PORTABLE HEATER FOR GENERATING AND CIRCULATING HEAT IN WEARING APPAREL

摘要

A portable heater for generating and circulating heat in wearing apparel. The heater consists of a compact insulated case having a cavity therein which is adapted to receive a chemical heat cartridge which gives off heat through an exothermic chemical reaction reaction when an activator or catalyst is added to the chemical content of the cartridge. A liquid reservoir is positioned in the case for radiant heat transfer from the chemical heat cartridge. A flexible liquid conduit has opposite ends thereof connected for circulation of the heated liquid from the reservoir in a closed circuit, and a pump is provided for circulating the heated liquid through the conduit on demand. 1.