U.S. patent application number 10/153019 was filed with the patent office on 2003-11-27 for tamper indicating closure.
Invention is credited to Pehr, Harold T..
Application Number | 20030217987 10/153019 |
Document ID | / |
Family ID | 29548581 |
Filed Date | 2003-11-27 |
United States Patent
Application |
20030217987 |
Kind Code |
A1 |
Pehr, Harold T. |
November 27, 2003 |
Tamper indicating closure
Abstract
A tamper indicating closure for a container wherein the closure
has a skirt with tamper indicating tabs positioned in windows and
the tabs have lips for abutting a bead on the container so as to
break the tabs from the closure when the closure is removed from
the container. Each tab being joined to a skirt of the closure by
one or more side connectors and not being connected or joined in
anyway to the skirt by an upper surface of the tab so as to resist
reseating of the tab in its original position when the closure is
replaced on the container.
Inventors: |
Pehr, Harold T.; (Shawnee
Mission, KS) |
Correspondence
Address: |
John C. McMahon
P.O. Box 30069
Kansas City
MO
64112
US
|
Family ID: |
29548581 |
Appl. No.: |
10/153019 |
Filed: |
May 21, 2002 |
Current U.S.
Class: |
215/252 |
Current CPC
Class: |
B65D 41/3447
20130101 |
Class at
Publication: |
215/252 |
International
Class: |
B65D 041/34 |
Claims
What is claimed and desired to be secured by Letters Patent is as
follows:
1. A tamper indicating cap for use with a container wherein said
cap is adapted to close a mouth to an interior of the container and
wherein the container has container threads in close proximity to
the mouth thereof; said cap comprising: a) a top wall with a skirt
extending substantially perpendicularly from said top wall and
having mating threads thereon adapted to threadedly mate with said
container threads; b) said cap being adapted for sealing engagement
with said container mouth; and c) at least one tamper indicating
tab initially integrally joined with said skirt by at least one
frangible side connector that operably breaks and allows said tab
move away from the original position of such tab relative to the
skirt, when said cap is removed from the container; each of said
tabs having an upper edge and being free of connection with said
skirt entirely along said upper edge.
2. The cap according to claim 1, wherein: a) each of said tabs is
positioned at the base of said skirt.
3. The cap according to claim 2, wherein: a) each of said tabs
includes a lower lip that projects radially inward and is sized and
shaped for substantially non-flexible engagement with a portion of
the container so as to bias such a tab away from said skirt when
said cap is removed from the closure.
4. The cap according in claim 2, wherein: a) said tabs are
originally joined to said skirt by first and second breakable
connectors located on opposite sides of such a tab.
5. The cap according to claim 4 wherein for each said tab: a) said
first connector is comparatively stronger than said second
connector, such that said second connector preferentially breaks
first upon said cap being removed from the container and such that
an associated tab first rotates outward about a generally vertical
hinge formed by said first connector, when said cap is removed from
the container.
6. The cap according to claim 1 in combination with the container
and wherein: a) said container includes a seating bead positioned
to engage each tab lip when said cap is positioned fully on said
container in a mouth closing orientation.
7. A tamper indicating apparatus including: a) a container having
an internal cavity that is closed except at a mouth thereof; said
container including an external container thread in close proximity
to said mouth and a seating bead; b) a cap having a top wall with
an under surface sized and shaped to seal said mouth when said cap
is fully received on said container and a skirt depending from said
top wall; said skirt having an internal mating thread that is
sized, shaped and positioned to mate with said container thread and
operably advance said cap onto said container and secure the cap
relative to said container; c) said skirt having at least one lower
window located therein; and d) said skirt also having at least one
tamper indicating tab that is sized and shaped to initially fit
into a respective window; each of said tabs having first and second
opposed and frangible side connectors; each as said first and
second side connectors breakably joining a respective tab to said
skirt; each of said tabs having an upper surface that is free of
connection to said skirt along an entire length thereof; each of
said tabs also having a radially inward projecting lip that is
sized and shaped to engage said seating bead when said cap is fully
received on said container, such that when said cap is thereafter
removed from said container, said lip hooks on said bead and biases
an associated tab away from said skirt so as to break at least one
of said first and second connectors and urge said tab out of a
respective window.
