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:
Apr. 03, 1990
Filed:
Dec. 20, 1988
Takashi Otsuka, Okayama, JP;
Masaru Terao, Okayama, JP;
Masahiko Nose, Okayama, JP;
Kenji Yamamoto, Okayama, JP;
Mototsugu Osada, Okayama, JP;
Shinagawa Refractories Co., Ltd., Tokyo, JP;
Abstract
An opening element for an insert nozzle of a slide gate valve apparatus, wherein a dead weight having an outside diameter smaller than the inside diameter of the melt passage opening of the slide gate valve apparatus is connected to a refractory cap by means of a steel wire, or by a refractory or metallic coupling rod and a method of opening said slide gate valve apparatus wherein said opening element is set in said respective passage openings of the insert nozzle and of a bottom plate connected to the nozzle, and said opening element is opened by the impact load exerted when said dead weight falls down due to the opening of the slide gate valve apparatus.