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:
Jul. 03, 2012
Filed:
Mar. 07, 2008
Katsutoshi Ohta, Kurashiki, JP;
Minoru Katayama, Kurashiki, JP;
Takashi Moriya, Kurashiki, JP;
Yoshinori Fujinami, Kurashiki, JP;
Tetsuya Miyake, Kurashiki, JP;
Katsutoshi Ohta, Kurashiki, JP;
Minoru Katayama, Kurashiki, JP;
Takashi Moriya, Kurashiki, JP;
Yoshinori Fujinami, Kurashiki, JP;
Tetsuya Miyake, Kurashiki, JP;
Kabushiki Kako Co., Ltd., , JP;
Abstract
In an abnormal noise inspection method for an anti-vibration device for vehicle use, it is determined whether, during travel of a vehicle in which a supported member is supported to the vehicle body by an anti-vibration device, abnormal noise occurs or not in the passenger compartment owing to the anti-vibration device. The method includes: an input step of mounting to a shaker the anti-vibration device before it is assembled into the vehicle and then inputting vibrations in a predetermined pattern to a supported member-side mounting part of the anti-vibration device; a measurement step of measuring, during the inputting of vibrations, a transmission force output from a vehicle body-side mounting part of the anti-vibration device; an analysis step of frequency analyzing time-series data on the measured transmission force to obtain a power spectrum of the transmission force; and a determination step of estimating, based on the power spectrum of the transmission force and according to a predetermined evaluation criterion, whether a vehicle produces abnormal noise in the passenger compartment when it runs with the anti-vibration device mounted thereon.