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. 24, 2007
Filed:
Jul. 27, 2005
Hiroyuki Ichikawa, Kani, JP;
Takehiko Fushimi, Kariya, JP;
Hiroyuki Ichikawa, Kani, JP;
Takehiko Fushimi, Kariya, JP;
Tokai Rubber Industries, Ltd, Komaki-shi, JP;
Aisin Seiki Kabushiki Kaisha, Kariya-shi, JP;
Abstract
An active vibration insulator includes an electromagnetic actuator, a cyclic-control-signals output device, and an electromagnetic-actuator driver. The electromagnetic-actuator driver includes an asymmetric half-bridge circuit, and an actuating-signals output device. The actuating-signal output device outputs a signal for turning on one of a high-side switch and a low-side switch of the asymmetric half-bridge circuit, and outputs a pulse-width-modulated actuating signal for actuating the other one of them by means of pulse-width modulation based on the cyclic control signals, which the cyclic-control-signals output device outputs, or outputs a pulse-width-modulated actuating signal for actuating both of them by means of pulse-width modulation when the cyclic control signals are positive. Moreover, the actuating-signal output device outputs a signal for turning off one of them, and outputs a pulse-width-modulated actuating signal for actuating the other one of them by means of pulse-width modulation when the cyclic control signals are negative.