Disposable infant heel warmer

Details Disposable infant heel warmer Disposable infant heel warmer

1991-09-23

1992-09-01

Yeung, James C.

Stoves and furnaces

Heaters

Chemical

126204, F24J 100

Patent

active

051430487

ABSTRACT:
A heat pack comprised of a supercooled aqueous solution of sodium acetate and hydroxyethyl cellulose together with a plastic or glass disk or ampule containing sodium acetate crystals in a sealed, flexible container. Activation or crystallization of the sodium acetate portion of the solution is produced by breaking the disk or ampule and exposing the solution to the sodium acetate crystals.

REFERENCES:
patent: 2541736 (1951-02-01), Alexander
patent: 4292517 (1981-10-01), Guex et al.
patent: 4332690 (1982-06-01), Kimura et al.
patent: 4361491 (1982-11-01), Truelock
patent: 4451383 (1984-05-01), Arrhenius
patent: 4823769 (1989-04-01), Semaan
patent: 4860729 (1989-08-01), Benson
patent: 4865012 (1989-09-01), Kelley

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