8. The apparatus according to claim 7 wherein: a) each of said
first connectors is sized and shaped to preferentially break first
before an associated second connector.
9. In a closure cap for a container having a tamper indicating tab;
the improvement comprising: a) said tamper tab being joined to a
remainder of said cap by at least one side connector and having an
upper surface that is completely free of and unjoined to the
remainder of said cap so as to prevent said tab from being hinged
to a remainder of said cap by said upper surface.
Description
BACKGROUND OF THE INVENTION
[0001] The present invention relates to a tamper indicating
mechanism for a container closure or cap and, in particular, to
tamper indicating tabs that are separated from a remainder of the
cap when the cap is first opened so as to indicate to subsequent
potential users that the associated container has been previously
opened and perhaps tampered with.
[0002] Screw on type caps are used for containers and bottles
dispensing a wide variety of liquids, such as carbonated beverages,
medicants and water. With growing concerns associated with
tampering, it has become important to be able to easily determine
whether the cap has been previously removed, so as to warn a
potential user that the product in the container may have been the
subject of tampering.
[0003] Prior art caps have included tamper indicating tabs that
hinge or hang from an upper connector and that have an inwardly
directed flange or bead that engages the threads of the container
as the cap is unscrewed, so as to push the lower end of each tab
outwardly. In this way, the lower side of the tab protrudes outward
as the cap is removed and this is intended to indicate that the cap
has been previously removed. The problem with such devices has been
that the tabs remain connected to the cap by an upper hinge that
allows for easy repositioning of the tab when the closure is
replaced on the container. Such tabs may even easily rotate on the
top connector back to their original position due to gravity. Thus,
a tamperer can remove the cap, tamper with the contents, replace
the cap and then push the tabs back to their original position or
the tabs may fall back to their original position. Even though the
tabs may be broken loose on the sides, they simply fold back into
place and are held by the upper hinge like connector in that
position, so as to give the erroneous impression to the casual
viewer that the cap has not been previously opened.
SUMMARY OF THE INVENTION
[0004] A screw on closure or cap for a container has a depending
skirt with at least one tamper indicating tab that is connected to
the cap by breakaway or frangible side elements or connectors so
that, when the cap is unscrewed from the container, the tabs break
from the cap and cannot be easily returned to their original
position. Where it is necessary for environmental reasons to retain
the tabs with the closure, it is foreseen that one side connector
can be made heavier or stronger, so the tab swings to the side of
an opening therefore on the heavier connector when the lighter
connector breaks, so that gravity does not cause it to reset when
the cap is replaced on the container. Further, the heavier
connector can be constructed to allow only a single flexure to the
side and, so that even the heavier connector will break due to
fatigue, if returned to an original window site for the tab.
[0005] Each tab includes a lower radially inward lip that is sized
and positioned to engage a bead on the container, so that the tab
is biased or pushed radially outward and downward relative to the
skirt of the closure, when the closure is removed from the
container. The outward movement of the tab breaks the side elements
or connectors, so that the tab preferably fully separates from a
remainder of the cap. Each tab is free of an upper hinge element or
any connection of any kind along the entire upper surface thereof
relative to the remainder of the cap, so that the tab does not
remain connected by such a hinge element, so that the tab does not
simply swing back down into a window therefor, if the cap is
replaced.
OBJECTS AND ADVANTAGES OF THE INVENTION
[0006] Therefore, the objects of the present invention are: to
provide a closure for a container with a tamper indicating tab that
is not subject to easy replacement in a window in which the tab is
initially located, when the closure is replaced on the container,
so as to visually indicate to a subsequent user that the closure
has been previously opened; to provide such a closure wherein each
tab is connected to the closure by a frangible or breakable
connector element that is broken as the closure is opened; to
provide such a closure wherein each tab is not connected by a top
surface thereof to a remainder of the closure, but only by at least
one side connector element along a side thereof; to provide such a
closure wherein the tab has a lower lip or cam that engages a bead
located on the container when the closure is opened so as to urge a
lower end of the tab radially outward and break the frangible
connector element connecting the tab to the closure; and to provide
such a closure that is easy to manufacture, relatively inexpensive
to produce and especially well suited for the intended purpose
thereof.
