Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshiyuki Sawada0
Akito Yokoi0
Masao Kohashi0
Yoichiro Takahashi0
Date of Patent
April 10, 2007
0Patent Application Number
110984160
Date Filed
April 5, 2005
0Patent Primary Examiner
Patent abstract
A knock sensor is constructed by putting and fitting components including an annular piezoelectric element, terminal plate, insulating sheet and weight onto a base consisting of a flange portion and a tubular portion, forming a groove part on a tip outer circumferential surface of the tubular portion, fitting a stopper ring functioning to apply an axial preload to the components onto the tubular portion, and caulking fixedly the stopper ring and the tubular portion into the groove part.
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