BORU INTERNATIONAL CO., LTD. Patent applications |
Patent application number | Title | Published |
20160003365 | Check Valve for Vacuum Container and Vacuum Container Lid using Same - Disclosed is a check valve which has an excellent sealing force compared with a conventional one by applying a relatively small force which lifts the edge of a valve body part even with a vacuum indicating part being sunk, and which can maintain a vacuum state for a longer time by preventing a ring shape from being dented at a low or high vacuum level. The check valve has features including: a valve body part which is made of an elastic material, is provided with a concave part for providing on the bottom surface thereof an empty space higher than the edge thereof, and has a through-hole vertically formed therein; a vacuum indicating part which is connected integrally to the valve body part along the inner wall surface of the through-hole at a position spaced downwardly from the top of the through-hole, is formed to be thinner than the thickness of the valve body part and protrude upwardly, and sinks toward a lid when negative pressure is generated in the space between the lid and the valve body part; and a fixing part which is coupled to a valve coupling part so as to fix the valve body part to the valve coupling part. | 01-07-2016 |
20150060446 | RUBBER SEAL FOR VACUUM RECEPTACLE AND LID FOR THE RECEPTACLE USING THE SAME - Disclosed is a rubber seal for a vacuum receptacle. The rubber seal is not released by a negative pressure developed in the vacuum receptacle. In addition, the rubber seal is excellent in sealing force, and has a body portion that does not bulge outward while being readily mounted on a lid body. The rubber seal includes: the body portion that surrounds the lateral side of an inner space and extends vertically; an elastic sealing wing portion formed to extend outward from the body portion and provided along the circumference of the body portion; and a multi-functional wing portion formed to extend outward from the body portion above the elastic sealing wing portion, and provided along the circumference of the body portion. | 03-05-2015 |