Note: Descriptions are shown in the official language in which they were submitted.
CA 02506726 2005-05-10
Field of Invention
The present invention generally involves instant cooling of portable drinking
liquid. More
particularly, the invention involves a cooling mechanism that can be inserted
by vaxious
30 means into a water bottle or other liquid container and be activated to
undergo an
endothermic reaction that will instantly cool any liquid inside the container.
The resulting
container and cooling mechanism combination allows for a portable liquid
container that
can be made cold without the addition of ice or the use of a refrigerator.
35 Background Art
This new version of a liquid container combines previous inventions such as a
typical
liquid bottle and the concept of the disposable cold compress (CA 2426516). A
bottle cap
with push-pull closure (CA 2037728) may be used as the drinking spout, but any
lid
mechanism will suffice. The concept of the cold compress patent (CA 2426516)
is
40 applied to the cooling mechanism, but modified in terms of structure and
contained
reactants. Other modifications may be added such as using a moldable material
for the
bottle that provides insulation to maintain the cold temperature of the liquid
after the
cooling mechanism has been activated.
45 Conventional drinking bottles sold in stores are rarely insulated resulting
in warming of
the liquid after it has been purchased and removed from the refrigerator.
Furthermore,
athletes attending sporting events must bring their liquid to games in big
coolers with lots
CA 02506726 2005-05-10
of ice to keep them cool until the desired drinking time, which can be an
inconvenience.
Our invention combines the aforementioned patents along with novel ideas to
create a
50 liquid bottle or container that can be activated any time after purchase to
instantly cool
the liquid inside.
An object of the invention is to provide the public with a way of having a
cold drink
without adding ice or using a refrigerator.
SS
It is a fiuther object of the invention to provide a liquid container into
which a cooling
device can be inserted or removed, if cooling the liquid is not desired.
Summyrv of the Invention
60 The invented cooling mechanism is designed for use with the invented liquid
container,
which contains one or more indentations (preferably on the bottom of the
liquid
container) into which the invented cooling mechanism can be inserted. The two
components should be sold as a unit, appearing as a regular liquid bottle with
the
exception of the base, which can be turned and pushed up slightly towards the
top of the
65 liquid bottle in order to activate the cooling mechanism. The liquid
container is in turn
designed to incorporate the cooling mechanism, whether it is at the bottom of
the liquid
container, through the spout, or on any other surface.
The liquid container is formed from any moldable material, preferably with
insulating
70 capacity that should be thinner around the indentation into which the
cooling device is to
be inserted, allowing for the liquid to be cooled faster. This indent is
continuous with the
exterior of the liquid container so as to prevent any contamination of the
drinking liquid
by the cooling reactants. The indent may be any width and length although it
should be
long enough to draw heat evenly from all areas of the liquid container, and
not too wide
75 so as to maximize the amount of liquid the container can hold.
The cooling mechanism may be activated by a twist and push on the base, made
of any
moldable material. The dual twist and push actions of the activating mechanism
are a
safety precaution that will ensure the liquid bottle will not accidentally be
activated to
80 cool.
The area encapsulating the two reactants is a thin envelope wherein the two
reactants of
predetermined amounts are separated by a non-permeable membrane. When the non-
permeable membrane is punctured, an endothermic reaction draws heat from the
liquid in
85 the container, cooling it to a favorable temperature. A dye may be placed
in either or both
reactant vessels in such a way that the consumer can see when the reaction has
taken
place.
Description of Fires
Figure 1: Shows complete liquid cooling apparatus
Figure 2(a): Displays modified container for liquid
Figure 2(b): Illustrates cooling device
2
CA 02506726 2005-05-10
Detailed desgriotion and M~~ mode of carrying ont ~hedi gvention
95 Referring to Fig. 1, the cooling device (Fig. 1, B) is shown in combination
with a
container (Fig. 1, A). The container is usually a conventional plastic water
bottle with a
small opening for capping and a closed base (Fig. 2b, I~ with one invagination
(Fig. 2a,
B) into which the cooling device can be inserted, and through which contact
between the
encapsulated liquid and the cooling device is possible.
100
The cooling device and the container are presented separately in Figs. 2a and
2b. The
cooling device is composed of a plastic capsule (Fig. 2b, C) containing
reactants A and B
separated by a non-permeable membrane, which can result in an endothermic
reaction
upon mixing. A flexible material surrounding the joint of the capsule, so,
seals the
105 capsule such that leakage of contained reactants (Fig. Zb, E) is
prevented. The flexible
material to which the capsule is sealed to is mounted on a base, such that the
base's
radius is larger than the radius of the bottom of the container and enables
the insertion of
the capsule into the invagination of the container.
110 For optimal cooling of the liquid in the container, the endothermic
reaction involves the
addition of purified urea powder to water in the ratio of 3g-15g of urea
(reactant A) to
l0ml of water (reactant B) for every 100 ml of contained liquid.
A colorant/dye can be added to one or more reactam such as the urea powder so
that the
115 colors of the two reactants are distinct. Upon mixing, the colorant will
also stain: the other
reactants in the capsule, thus acting as an indicator to allow the detection
of any mixing
occurring by accident.
The insertion and capping of the cooling device to the container will induce
enough
120 pressure on the flexible material such that compression of the flexible
material will push
the membrane bag containing urea towards the appendages, at the same time, the
turning
mechanism for capping the cooling device onto the container will assist the
rupturing of
the membrane by the appendages, thus release the content in the membrane bag.
125 The radius of the invagination on the container should be slightly larger
than the radium
of the capsule but still allow close contact between the two layers of
plastic, thus enable
the fast conduction. The length of the invagination should be slightly shorter
than the
capsule such that the limitation of physical space due to capsule insertion
will aid the
compression of the flexible material.
130
The flexible material should be adaptable so that significant compression and
twisting of
this material allows for the rupture of the membrane bag by the appendages.
135
CA 02506726 2005-05-10
Figy~e 1
Legend
195
A Container
B Cooling Device
F_ ig~e 2~
200 Legend
A Opening
B Invagination
205 F_i, urn a 2(b)
Legend
C Capsule, containing reactant A
D Appendages
210 E Reactant B, separated from reactant A by membrane
F Base of capsule, comprised of flexible material A
G Flexible material B
H Base of liquid cooling container unit
7
