Patent ID: 7770594
Filing Date: 2010-08-10
Classification: B60K,F16K,Y10T

Abstract:
1. A liquid shutoff valve gear provided at an upper space inside of a hermetically sealed vessel for containing a liquid for making a gas flow in and out, to and from outside, and shutting off a leakage of the liquid from the hermetically sealed vessel, the liquid shutoff valve gear comprising: a housing divided into an upper chamber and a lower chamber by being partitioned by a partition plate including an opening portion; a float slidably contained inside of the lower chamber and moved up by receiving a buoyancy from the liquid inside of the hermetically sealed vessel; an exhaust port, through which the upper chamber communicates with outside of the hermetically sealed vessel, at a peripheral wall of the upper chamber; an upper end portion of the float including a valve for closing the opening portion of the partition plate in accordance with an upward movement of the float; and a partition wall comprising a cylindrical shape extending in an upper direction from a peripheral edge of the opening portion inside of the upper chamber, the partition wall being opposed to an opening of the exhaust port, and a notched portion, forming an opening extending through the partition wall, and being brought into contact with at least the peripheral edge of the opening portion such that the notched portion is formed in a portion of the partition wall not facing the opening of the exhaust port.