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US 12,130,087 B2Granted
Heat pack with supercooled aqueous salt solution and glycerin
AssigneeRapid Aid Corp.
InventorJeffrey Thomas Whitely
Life of this patent
Estimating the term…
Abstract
A heat pack using supercooled aqueous salt solution that resists premature activation at low temperatures is disclosed. The heat pack comprises two sheets that are bonded together to form a laminated sheet. The heat pack has a first and second compartment. A frangible seal separates the two compartments. One of the compartments contains a supercooled aqueous salt solution. The salt solution contains 15 to 25 percent glycerin by mass.
Claims16
A heat pack comprising:
- a first sheet and a second sheet bonded together to form a laminated sheet having an interior space;
- a first compartment and a second compartment contained within the interior space;
- a supercooled aqueous salt solution housed in the second compartment, the supercooled aqueous salt solution comprising greater than 15 percent and less than or equal to 25 percent glycerin by mass;
- and
- a frangible seal between the first and second compartments.
2 more elements
A method of warming a heel of an infant for blood sampling, the method comprising applying a heat pack to the infant's heel, the heat pack comprising:
- a first sheet and a second sheet bonded together to form a laminated sheet having an interior space;
- a first compartment and a second compartment contained within the interior space;
- a supercooled aqueous salt solution housed in the second compartment, the supercooled aqueous salt solution comprising greater than 15 percent and less than or equal to 25 percent glycerin by mass;
- and
- a frangible seal between the first and second compartments.
2 more elements
Dependencies are inferred from the claim text.