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US 4,791,804 AGranted
Method of testing a cold gas for the presence of a hazardous gas
AssigneeAtlantic Richfield Company
InventorsHelmuth W. Kutta, Orville C. Morrison
Life of this patent
Estimating the term…
Abstract
A method and apparatus for testing cold gases for a hazardous gas by flowing the cold gas through a tubing positioined in a garment and then flowing the heated gas from the tubing into a suitable test apparatus.
Claims18
A method for testing a gas at a temperature below about -10 degrees F for the presence of a hazardous gas, said method comprising:
- (a) passing a quantity of said gas through a tubing positioned in a garment and near the inner surface of said garment so that body heat of a wearer of said garment is transferred to said gas flowing through said tubing to heat said quantity of gas with said body heat of said wearer of said garment;
- and
- (b) analyzing a portion of said heated quantity of gas for the presence of said hazardous gas.
An apparatus for testing a gas at a temperature below about -10 degrees F for the presence of a hazardous gas, said apparatus comprising:
- (a) a garment means including a tubing means positioned in said garment and near the inner surface of said garment so that body heat of a wearer of said garment is transferred to said gas flowing through said tubing to heat a stream of said gas passed through said tubing with said body heat of said wearer of said garment, said tubing including an inlet and an outlet;
- and
- (b) a test apparatus in fluid communication with said tubing outlet for testing said heated gas for said hazardous gas.
Dependencies are inferred from the claim text.