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:
Jan. 16, 2001
Filed:
Feb. 23, 1999
Alok Sharan, Easton, PA (US);
Abstract
The invention is directed to a gas cooled fiber-optic cable apparatus for use in a hostile environment, for instance adjacent a metallurgical furnace, and a method using the apparatus to determine carbon content of molten steel. The fiber-optic cable includes a radiation collection end comprising a manifold chamber that surrounds the fiber-optic cable filaments used to collect radiant energy emitted from the furnace flame. The manifold includes a tip portion having an orifice to expose the filaments to the radiant energy, and a gas supply attached to the manifold to inject a cooling gas into the chamber. The orifice provides a discharge for expelling the cooling gas from the manifold chamber at a high velocity purge to prevent foreign matter from entering the chamber. The gas cooled fiber-optic cable transmits collected radiant energy to a radiation sensor. The sensor converts the energy into voltage signals and the signal information is processed to determine carbon content of steel contained in the metallurgical furnace.