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. 09, 2026
Filed:
Oct. 22, 2024
Horiba Stec, Co., Ltd., Kyoto, JP;
Hiroshi Takakura, Kyoto, JP;
HORIBA STEC, Co., Ltd., Kyoto, JP;
Abstract
A drive circuit of a piezo actuator is provided with a flyback transformer whose primary winding is connected to a DC power supply, and whose secondary winding is connected to the piezo actuator, a charging switch that is connected to the primary winding, a discharging switch that is connected to the secondary winding, a regenerative capacitor that is connected to the primary winding and in which discharge energy from the piezo actuator is regenerated, and a switch control unit that controls ON/OFF operations of the charging switch and the discharging switch. The switch control unit controls the ON/OFF operations of the charging switch and the discharging switch so as to repeatedly charge and discharge the piezo actuator and thereby control the applied voltage of the piezo actuator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile