The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 1976
Filed:
Aug. 07, 1972
Applicant:
Inventor:
Pierre Boillot, Le Pecq, FR;
Assignee:
Institut de Recherches de la Siderurgie Francaise (IRSID), Saint Germain en Laye, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 19 ;
Abstract
Method and apparatus for measuring the gas in a metal sample wherein a reference circuit has gas flowed therethrough from a source, a detection circuit including a degassing chamber therein has gas flowed therethrough from the same source, the reference and detection circuits leading to comparison cells of a catharometer and then to a common measuring circuit, and a complementary circuit is connected to the detection circuit with a gas flow therethrough to selectively apply a protective gas curtain to the degassing chamber during introduction and removal of the sample.