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:
Apr. 11, 2000
Filed:
Dec. 10, 1997
Yukio Nishizawa, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A vibration damper for detecting vibrations of break pads and vibrating the pads in such a way as to damp the vibrations detected. The damper has the function of adjusting control constants for a control circuit according to the degree of deterioration with time, of the pads due to wear so that vibrations of the pads can be damped in an optimum manner. A vibration detector means detects frictional vibrations of the pads and the disk rotor. A control signal corresponding to the detected vibration frequency is applied to a vibrator means through a control circuit. When an input signal for correction timing is inputted from an ignition switch, a signal generator transmits a signal having a predetermined frequency to the vibrator means. The resulting vibration is detected by a signal detector. Based on the detection signal, transfer functions for the control circuit are adjusted to suppress vibrations having squealing frequencies.