Importance

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Abstract

An inhalation apparatus comprising an automatic pressure regulator including a body having an opening for receiving the valve of an oxygen tank and an outlet for a hose extending from the outlet. A valve is attached to the hose and includes a manual control for selectively varying the volume of oxygen passing through the hose to an inhaling mask on the end of the hose. The pressure regulator body includes two chambers, a passage extending from one chamber to the other, and an inlet passage extending to one chamber. Each chamber has a diaphragm closing one wall thereof and a spring yieldingly urging the diaphragm in one direction. An orifice is associated with the inlet and an orifice is associated with the passage. A lever is pivoted adjacent its respective diaphragm and has one end thereof pivotally connected to its respective diaphragm and the other end thereof engaging a valve associated with the respective orifice. The lever is pivoted to the body by a pin extending through the lever and engaging recesses. Headed screws are threaded into the body to hold the pin in the recesses. A hose extends from the regulator and a manually controlled regulator valve is provided to selectively control the flow of oxygen from the regulator.

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First Claim