# US 2013/0152930 A1 · Cold climate air exchanger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0152930 A1 - Document ID: US20130152930A1 - Status: Published application - Kind: A1 - Application number: 13/690,622 - Filed: 2012-11-30 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Inventors: Thomas Votel; Adria Hardy; Jeffrey A. Popowski - Web page: https://patentgrep.com/patent/US20130152930A1 ## CPC - A61M 16/1075: {by influencing the temperature (A61M16/1045 takes precedence)} - A41D 13/11: Protective face masks, e.g. for surgical use, or for use in foul atmospheres (eye-masks A61F9/04 {; hoods affording protection against heat or harmful chemical agents A62B17/04}) - A41D 13/1153: {with a hood} - A61M 16/1045: {Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas} - A62B 9/003: {Means for influencing the temperature or humidity of the breathing gas} - A61M 16/06: Respiratory or anaesthetic masks - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) ## Abstract The present disclosure is directed to a novel cold climate air exchanger. In one aspect of the disclosure, the cold climate air exchanger is comprised of an interior and an exterior panel that houses an open-celled foam filter insert there between. The assembly cooperates to gain a light weight air exchanger that advantageously regulates the natural moisture and temperature of the inhaled and exhaled air while maintaining adequate airflow for the user. ## Claims ### Claim 1 A cold climate air exchanger comprising: a front panel of non-porous material having a perimeter and defining an opening generally at a center of the front panel; a rear panel of non-porous material having a perimeter and defining an opening generally at a center of the rear panel; a porous filter having a density of between 1.75 and 2.25 PCF; wherein the front panel and rear panel are joined at their perimeters such that the opening of the front panel is generally aligned with the opening of the rear panel and such that a cavity is defined between the front panel and the rear panel; and wherein the porous filter is disposed within the cavity and adjacent the generally aligned openings ### Claim 2 (depends on 1) The cold climate air exchanger of claim 1 wherein the filter is comprised of a polyether polyurethane. ### Claim 3 (depends on 1) The cold climate air exchanger of claim 1 wherein the filter is between ½ inch and 1 inch in thickness. ### Claim 4 (depends on 1) The cold climate air exchanger of claim 1 wherein the filter has between 18 and 22 pores per square inch. ### Claim 5 A cold climate air exchanger comprising: a front panel having a cup shape and being comprised of a non-porous fabric, the front panel having a perimeter and defining an opening generally at the apex of the front panel; a rear panel having a cup shape and being comprised of a non-porous fabric, the rear panel having a perimeter and defining an opening generally at the apex of the rear panel; a porous filter; wherein the front panel and rear panel are joined at their perimeters such that the opening of the front panel is generally aligned with the opening of the rear panel, and such that a cavity is defined between the front panel and the rear panel; and, wherein the porous filter is disposed within the cavity and adjacent the generally aligned openings. ### Claim 6 (depends on 5) The cold climate air exchanger of claim 5 wherein the cold climate air exchanger is incorporated into a balaclava. ### Claim 7 (depends on 5) The cold climate air exchanger of claim 5 wherein the cold climate air exchanger is incorporated into a scarf. ### Claim 8 (depends on 5) The cold climate air exchanger of claim 5 wherein the cold climate air exchanger is incorporated into a mask. ### Claim 9 (depends on 5) The cold climate air exchanger of claim 5 wherein the filter has a front surface, a rear surface and a thickness of between ½ inch and 1 inch; wherein the front panel opening exposes between about 75% and 95% of the front surface of the filter; and, wherein the rear panel opening exposes between about 75% and 95% of the rear surface of the filter. ### Claim 10 A balaclava containing a cold climate air exchanger comprising: a cup shaped portion of non-porous material having a front side and a rear side and defining a volume there between, the cup shaped portion further defining a front side opening located generally at the center of the front side, and a rear side opening located generally at the center of the rear side, said openings being generally aligned; a porous filter, having a front surface area, a thickness and a rear surface area, the porous filter being disposed within the volume; wherein the filter covers the generally aligned openings; and, wherein the cup shaped portion is comprised of fabric and is incorporated into a portion of a balaclava. ### Claim 11 (depends on 8) The cold climate air exchanger of claim 8 wherein the filter has a density of between 1.75 and 2.25 PCF and contains between 18 and 22 pores per square inch. ### Claim 12 (depends on 8) The cold climate air exchanger of claim 8 wherein the filter is between ½ inch and 1 inch thick and the generally aligned openings expose between about 75% and 95% of the front and rear surface areas of the filter.