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:
Jan. 13, 2015
Filed:
Feb. 23, 2011
Eiji Okamoto, Tokyo, JP;
Eiji Okamoto, Tokyo, JP;
Eagle Industry Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a solenoid valve able to control flow amount as desired without receiving influence of change in fluid pressure. In the present invention, in a control valve for opening and closing a first poppet valveand a second poppet valveby a solenoid portion, a first pressure receiving area Swhich is a seating area of the first poppet valve, a second pressure receiving area Swhich is a seating area of the second poppet valve, a third pressure receiving area Swhich is a pressure receiving area of a first pressure sensing portionand a fourth pressure receiving area Swhich is a pressure receiving area of a second pressure sensing portionare made approximately equal to each other. Thereby unbalanced forces received from fluid flowing in and out when each poppet valve is actuated are all canceled.