Reusable heater in a package

摘要

A heater in a housing with an opening. The heater reacts with oxygen to produce heat and upon consumption of the oxygen, the heating reaction stops and can be restarted at a later point in time upon the introduction of additional oxygen and is used in a package for heating pre-moistened substrates such as sanitary wipes, and the like.

主权项

1. A portable heater comprising:
a housing having at least one opening and a reaction chamber; and, a heater disposed in the housing; wherein the portable heater is devoid of an oxygen forcing or pumping device; and wherein upon an introduction of a controlled amount of unforced ambient oxygen to the reaction chamber through the opening, the heater reacts with the ambient oxygen to produce a controlled amount of heat, and upon consumption of the ambient oxygen the heater ceases reacting to produce heat until an additional amount of ambient oxygen is introduced into the reaction chamber.