Abstract: A chemical cartridge for respirators for respirators, the cartridge containing a chemical, e.g., potassium hyperoxide, which when acted upon by carbon dioxide and moisture, produces oxygen from a stream of inhaled air. Two discharge nozzles are provided which project into the chemical and out of which the regenerated exhaled air flows. The incoming flow occurs over a large area and the outflow occurs over a small area with the peripheral surfaces of the discharge nozzles being spaced substantially equidistant from an inlet surface of the chemical, thereby ensuring optimum use of the chemical for oxygen production purposes because a user's exhaled air is caused to flow completely through the entire space occupied by the chemical.

Abstract: An oxygen bottle carrier apparatus is particularly designed for securing a "D" size oxygen storage cylinder to a medical patient transport stretcher for transport to, from, or in an emergency medical transport vehicle. The carrier apparatus includes a flexible, coated material bag, open at one end, with a drawstring closure and adjustable straps adapted to be mounted on the upper framework of the stretcher in unused space just in front of the upper and lower frame members of the stretcher at its head end. The adjustability of the straps allows for use of the apparatus with various models of stretchers. The oxygen bottle is inserted through the open end of the bag so that only the bottle stem and associated valves and gauges protrudes from the bag. The bag is then closed using the drawstring closure. The apparatus is then mounted to the head end of the stretcher upper frame members by use of two straps located at either end of the bag.

Abstract: A gas mask having a facepiece comprised of three separate transparent layers secured around their peripheries in a detachable manner, the inner layer being made of soft material, the middle layer being made of material that flexibly retains its form, and the outer layer being made of material for protection against liquid agents. An eye outsert is formed from the middle layer over the area around the eyes of a wearer, and a nose cone is formed from the middle layer so as to provide space about the nose and mouth. Inhaled air is drawn through channels formed in the middle layer that extend from the periphery of the facepiece to the outsert. After passing through the outsert, inhaled air passes through a channel formed in the middle layer to the nose cone. A passageway is provided for exhaled air to pass from the nose cone. Prescription lenses for the wearer are integrally formed in a member that can be snapped into the eye outsert.