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:
Sep. 17, 2024
Filed:
Sep. 13, 2019
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventor:
Kenjiro Okaguchi, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 45/047 (2006.01); A61B 5/0225 (2006.01); F04B 49/02 (2006.01); H02N 2/06 (2006.01); H03B 5/32 (2006.01);
U.S. Cl.
CPC ...
F04B 45/047 (2013.01); A61B 5/0225 (2013.01); F04B 49/02 (2013.01); H02N 2/06 (2013.01); H03B 5/32 (2013.01);
Abstract
A fluid control device includes a piezoelectric pump that includes a piezoelectric element and whose discharge pressure output varies depending on a drive frequency of the piezoelectric element, a self oscillation circuit that self-oscillates in accordance with a drive supply voltage and that drives the piezoelectric element at an oscillation frequency, and a control circuit that generates a control voltage. The oscillation frequency of the self oscillation circuit varies depending on the control voltage.