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:
Mar. 26, 2024
Filed:
Sep. 08, 2021
Murata Manufacturing Co., Ltd., Kyoto, JP;
Kenjiro Okaguchi, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A pump device including a first piezoelectric pump, a second piezoelectric pump connected in series with the first piezoelectric pump on a downstream side of the first piezoelectric pump, a drive unit configured to supply AC power as input power to each of the first piezoelectric pump and the second piezoelectric pump, a control unit configured to control input power to the first piezoelectric pump and the second piezoelectric pump, and a power supply unit configured to supply power to the drive unit, in which the control unit sets input power of the second piezoelectric pump to be larger than input power of the first piezoelectric pump.