U.S. patent application number 09/755128 was filed with the patent office on 2002-04-25 for instant cold pack.
Invention is credited to Liao, Wen Hu.
Application Number | 20020046566 09/755128 |
Document ID | / |
Family ID | 21661600 |
Filed Date | 2002-04-25 |
United States Patent
Application |
20020046566 |
Kind Code |
A1 |
Liao, Wen Hu |
April 25, 2002 |
Instant cold pack
Abstract
A plastic cold pack comprises a water bag and a coolant
consisting of ammonium, sodium carboxyl methyl cellulose, and
sodium chloride. In use, press or knead the cold pack to break the
water bag. Instantly, a chemical reaction occurs as the coolant
mixes with water released from the water bag. Such chemical
reaction is capable of cooling a contact object at about 26.degree.
C. instantly for serving as a soothing means in an emergency.
Inventors: |
Liao, Wen Hu; (Chang-Hua
City, TW) |
Correspondence
Address: |
WEN HU LIAO
P.O. BOX 487
CHANG-HUA CITY
500
TW
|
Family ID: |
21661600 |
Appl. No.: |
09/755128 |
Filed: |
January 8, 2001 |
Current U.S.
Class: |
62/4 ;
62/530 |
Current CPC
Class: |
C05F 11/00 20130101;
B65D 81/3272 20130101; F25D 5/02 20130101; F25D 2400/28 20130101;
C09K 5/16 20130101; F24V 30/00 20180501 |
Class at
Publication: |
62/4 ;
62/530 |
International
Class: |
F25B 009/02 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 19, 2000 |
TW |
089121885 |
Claims
What is claimed is:
1. A plastic cold pack comprising: a water bag filled with water;
and a particle like coolant consisting of ammonium, sodium carboxyl
methyl cellulose, and sodium chloride, whereby press or knead the
cold pack to break the water bag such that a cooling reaction
instantly occurs as the coolant mixes with water released from the
water bag.
2. The cold pack of claim 1, wherein the weight ratio of the
coolant to water in the water bag is 1 to 1.
3. The cold pack of claim 1, wherein the ammonium has a weight
percentage of 98% of the coolant, the sodium carboxyl methyl
cellulose has a weight percentage of 1% of the coolant, and the
sodium chloride has a weight percentage of 1% of the coolant.
4. The cold pack of claim 1, wherein the coolant is made from
organic chemicals such that the used coolant is capable of serving
as fertilizer after diluted with water.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to cold packs and more
particularly to a cold pack capable of cooling a contact object at
about 26.degree. C. instantly.
BACKGROUND OF THE INVENTION
[0002] A conventional cold pack implemented as a rubber/plastic bag
filled with water. Such cold pack is typically stored in a freezer.
However, the previous cold pack suffered from several
disadvantages. For example, the time required for freezing water as
ice is relatively long. As such, the soothing effect of the cold
pack is not good if there is an emergency occurred before water
completely turns into ice. Further, the precious space of freezer
is somewhat wasted for storing the cold pack. Furthermore, the
solid (i.e., iced) cold pack is not appropriate for some
emergencies. Moreover, the iced cold pack is not appropriate to
carry because it will melt after leaving the freezer.
SUMMARY OF THE INVENTION
[0003] It is thus an object of the present invention to provide a
plastic cold pack comprising a small water bag and a coolant
consisting of 98% ammonium, 1% sodium carboxyl methyl cellulose,
and 1% sodium chloride. In use, press or knead the cold pack to
break the water bag. Instantly, a chemical reaction occurs as the
coolant mixes with water released from the water bag. Such chemical
reaction is capable of cooling a contact object at about 26.degree.
C. instantly for serving as a soothing means in an emergency.
[0004] It is another object of the present invention to provide an
instant cold pack wherein the constituents of the coolant are
organic chemicals such that the used coolant may be diluted by
water to serve as fertilizer for raising plants. This is an
environmental protection functionality.
[0005] The above and other objects, features and advantages of the
present invention will become apparent from the following detailed
description taken with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 is a perspective view of an instant cold pack
according to the invention; and
[0007] FIG. 2 is a cross-sectional of the FIG. 1 cold pack.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0008] Referring to FIGS. 1 and 2, there is shown an instant cold
pack constructed in accordance with the invention implemented as a
plastic bag 10 comprising coolant 20 and a small water bag 30
filled with water (H.sub.2O) 31. Preferably, the weight ratio of
coolant 20 to water 31 is 1 to 1. The coolant 20 consists of 98%
ammonium, 1% sodium carboxyl methyl cellulose, and 1% sodium
chloride. These constituents are pre-mixed to form a particle like
material.
[0009] In use, press (or knead) bag 10 to break the water bag 30.
Instantly, a chemical reaction occurs as the coolant 20 mixes with
water 31 released from water bag 30. Such chemical reaction is
capable of cooling a contact object at about 26.degree. C.
instantly. Thus, it may well serve as a soothing means in an
emergency.
[0010] A plurality of advantages and features of the cold pack of
the invention are detailed below. For example, the constituents of
coolant 20 are organic chemicals. As such, the used coolant 20 may
be diluted by water to serve as fertilizer for raising plants. This
is an environmental protection functionality. Also, the cold pack
may give a fresh to a somewhat tired driver. Further, the cold pack
may serve as a portable refrigerator to cool certain foods or
drinks while outing for a picnic. It is important to note that the
coolant 20 has an anti-caking feature. That is, it is not subject
to solidification due to moisture, heat, or pressure. Moreover, an
organic anionic material is contained in coolant 20. As such, it is
capable of melting in water instantly. In addition, a natural
inorganic mineral is formed on the particles of coolant 20 for
preventing air from condensing therearound. Additionally, the
pouring density is 0.670.+-.0.03 (i.e., 0.64 to 0.70) and fuel oil
retention capacity is 11% among the constituents of coolant 20.
[0011] While the invention herein disclosed has been described by
means of specific embodiments, numerous modifications and
variations could be specific embodiments, numerous modifications
and variations could be made thereto by those skilled in the art
without departing from the scope and spirit of the invention set
forth in the claims.
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