Gas analyzer
US3951607A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Nov 29, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.