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. 19, 1977
Filed:
Nov. 26, 1975
Naoshi Kawabe, Iwaki, JA;
Toshikatu Haga, Iwaki, JA;
Taiitu Nakajima, Tokyo, JA;
Takeshi Takahashi, Sagamihara, JA;
Hiroshi Shinoda, Gifu, JA;
Shuji Hayakawa, Nagoya, JA;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JA;
NGK Insulators, Ltd., Nagoya, JA;
Abstract
A method of repairing an injured portion of a refractory furnace-lining characterized by cutting off the injured portion of said lining through the furnace shell using a specific supersonic flame jet cutter; inserting a rigid refractory lining block having a shape which is similar to that of the through-cut hole of the furnace body; and welding the surrounding periphery of the inserted block to the contact surface of said through-cut hole using the above-mentioned supersonic flame jet cutter as a welder, followed by repairing the outside cut-off shell portion of the furnace body.