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. 14, 2014
Filed:
Feb. 02, 2010
Atsushi Ozeki, Seto, JP;
Atsushi Ozeki, Seto, JP;
NGK Spark Plug., Co., Ltd., Nagoya, JP;
Abstract
In a method for measuring deviation of a ground electrode from an optimal igniting position, a metallic shell is engaged with a female thread jig. Then the axis O of the metallic shell, a predetermined first measuring point Pand a predetermined second measuring point Pon a front end face of the ground electrode are detected. Then, a circumferential angle βformed between a reference straight line 'LS' connecting O to the optimal igniting position O, and a first straight line Lwhich connects O to Pis measured, followed by a measurement of a circumferential angle βformed between LS and a second straight line Lconnecting O to PThereafter, the deviation of the ground electrode from Ois measured as a circumferential angle 'α' between “LS” and a third straight line Lconnecting the axis O to the center C of the front end face.