COLLAR Russian patent published in 2000 - IPC

FIELD: clothing parts for protecting individual's breath organs from low-temperature air. SUBSTANCE: collar is knitted in two layers from heat-insulated fibers and adapted for adhering to individual's neck, head lower part, mouth and nose. Air supply channel within opening in lower layer of collar adjacent to nose and mouth is defined by rigid heat-insulating material forming collar part making continuation of part adjoining to nose. End portion of air supply channel adjoining to nose and its lower part adjacent to mouth are made from netted heat-insulating material, and inner part of air supply channel is filled with layers of air-permeable heat-exchanger. Outer layer of collar lower layer beyond mouth is covered with watertight film, and air-permeable condensate freezing-on carcass made in the form tangled heat-conductive threads is positioned on watertight film. Carcass is communicated to air supply channel. Opening for communicating with atmosphere is made in upper layer of knitted collar adjacent to freezing-on carcass. Such construction provides complete heating of inhaled frosty air to positive temperatures and removal of frozen-on condensate during wearing of collar to eliminate damage of clothing by condensate. EFFECT: simplified construction and increased efficiency. 1 dwg