Gas mixing apparatus

Details Gas mixing apparatus Gas mixing apparatus

1977-05-18

1979-04-10

Recla, Henry J.

Surgery

Truss

Pad

128210, 137 81, 137100, 137111, B63C 1116

Patent

active

041483111

ABSTRACT:
Apparatus for supplying a mixture of oxygen and air for respiratory purposes and comprising a supply regulator having a first chamber with an inlet and an outlet for oxygen and a second chamber with an inlet and an outlet for air, control means responsive to a higher pressure in said first than said second chambers to permit air to enter said second chamber, adjustment means for modifying the action of said control means, first and second restrictors in the first and second outlets respectively, the second restrictor bore being larger than that of the first, said first and second outlets leading to a common supply duct and then to a first demand regulator responsive to an inspiration pressure drop to permit a flow of gas therethrough.

REFERENCES:
patent: 2145114 (1939-01-01), Gibbs et al.
patent: 2192662 (1940-03-01), Jones
patent: 2583502 (1952-01-01), Wiggins
patent: 3068879 (1962-12-01), Snowman et al.

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