[0007] Other objects and advantages of this invention will become
apparent from the following description taken in conjunction with
the accompanying drawings wherein are set forth, by way of
illustration and example, certain embodiments of this
invention.
[0008] The drawings constitute a part of this specification and
include exemplary embodiments of the present invention and
illustrate various objects and features thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a fragmentary perspective view of a bottle with a
closure cap having tamper indicating tabs in accordance with the
present invention.
[0010] FIG. 2 is an enlarged and fragmentary front elevational view
of a portion of the cap and one of the tamper indicating tabs.
[0011] FIG. 3 is a cross sectional view of the cap and the tamper
indicating tab shown in FIG. 2, taken along line 3-3 of FIG. 2.
[0012] FIG. 4 is a fragmentary perspective view of the bottle
showing installation of the cap.
[0013] FIG. 5 is a fragmentary perspective view of the bottle with
the cap installed thereon.
[0014] FIG. 6 is a cross sectional view of the bottle and cap,
taken along line 6-6 of FIG. 5.
[0015] FIG. 7 is a cross sectional view of the bottle and cap
similar to FIG. 6 except showing the tamper indicating tabs
breaking away upon opening the cap.
[0016] FIG. 8 is a perspective view of the cap showing one of the
tamper indicating tabs broken therefrom.
DETAILED DESCRIPTION OF THE INVENTION
[0017] As required, detailed embodiments of the present invention
are disclosed herein; however, it is to be understood that the
disclosed embodiments are merely exemplary of the invention, which
may be embodied in various forms. Therefore, specific structural
and functional details disclosed herein are not to be interpreted
as limiting, but merely as a basis for the claims and as a
representative basis for teaching one skilled in the art to
variously employ the present invention in virtually any
appropriately detailed structure.
[0018] The reference numeral 1 generally indicates a tamper
indicating cap or closure utilized in conjunction with a container
or bottle 2.
[0019] The bottle 2 is especially adapted to hold food, beverage or
medicinals for human consumption or intake, wherein it is desirable
to ensure that the contents of the bottle 2 have not been subjected
to tampering, either by addition of poison or some other dangerous
substance or to ensure that the contents have not been depleted or
at least partially removed and possibly replaced by something else
resulting in less potency, especially with respect to medicine. The
bottle 1 comprises a fully enclosed and sealed body 5 with an
internal cavity 6 opening to the outside only through a mouth 7 at
the distal end of a neck 8 of the bottle 1.
[0020] A seating bead 15 extends circumferentially about the bottle
neck 8 in spaced relation to the mouth 7. Located between the bead
15 and the mouth 7 is a helically wound bead or threadform 16. The
threadform 16 extends radially outward from the neck 8. The
threadform 16 extends downward from near a top surface 18 of the
bottle neck 8 to near the bead 15.
[0021] The closure 1 has a circular top wall 20 with a periphery 21
from which depends a generally cylindrically shaped ring or skirt
21. The illustrated skirt 21 has a plurality of vertically
extending grooves 22 that provide additional traction or friction
to a user trying to open or close the closure 1.
[0022] As is best seen in FIG. 6, the skirt 21 has an interior that
has generally cylindrical shaped surface 25. Intermediately mounted
on the skirt interior surface 25 is a mating bead or threadform 26
which is sized and shaped to matingly and threadedly engage the
threadform 16 so as to advance the closure 1 onto the bottle 2 and
secure the closure 1 on the bottle 2. The threadforms 16 and 26
allow the closure 1 to also be removed form the bottle 1 by
counterclockwise unscrewing of the closure 1, as is shown in FIG. 7
and described further below.
