Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-11-29
1976-04-20
Reese, Robert M.
Chemistry: physical processes
Physical processes
Crystallization
250226, 250576, 313217, 313218, 356178, G01J 350, G01N 2126, G01N 3316, H01I 516
Patent
active
039516075
ABSTRACT:
A gas analyzer especially for pulmonary use has a frame supporting a centrally mounted radiation chamber of about 10 to 30 millimeters (0.4 to 1.2 inches) substantially uniform inside diameter, having a circular-cylindrical glass wall closed by molybdenum protected aluminum ends connected in an electrical circuit to constitute an anode and a cathode. Leading from a patient's breathing tube is a conduit passing through a regulating valve and axially through the cathode, the conduit having an inside diameter of about 0.060 inches. The chamber is subjected to subatmospheric pressure through a duct of from about one-eighth to one-quarter inches inside diameter, passing through the anode to a vacuum pump. Arrayed equidistantly from the axis and around the chamber are several radiation detection devices, each connected to a display device. There are individual filters interposed between the chamber and at least some of the detecting devices.
REFERENCES:
patent: 2574655 (1951-11-01), Panofsky et al.
patent: 3025745 (1962-03-01), Liston
patent: 3209197 (1965-09-01), Ahsmann et al.
patent: 3229566 (1966-01-01), Hutchinson et al.
patent: 3312853 (1967-04-01), Mela
patent: 3704952 (1972-12-01), Bird
Reese Robert M.
Searle Cardio-Pulmonary Systems Inc.
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