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:
Oct. 01, 1985
Filed:
Apr. 25, 1984
Kiminari Kato, Konan, JP;
NGK Insulators, Ltd., , JP;
Abstract
The disclosed ceramic rotor comprises integrally formed blade portions made of ceramics sintered at atmospheric pressure and a blade-holding portion to which said blade portions are integrally cemented by ceramic material. The blade-holding portion is made of ceramics sintered at atmospheric pressure and has a larger density than that of the blade portions. The thickness of the blade-holding portion is not smaller than the thickness of the blade portions but smaller than the distance between the front and rear surfaces of the blade portions. In the disclosed process, bodies of the blade portions and the blade-holding portion are separately formed and coupled by applying ceramic material therebetween, and the coupled bodies are sintered at atmospheric pressure to produce the ceramic rotor.