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:
May. 17, 2016
Filed:
May. 14, 2012
Tomohiro Nakamura, Saitama, JP;
Yutaka Tanaka, Saitama, JP;
Yoshihito Fujishiro, Saitama, JP;
Yasuo Toyoshima, Saitama, JP;
Tomohiro Nakamura, Saitama, JP;
Yutaka Tanaka, Saitama, JP;
Yoshihito Fujishiro, Saitama, JP;
Yasuo Toyoshima, Saitama, JP;
Bosch Corporation, Tokyo, JP;
Abstract
A glow plug is provided that can be easily determined as to whether or not it is a new article. An additional circuit formed by connecting a diode, a fuse, and an adjusting resistor in series in this order is connected in parallel to a heating element of a glow plug. The diode is provided so as to have an anode located on the positive electrode side of the heating element and a cathode located on the fuse side. In the case of a unit inspection, by applying a positive voltage for test to a heating element negative electrode connecting portion, it is possible to determine whether or not the glow plug is normal without blowing the fuse before the glow plug is used in a vehicle.