U.S. patent number 3,696,919 [Application Number 05/096,104] was granted by the patent office on 1972-10-10 for double container with mixing means.
This patent grant is currently assigned to Colgate-Palmolive Company. Invention is credited to Gilbert DeWayne Miles.
United States Patent |
3,696,919 |
Miles |
October 10, 1972 |
DOUBLE CONTAINER WITH MIXING MEANS
Abstract
The double container comprises an outer container having
positioned therein substantially centrally a smaller inner
container. Each mouth of both containers lie in approximately the
same plane. Additionally, both containers are closed by the same
single cap. The outer container may be longitudinally compressed so
that access to the inner container may be obtained due to the
elastomeric material with which at least the lower portion of the
outer container is constructed. The inner container may be removed
from its closed position to expose the contents therein to the
contents in the outer container all within the outer container.
Inventors: |
Miles; Gilbert DeWayne
(Ossining, NY) |
Assignee: |
Colgate-Palmolive Company (New
York, NY)
|
Family
ID: |
22255345 |
Appl.
No.: |
05/096,104 |
Filed: |
October 8, 1970 |
Current U.S.
Class: |
206/221;
215/DIG.8; 215/6; 604/416 |
Current CPC
Class: |
B65D
81/3222 (20130101); Y10S 215/08 (20130101) |
Current International
Class: |
B65D
81/32 (20060101); B65d 079/00 () |
Field of
Search: |
;128/272 ;215/6,1C
;206/47A ;150/.5 ;220/23 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
407,559 |
|
Mar 1934 |
|
GB |
|
1,274,634 |
|
Sep 1961 |
|
FR |
|
746,448 |
|
Mar 1956 |
|
GB |
|
574,779 |
|
Mar 1958 |
|
IT |
|
915,731 |
|
Jun 1954 |
|
DT |
|
1,382,399 |
|
Nov 1964 |
|
FR |
|
Primary Examiner: Schacher; Richard A.
Assistant Examiner: Grant; Edwin D.
Claims
What is claimed is:
1. A double container comprising an outer container having at least
the lower portion thereof constructed of elastomeric material, said
lower portion having a relatively smooth bottom and a relatively
smooth side wall; a section of that portion above the said lower
portion having flexible corrugations whereby the outer container
may be shortened lengthwise due to the said corrugations, said
container having a mouth, a closure mounted to close the mouth of
said outer container, an inner container, said inner container
being spaced from the sides and bottom of said outer container,
said inner container having a mouth at one end thereof, the mouth
of the outer container and the inner container extend in the same
longitudinal direction, said closure having depending means for
closing the mouth of said inner container, said lower portion being
of relatively thin flexible elastomeric material whereby the said
lower portion may be inwardly deformed when the outer container is
shortened lengthwise and the inner container may be grasped by
deforming the lower portion about the lower portion of the inner
container.
2. The double container of claim 1 wherein the outer container has
a cylindrical configuration.
3. The double container of claim 1 wherein the inner container has
a cylindrical configuration.
4. The double container of claim 2 wherein the inner container has
a cylindrical configuration.
5. The double container of claim 1 wherein the closure has a
depending skirt having screw means and the mouth of said outer
container has mating screw means whereby the closure may be screwed
onto the outer container.
6. The double container of claim 1 wherein the underside of the
closure has a plug means adapted to fit the mouth of the inner
container by friction fit.
7. The double container of claim 5 wherein the underside of the
closure has a plug means adapted to fit the mouth of the inner
container by friction fit.
8. The container of claim 1 having liquid material both in the
inner and outer containers.
Description
BACKGROUND OF THE INVENTION
Many liquid items are sold to the consuming public in containers.
Frequently, the liquid items consist of more than one ingredient.
In those situations where the liquid ingredients may be mixed at
the point of fabrication and packaging, no problem ensues when the
two liquids are mixed in a single container and sold in that
fashion. However, frequently, it has been found quite undesirable
to mix certain liquid ingredients at a point remote in time from
actual use. In such instances the mutually reacting liquid
ingredients must be kept separate until the time of use. It will be
appreciated that this will entail the need for one or more
containers to keep the liquids separate. Furthermore, the
containers containing the liquids that are to be mixed must have a
particular volume carrying capacity so that the liquids being mixed
are done so in desirable acceptable mutually benefiting quantities.
The problem of mixing two ingredients is also one to be reckoned
with as one of the containers would have to be of a size sufficient
to accommodate the liquid ingredients of the other container.
Barring this type of utilization it would be necessary to obtain
yet a third container into which all of the other ingredients may
be charged at the time and need for use. Additionally, if either of
these two methods are employed it will usually be advisable to
provide a means for accomplishing thorough mixing such as by a
paddle or the like. On the other hand, the container which has been
charged with all of the ingredients may have provision for sealing
it so that the container may be shaken in order to ensure a
complete mixing. In any event, both means of mixing require the
exposure of the liquid contents to the atmosphere prior to mixing
with all of the attendant difficulties arising therefrom.
Of fairly recent vintage have been the numerous efforts to provide
compartmented containers for two liquid ingredients which are
maintained in a separate condition until mixing is accomplished at
the time of need. There are numerous advantages attendant the use
of a single vessel to contain two or more liquid ingredients in a
separate condition until it is time to mix them. One especially
intriguing feature is the fact that it would not be necessary to
provide a special type of packaging unit to hold two containers as
a single container would carry both liquid ingredients. Other
advantages from such a device will obviously flow as one gives it
further consideration. Even with this type of further improvement
considerable difficulties are attendant the use thereof. For
instance, the problem of bringing the two ingredients together
while in a single container without opening the container to the
atmosphere is not easy. Various valving arrangements have been used
which require fairly expensive containers. Other arrangements in
connection therewith relate to the breaking of the inner container,
which may be made of glass, and thereby exposing the contents
therein to the liquid in the outer container. Broken bits of glass,
for instance, can pose certain other problems as would be obvious.