[0023] When the closure 1 is fully screwed on the bottle neck 8, as
is shown in FIG. 6, the bottle top surface 18 engages and seals
against an inner and lower surface 29 of the closure top wall
20.
[0024] The illustrated embodiment includes two tamper indicating
tabs 35 mounted along a lower edge 36 of the closure skirt 21 in
spaced relationship to one another. While two such tabs 35 are
shown in the illustrated embodiment, it is foreseen that one or
more than two could be used in accordance with the invention.
[0025] Each of the tabs 35 are mounted in a respective window 37 at
the lower end of the skirt 21. Each of the windows 37 is slightly
larger than the respective tab 35 that goes into the window 37 so
as to form a channel or gap 38 around opposite sides and the top of
each tab 35. In particular, the gap 38 has a left segment 40 on a
left side (as viewed in FIG. 2), a top segment 41 at the top of
each tab 35 and a right segment 42 on a right side thereof. Each
tab 35 is joined to the skirt 21 by a first break off element or
connector 45 passing through the left gap segment 40 and a second
break off element or connecter 40 passing through the right gap
segment 42, although it is foreseen that only one could be used or
more than one connector could be used on each side. Thus the gap 38
is discontinuous on the left and right, but continuous or non
joining to the skirt 21 with respect to a top surface 47 of each
tab 35. Preferably, one of the connecters 45 or 46, here connecter
45, is larger or wider than the other, so as to be stronger.
[0026] An inwardly projecting bead or lip 50 extends radially
inward from near a bottom edge 51 of each tab 35. Each lip 50 has
an angular radially inward surface 52 to facilitate placement of
the closure 1 on the bottle 2 and a generally flat upper surface
53. Each lip 50 thus forms a hook like structure that is sized and
shaped to grasp around and hook the bottle seating bead 15, as is
shown in FIG. 6.
[0027] The closure 1 is initially normally installed on the bottle
2 by use of a commonly utilized caping machine 55 that is partially
shown in FIG. 4 and that has a sleeve 56 that is sized to snugly
hold and encircle the closure 1, as the closure 1 is screwed onto
the bottle 2. This allows the inward lip surface 52 to somewhat
elastically deform and slip over the bead 15 to the position shown
in FIG. 6 without breaking the connectors 45 and 46. The sleeve 56
is then removed, as shown in FIG. 5.
[0028] When a user 60 thereafter attempts to remove the closure 1
from the bottle 2, as shown in FIG. 7, the user 60 starts to
unscrew the closure 1 by counterclockwise rotation thereof. The
lips 50 of the tabs 35 grasp or hook on the bead 15 and resist
removal. This causes one or both of the connectors 45 and 46 to
break due to tensile and radial forces that pull downward and
outward on the tabs 35 relative to the skirt 21, as the closure 1
unscrews form the bottle 2. These forces act to break at least one
of the frangible and breakable connectors 45 and 46.
[0029] Shown in FIG. 8 is a tab 35 broken form the skirt 21. A pair
of tabs 35 are seen breaking form the skirt 21 in FIG. 7. As the
tabs 35 are not connected in any way by the tab top surface 47, the
tabs 35 do not hinge at the top relative to the skirt 21 and either
break entirely from the skirt 21 or rotate to the side of a
respective window 37, so that the tabs 35 do not later easily fall
due to gravity or the like back into a respective window 37, when
the closure 1 is returned to the bottle 2 by a user 60.
[0030] As was noted above, the connecter 45 may be larger than the
connecter 46 so that the connecter 46 selectively breaks and the
connecter 45 holds the tab 35 to the side of a respective window
37, where dispersal of such tabs 35 is environmentally unwanted or
undesired. The tabs 35 thus swing sideways when they remain joined
to the skirt 21 by the connecter 45 and do not fall back into place
due to gravity or the like when the closure 1 is returned to bottle
2.
[0031] It is to be understood that while certain forms of the
present invention have been illustrated and described herein, it is
not to be limited to the specific forms or arrangement of parts
described and shown.
* * * * *