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:
Jun. 01, 2004
Filed:
Oct. 16, 2002
Katsuhiro Goto, Inuyama, JP;
Tokai Rubber Industries, Ltd., Komaki, JP;
Abstract
A control section outputs a reference signal which corresponding to a frequency and an amplitude of signals sent from a vibration generation source. The pulse width modulation section generates a drive control signal to, an electromagnetic valve, connection of an air chamber and is alternately switched between the side of an inlet port and the side of the atmosphere. The drive control signal corresponds to an amplitude of the reference signal and is composed of at least the same number of pulses corresponding to a duty ratio-changed frequency as that of each one period of the standard signal. The drive control signal is synchronized with the standard signal. The number of pulses of the drive control signal for each period of the reference signal is changed corresponding to a control frequency of the standard signal so that the number of pulses and the control frequency is not larger than a responding frequency of the electromagnetic valve.