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:
Dec. 21, 1982
Filed:
Jul. 08, 1980
Applicant:
Inventors:
Shigeo Muranaka, Yokohama, JP;
Michio Onoda, Yokohama, JP;
Assignee:
Nissan Motor Company, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73 35 ; 310329 ; 73654 ;
Abstract
A vibration sensor for an automotive vehicle having a piezoelectric element of diaphragm type for detecting mechanical vibrations from an internal combustion engine such as knocking frequency. The piezoelectric element is formed within a holder of plastic or the like and bonded thereto in a manner to accurately regulate the clamping pressure at the element periphery and regulate the vibration area thereof to accurately regulate the resonant frequency of the vibration sensor.