full-open feature permits pouring, drinking,
or spooning of the product 32 from the container 10.
The cap 16 thus allows the consumer to select the form or type of
opening through which the contents can be removed.
Various score patterns are of course possible. Preferably, the
score lines 54 and 56, as in the illustrated embodiment, do not
extend entirely across the skirt at that side of the cap 16
opposite tab 58 (FIG. 1) so that when the cap is fully removed, the
sections 64 and 66 remain connected to the tear section 52, as
previously mentioned herein. The tear section 40 of the limited
access or partial-open device 36, of course, also remains with the
other portions of the cap so that all portions of the cap 16 can be
removed together when it is desired to use device 38.
It is thought that the invention and many of its attendant
advantages will be understood from the foregoing description and it
will be apparent that various changes may be made in the form,
construction and arrangement of the parts without departing from
the spirit and scope of the invention or sacrificing all of its
material advantages, the form hereinbefore described being merely a
preferred embodiment thereof.
* * * * *