Humidifier with dual float valves

Details Humidifier with dual float valves Humidifier with dual float valves

1993-09-23

1995-08-29

Burr, Edgar S.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

137423, 137613, 251210, A61M 1614, A61M 1616, A61M 1618, A61M 1620

Patent

active

054451434

ABSTRACT:
A humidification chamber for a respiratory humidifier water is maintained by the use of floats which actuate valves to control the passage of water through a water inlet. Two floats are each provided with actuating mechanisms to separately control the respective valve members. The separate valve members are covered by an elastomeric moulding which couples the valve members and provides a seal. The valves are co-axially aligned and the system provides improved safety by allowing for reliable operation in the case where one of the floats fails. An alternative embodiment of the dual valve construction is also disclosed.

REFERENCES:
patent: 2460011 (1949-06-01), Hungerford, Jr. et al.
patent: 3049144 (1962-08-01), Oleskow
patent: 4051205 (1977-09-01), Grant
patent: 4352371 (1982-10-01), Walters
patent: 4529002 (1985-07-01), Jacobson
patent: 4529867 (1985-07-01), Velnosky et al.
patent: 4913140 (1990-04-01), Orec et al.
patent: 5010915 (1991-04-01), Johnson et al.

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