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:
Mar. 15, 2011
Filed:
Jul. 30, 2003
Osamu Nomura, Tokyo, JP;
Masamichi Takai, Tokyo, JP;
Masaru Kurisaki, Tokyo, JP;
Hidetaka Ogino, Tokyo, JP;
Toshio Horiuchi, Tokyo, JP;
Shinsuke Inoue, Tokyo, JP;
Osamu Nomura, Tokyo, JP;
Masamichi Takai, Tokyo, JP;
Masaru Kurisaki, Tokyo, JP;
Hidetaka Ogino, Tokyo, JP;
Toshio Horiuchi, Tokyo, JP;
Shinsuke Inoue, Tokyo, JP;
Shinagawa Refractories Co., Ltd., Tokyo, JP;
Abstract
An object of the invention is to provide a casting nozzle in which attachment and deposition of alumina or the like can be prevented while a drift of molten steel can be prevented. The casting nozzle according to the invention is characterized in that the casting nozzle has a molten steel flow hole portion in which 'a plurality of independent protrusion portions and/or concave portions' are disposed so that each of the protrusion portions and/or concave portions has a size satisfying the expression (1): H≧2 mm and the expression (2): L>2×H mm [in which 'H' shows the maximum height of the protrusion portion or the maximum depth of the concave portion, and “L” shows the maximum length of a base portion of the protrusion portion or concave portion].