Patent ID: 7819117
Filing Date: 2010-10-26
Classification: A62B

Abstract:
1. An emergency oxygen mask consuming carbon dioxide and moisture exhaled by a user of the emergency oxygen mask and generating oxygen for inhalation by the user of the emergency oxygen mask, the emergency oxygen mask comprising: a mask part mountable on the face of the user and, when mounted on the face of the user, defining a sealed space adjacent to the mouth and the nose of the user, the mask part including a carbon dioxide transmission container attached at a central location of the mask part for transmitting the carbon dioxide and moisture flowing through the first check valve; an oxygen generating container having an outer circumferential surface and containing particulate potassium dioxide, wherein the carbon dioxide transmission container opens to and is in fluid communication with the particulate potassium dioxide for contacting and reacting the carbon dioxide and moisture with the potassium dioxide to generate gaseous reaction products including oxygen that flow in a first direction through the oxygen generating container; an oxygen transmission container having, in cross-section, a semi-cylindrical shape, including an outer surface, and defining a flow path located between the outer circumferential surface of the oxygen generating container and the outer surface of the oxygen transmission container for flow of the gaseous reaction products including oxygen from the oxygen generating container in a second direction, opposite the first direction, wherein the oxygen generating container is disposed within the oxygen transmission container so that a surface of the oxygen generating container is in contact with a surface of the oxygen transmission container; an oxygen storage container attached to and in fluid communication with the oxygen transmission container and storing the gaseous reaction products and oxygen flowing in the second direction from the oxygen transmission container; and first and second filters in fluid communication with the oxygen storage container, having, in cross-section, semi-cylindrical shapes, attached to opposite lateral sides of the oxygen transmission container, and inclined along the opposite lateral sides toward each other, wherein each of the first and second filters includes soda-lime for removing carbon dioxide from the gaseous reaction products including oxygen flowing from the oxygen storage container, and silica gel for removing moisture and reducing temperature of the gaseous reaction products including oxygen flowing from the oxygen storage container, the first and second filters being in fluid communication with the mask part for supplying oxygen from the first and second filters, through the second check valve, to the inhalation port for inhalation by the user.