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:
Dec. 29, 2020
Filed:
Jun. 11, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Osamu Yamashita, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A double insulating wall structure heating furnace capable of preventing its inner pipe whose strength has decreased due to high-temperature heating from being damaged. A double insulating wall structure heating furnaceincludes an outer pipeand an inner pipedisposed inside the outer pipe, in which a sealed spaceformed between the outer and inner pipesandis depressurized and a heating spaceformed inside the inner pipeis heated, and in which a tubular reinforcing memberis disposed so as to cover an outer circumference of the inner pipe, the tubular reinforcing member being formed of a material having a higher heat resistance and a higher strength than those of the material of the inner pipe