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. 05, 2016
Filed:
Feb. 19, 2014
Surpass Industry Co., Ltd., Gyoda-shi, Saitama, JP;
Kazuki Hirai, Saitama, JP;
SURPASS INDUSTRY CO., LTD., Gyoda-Shi, JP;
Abstract
A flow regulating deviceis provided which includes: a valve elementwhich is movable into contact with or away from a valve seat; a springfor exerting an urging force on the valve element; a diaphragmfixed to an end of the valve element, the diaphragm having a fluid contact surfaceand a back surface; a pressure chamberinto which compressed air is externally introduced; and a pistonfor transmitting the pressure of the compressed air that is introduced into the pressure chamberto the back surfaceof the diaphragm, wherein a portion of the pistonwhich portion receives the pressure of the compressed air has an area equal to or more than twice the area of the fluid contact surfaceof the diaphragm