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US 6,438,965 B1Granted
Instant cold pack
OwnerWen Hu Liaoinventor
Life of this patent
Estimating the term…
Abstract
A plastic cold pack comprises a water bag and a coolant consisting of ammonium, nitrate 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° C. instantly for serving as a soothing means in an emergency.
Claims3
A plastic cold pack being a plastic envelop holding a particle like coolant and a water bag filled therein:
- the water bag being filled with water;
- and
- the particle like coolant consisting of ammonium nitrate, sodium carboxyl methyl cellulose, and sodium chloride,
- whereby the pressing and kneading of the cold pack breaks the water bag such that a cooling reaction instantly occurs as the coolant mixes with water released from the water bag.
1 more element
Dependencies are inferred from the claim text.