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:
Oct. 23, 2001
Filed:
May. 25, 1995
Robert J. Koffron, Farmington Hills, MI (US);
Tetron, Inc., Farmington Hills, MI (US);
Abstract
An improved vortex inhibitor for separating slag from molten metal during the discharge of molten metal through a nozzle includes a uniform castable refractory body with a regular pyramidal shape. The tapered body includes swirl obstructing surfaces extending along its length and is geometrically proportioned so that the center of gravity is closer to the apex than the center of buoyancy of the body. Preferably, the outermost parts of the base intersect a circle whose diameter is larger than the diameter of the nozzle opening and defining a base length dimensionally fixed with respect to the base length within a predetermined range. Preferably, the longitudinal height is in the range of 0.5 to 1.0 times the diameter of the circumscribed circle. A modified, spherically configured body which can be rolled into position also is geometrically proportioned to keep the center of gravity spaced from the center of buoyancy and closer toward the apex of the modified shape.