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. 31, 2020
Filed:
Feb. 12, 2016
Applicant:
Daiken Medical Co., Ltd., Osaka, JP;
Inventors:
Assignee:
DAIKEN MEDICAL CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 43/04 (2006.01); F04B 43/02 (2006.01);
U.S. Cl.
CPC ...
F04B 43/046 (2013.01); F04B 43/02 (2013.01); F04B 43/021 (2013.01); F04B 43/028 (2013.01); F04B 43/04 (2013.01); F04B 43/043 (2013.01);
Abstract
The pump unit comprises a pump including a piezoelectric element and a discharge mechanism for discharging fluid according to operation of the piezoelectric element, and a valve mechanism attached to the pump. The discharge mechanism and the valve mechanism are separately formed by joining a plurality of metal layer pieces stacked in a predetermined stacking direction by diffusion welding, and are secured to each other by diffusion welding.