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. 10, 1985
Filed:
Oct. 31, 1984
Applicant:
Inventors:
Assignee:
NGK Spark Plug Co., Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C / ; F01D / ;
U.S. Cl.
CPC ...
464181 ; 464183 ; 4162 / ; 415214 ;
Abstract
Composite turbine shaft includes a ceramic shaft and a metal shaft, both ends being butt-joined by brazing wherein a center void is provided in the ceramic shaft end so as to secure good heat insulation as well as strong junction even under the difference in thermal expansion between the ceramic shaft and the metal shaft.