Patent ID: 7500585

Claim:
A fluid-storing container comprising: a container main body comprising a shape-restorable fluid-storing portion for storing a fluid therein and a mouth portion formed at an end of the fluid-storing portion for discharging the fluid; and a valve mechanism attached to the mouth portion and comprising: (a) a valve seat member comprising: (i) a valve seat with an opening through which the fluid is to pass, and (ii) a guiding portion disposed under the valve seat coaxially with the opening, and (b) a non-biased valve member comprising: (i) a valve body having a shape corresponding to that of the valve seat for opening and closing the opening of the valve seat depending on a pressure inside the fluid-storing portion, and (ii) a guiding shaft integrated under the valve body coaxially with the valve body and slidably coupled with the guiding portion of the valve seat member, wherein the valve mechanism further comprises a sub-valve body disposed above and coupled with the valve body coaxially with the valve body, wherein the valve seat member further comprises an inner wall extending from the valve seat upward, with which a periphery of the sub-valve body is in non-contact and contact for respectively opening and closing a clearance therebetween depending on a pressure inside the fluid-storing portion.