Patent ID: 9091353
Filing Date: 2015-07-28
Classification: F16K,Y10T

Abstract:
1. A gas charging check valve comprising: a top cover portion comprising a top cover fixing portion, a first elastic element, a top valve and a cover body, wherein the first elastic element is disposed between the top valve and the cover body, and wherein elastic force is applied on the top valve by the first elastic element; and a bottom cover portion comprising a bottom cover fixing portion, a second elastic element, a movement control portion and a bottom valve, wherein the movement control portion has a protrusion portion, wherein the movement control portion is disposed between the second elastic element and the bottom valve, wherein the second elastic element applies elastic force on the movement control portion, and wherein the elastic force of the second elastic element is applied on the bottom valve with the movement control portion; wherein the top cover fixing portion and the bottom cover fixing portion are joined correspondingly, wherein the cover body is embedded on the top cover fixing portion with the first elastic element, the top valve, the second elastic element, the movement control portion and the bottom valve disposed inside the top cover fixing portion and the bottom cover fixing portion, wherein the protrusion portion protrudes outside the bottom cover fixing portion, and wherein when the protrusion portion of the movement control portion is moved by an external force, the elastic force exerted on the bottom valve by the second elastic element is removed.