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. 31, 1991
Filed:
Feb. 20, 1991
Masaya Ito, Kasugai, JP;
Seiji Mori, Kounan, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
In a joining structure of a turbine in which a shaft portion of a ceramic turbine rotor is joined to a metal shaft in the through bore of a metal sleeve by brazing, the joining structure of this invention comprises a first flange formed on the metal sleeve, the first flange extending toward the axis of the through bore, a second flange formed on the metal shaft, the second flange extending outward and the outside diameter thereof being larger than the inner diameter of the first flange, wherein side surfaces of the first and the second flanges are engaged and brazed with each other. An intermediate layer may be interposed between the bottom end of the shaft portion of the turbine rotor and the bottom end of the metal shaft for reinforcement. The intermediate layer is made of one or more than one metal selected from the group consisting of Ni, Cu, Fe, Ag, KOVAR, Fe-Ni Alloy, and W alloy.