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:
Feb. 18, 1997
Filed:
Mar. 07, 1995
Philip D Stelts, Center Valley, PA (US);
Bethlehem Steel Corporation, , DE (US);
Abstract
An apparatus for vacuum treating molten steel includes a ladle having a sidewall, a substantially circular closed bottom, and an open top. A first gas injector is operably associated with the bottom for introducing a supply of a selected first gas into the ladle. A barrel degasser is operably associated with the ladle for being introduced into the ladle through the open top. The degasser includes a generally cylindrical shell having a single substantially continuous diameter opening them through defining a treatment space. A second gas injector is radially directed and operably associated with the shell for communicating with the treatment space. A source of the first gas is in flow communication with the first and second injectors. A vacuum source is operably associated with the barrel degasser for applying a vacuum to the treatment space.