Inhalation apparatus

Details Inhalation apparatus Inhalation apparatus

1977-01-24

1978-08-29

Reeves, Robert B.

Dispensing

Gas or vapor dispensing

128185, 222130, 222182, A61M 1500

Patent

active

041098285

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. A pressure relief valve is provided in the first chamber and is adapted to vent the oxygen from the first chamber to the atmosphere when the pressure in the first chamber exceeds a predetermined value.

REFERENCES:
patent: 1142177 (1915-06-01), Kennedy
patent: 1494395 (1924-05-01), Wells
patent: 1569311 (1926-01-01), Barston
patent: 2468483 (1949-04-01), Chambers et al.
patent: 2831607 (1958-04-01), Berndt
patent: 3547143 (1970-12-01), Mills
patent: 3693653 (1972-09-01), Cramer et al.

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