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:
Dec. 12, 2023
Filed:
Dec. 20, 2021
Minebea Mitsumi Inc., Nagano, JP;
Yuta Yoshii, Tokyo, JP;
Chikara Sekiguchi, Tokyo, JP;
Shigenori Inamoto, Tokyo, JP;
Yuki Takahashi, Tokyo, JP;
Daisuke Kodama, Tokyo, JP;
Daisuke Kurita, Nagano, JP;
MINEBEA MITSUMI INC., Nagano, JP;
Abstract
A pump system contains a vibration actuator which can be electromagnetically driven by applying an alternating-current voltage E thereto, a sealed chamber connected to a suction port and a discharge port, and a movable wall for changing a volume of the sealed chamber. The movable wall is displaced due to drive of the vibration actuator to supply fluid in the sealed chamber into a target object. The pump system controls an effective value of the alternating-current voltage E so that an amplitude Y of the vibration actuator is constant.