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:
Feb. 09, 1988
Filed:
Mar. 31, 1986
Applicant:
Inventors:
Shunichi Takagi, Aichi, JP;
Atsushi Kanda, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B25G / ; F16B / ;
U.S. Cl.
CPC ...
403272 ; 403404 ; 228132 ;
Abstract
A joint for joining a ceramic shaft to a metal sleeve includes a gap separating the outer surface of the ceramic shaft from the inner surface of an overlapping portion of a metal sleeve. A brazing filler material is provided in only the portion of the gap proximate the end of the ceramic shaft to accommodate stresses caused by the different thermal characteristics of the metal sleeve and the ceramic shaft.