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:
Jan. 17, 1984
Filed:
May. 14, 1982
Applicant:
Inventors:
Yoji Kato, Okazaki, JP;
Shunzo Yamaguchi, Okazaki, JP;
Takeshi Fukazawa, Kariya, JP;
Shinichi Saigo, Okazaki, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23Q / ;
U.S. Cl.
CPC ...
219270 ; 1231 / ; 219260 ; 219553 ; 338303 ; 361266 ;
Abstract
A glow plug for preheating the combustion chamber of a diesel engine. The glow plug has a heat generating portion and a mounting portion. The heat generating portion is provided with a ceramic central electrode made of an electrically insulating material and provided with at least one spiral screw-thread groove formed in the outer peripheral surface thereof. A ceramic electric resistor serving as a heat generating member is disposed in the groove. The electric resistor is made of TiC or SiC with or without addition of Al.sub.2 O.sub.3.