Emergency air cooling device

Details Emergency air cooling device Emergency air cooling device

1997-08-13

1999-04-27

Lewis, Aaron J.

Surgery

Respiratory method or device

Means for cooling respiratory gas or respiration device

12820629, A61M 1600

Patent

active

058968563

ABSTRACT:
A lightweight, compact breathing device for firefighters includes a housing having a one end for receiving hot air, a coolant storage cylinder disposed within the housing, an expansion valve in fluid communication with the coolant storage cylinder, a heat exchanger disposed within the housing having a one end in fluid communication with the expansion valve and having another opposite end, a coolant exhaust hose in fluid communication with the opposite end of the heat exchanger, and a mouthpiece in fluid communication with the housing. In use, the expansion valve is opened so that coolant flows from the coolant storage cylinder through the heat exchanger so that air passing through the housing from the one end to the mouthpiece through the heat exchanger is cooled by coolant passing from the coolant storage cylinder through the heat exchanger.

REFERENCES:
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patent: 2920622 (1960-01-01), Steel
patent: 2980112 (1961-04-01), Snyder
patent: 3294088 (1966-12-01), Boehmer et al.
patent: 3404684 (1968-10-01), Brewer, Jr. et al.
patent: 3999541 (1976-12-01), Tabor
patent: 4586500 (1986-05-01), Glynn
patent: 4602486 (1986-07-01), Weinstein
patent: 4635629 (1987-01-01), Thorp et al.
patent: 5421326 (1995-06-01), Rankin et al.
patent: 5482031 (1996-01-01), Lambert

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