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. 29, 2008
Filed:
Jun. 25, 2004
Tomohiro Yotabunn, Tokyo, JP;
Tsuyoshi Mizuno, Tokyo, JP;
Hideto Takasugi, Kanagawa, JP;
Tsuneo Kondo, Tokyo, JP;
Hisao Inubushi, Tokyo, JP;
Tomohiro Yotabunn, Tokyo, JP;
Tsuyoshi Mizuno, Tokyo, JP;
Hideto Takasugi, Kanagawa, JP;
Tsuneo Kondo, Tokyo, JP;
Hisao Inubushi, Tokyo, JP;
JFE Refractories Corporation, Ako, JP;
Nippon Rotary Nozzle Co., Ltd., Yokohama-Shi, JP;
Tokyo Yogyo Kabushiki Kaisha, Tokyo, JP;
JFE Mechanical Co., Ltd., Tokyo, JP;
Abstract
In a rotary nozzle brick body formed into a substantially egg-like shape in it's plan view, the present invention secures a contact area of a nozzle portion and improves a configuration factor which considerably affecting the durability of the body. A rotary nozzle brick body is characterized in that the external shape in plan view is comprised of first circular portions (G), second circular portions (H), third circular portions (K), and tangent lines connecting the first circular portions and third circular portions so that a substantially elliptical shape is formed by increasing the circular portion and shortening the tangent lines, instead of a substantially egg-like shape having long tangent lines. Since the substantially elliptical shape is formed by reducing the linear portion of the brick body in it's plan view while the shape is expanded circularly, the contact area is maintained even if the sliding plate brick is rotated up to it's full-opened state, thereby eliminating a fear that molten steel or the like may leak.