Therefore, it is quite clear that there is yet additional room for
inventive genious to provide a double container with mixing means
as is set forth in the instant invention.
SUMMARY OF THE INVENTION
The present invention relates to an outer container, generally, of
cylindrical configuration which is constructed of a synthetic
plastic material, for instance, an elastomeric material. The
central wall portions of the cylindrical container have a bellows
like configuration or a corrugated configuration. The utilization
of this type of wall is to permit the cylindrical container to be
compressed longitudinally with the corrugations or bellows becoming
ever more folded. A closure cap is screwed to the outer container.
Generally centrally located on the underside of the cap is a plug
which operates as a stopper for a cylindrically shaped inner
container of a diameter somewhat smaller than the diameter of the
outer container. The stated plug is utilized as a stopper for the
mouth of the inner cylindrical container.
DETAILED CONSIDERATION OF THE PRESENT INVENTION
FIG. 1 is a cross sectional view taken longitudinally of the
container of the present invention having liquid ingredients
therein.
FIG. 2 is the same type of cross sectional view of the container of
the present invention showing the container in a compressed
condition.
FIG. 3 shows the same cross sectional view with the lower portion
of the outer container being squeezed inwardly radially in order to
grasp the bottom portion of the inner container.
FIG. 4 is also a cross sectional view as the previous figures
wherein the inner container has now been removed from its stoppered
position.
Turning to the drawings, attention is directed to FIG. 1 which is a
longitudinal cross sectional view of the inner and outer containers
of the present invention. The outer container 11 is, generally, of
a cylindrical configuration having a bottom 12 and a side wall 13.
The outer container 11 has a large open mouth 14 as shown in FIG.
1. Near the top most portion of the container a screwthread 15 is
located which mates with the screwthread 16 of a closure 17 having
a depending skirt 18. Somewhat concentric with the depending skirt
18 is a plug 19 which may act as a stopper, as shown, for container
20 which has an open mouth 21. The leading edges of the mouth of
each of the outer container and inner container are shown to be in
a similar plane. Between the bottom 12 and the mouth 14 of the
outer container, the outer container 11 has an area of corrugations
22. The utilization of these corrugations will be discussed
below.
The inner container has a quantity of liquid 23 which may fill the
inner container substantially completely. The outer container has a
quantity of a liquid 24 which does not fill the outer container in
that area between the inner container 20 and the walls and bottom
of the outer container 11. Therefore, a head room space 25 is
located above the liquid. It has been found that the head space 25
should be at least as large in volume to accommodate the features
of the present invention as they are utilized and illustrated
below.
FIG. 2 describes the same type of view as in FIG. 1. In use, the
container 11 is compressed between the upper portion and the lower
portion by means of further folding the corrugations 22 to the
condition shown in FIG. 2. It will be seen therefrom that the
bottom 26 of the inner container 20 is not displaced to the same
extent from the bottom 12 of container 11 as is depicted in FIG. 1.
Furthermore, the head space 25 has been practically eliminated or
at least severely reduced.
Turning to FIG. 3 which is like FIG. 2 except for the collapsing of
the bottom and side walls of the container 11 by means of squeezing
between the fingers of one's hand in order to grasp the bottom
portion of the container 20. The compression is, of course,
continued. Once the bottom portion of the container has been
grasped through the bottom and side wall portion of container 11
the inner container 20 may be withdrawn from the stopper 19 thereby
exposing the mouth 21 of the inner container 20. At the same time,
the corrugations 22 resume their normal condition. Also, the head
space 25 is reestablished. The next step, of course, is to permit
the fluid contents 23 to intermingle with the fluid contents 24
which may be established by inverting the container of the present
invention and shaking same. After the contents have been mixed, the
cap 17 may be unscrewed from the outer container thereby providing
access to the contents in the outer container as well as the inner
container which contents have now been intermingled.
The material of fabrication of the outer container must be of a
sufficiently flexible nature whereby the outer container may be
compressed in the manner shown in FIG. 2 and must also have at
least its lower portion quite flexible so that the said lower
portion may be collapsed about the lower portion of the inner
container for retraction thereof from its closed position. It has
been found that materials such as polyethylene and polypropylene
are suitable in the fabrication of the present device. Other
materials may be used having elastomeric features.
The inner container may be more rigidly constructed, if desired, or
may also be fabricated of similar material.
The embodiment shown in the present invention depicts the
utilization of a screw closure for the outer container. While this
has been found to be efficacious, it is submitted that the screw
type coacting means for the outer container and closure may be
substituted with another type of locking means such as a friction
fit.
The respective mouths of the outer container and the inner
container as shown in the embodiment discussed in the above need
not have the specific configuration shown wherein the mouth has the
same internal diameter, for the most part, as the respective
containers. For various reasons, it is entirely within the purview
of the instant invention to provide the outer container with an
inwardly directed shoulder terminating in a neck having a mouth
therein. Likewise, the inner container may also have a contour
configuration which follows the outer container. On the other hand,
the inner container may be such that it is provided with an
inwardly directed shoulder with the neck terminating in a
relatively small mouth. In such an instance, the inner container
will have a larger volume for containing liquid contents than is
found in the embodiment shown.
While there have been shown and described particular embodiments of
the invention, it will be obvious to those skilled in the art that
various changes and modifications may be made therein without
departing from the invention, and, therefore, it is aimed to cover
all such changes and modifications as fall within the true spirit
and scope of the invention.
* * * * *