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:
Jul. 03, 2018
Filed:
Dec. 20, 2017
Eagle Industry Co., Ltd., Tokyo, JP;
Koichi Mori, Tokyo, JP;
Shinji Nishida, Tokyo, JP;
EAGLE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
A check valve () that opens and closes by causing a valve element () to come into contact with and separate from a valve seat () and thereby controls a flow of fluid that flows in through an inlet () and flows out through an outlet (), having a guide portion () that has a fluid guide surface provided at a downside thereof, wherein the valve seat () has a first valve seat and a second valve seat, and the valve element () has a first valve portion () that is to be seated on the first valve seat, a second valve portion () that is to be seated on the second valve seat, and a pressure receiving surface () that extends between the first valve portion () and the second valve portion () in such a manner that a distance between the pressure receiving surface () and the first valve seat gradually reduces.