SELF-CONTAINED WARMING PAD

摘要

This invention, as disclosed, provides a selfcontained warming pad comprising: a heating element; a dose of activating liquid adjacent to said element and separate therefrom; a frangible container containing said liquid; and, a substantially liquid-impervious covering layer means to enclose said element and said container, said layer means defining at least one tortuous air passage therethrough, whereby said layer means serves both to promote sustained production of heat and to prevent liquid from exiting the pad.