Patent ID: 6769576
Filing Date: 2004-08-03
Classification: B05B

Abstract:
A delivery container comprising:a bottomed cylindrical casing for storing a liquid therein; a cap vertically movably mounted on an upper end of said casing and having a discharge port for discharging the liquid from said casing, said cap being normally biased to move upwardly away from said casing by a spring and movable downwardly toward said casing for discharging the liquid from said casing through said discharge port; a cylinder disposed in a lower portion of said casing and having an axis extending vertically; a piston vertically slidably disposed in said cylinder and having a communication hole vertically extending therethrough; a hollow shaft having an end connected to the communication hole of said piston and an opposite end connected to the discharge port of said cap; and a check valve disposed inside a valve chamber of said piston in a passage extending from said communication hole via said shaft to said discharge port, for passing the liquid flowing from below said piston and blocking the liquid flowing from above said piston; said cylinder having a flow passageway for providing fluid communication between the interior of said cylinder and the interior of said casing when said piston is positioned upwardly in said cylinder, and blocking fluid communication between the interior of said piston and the interior of said casing when said piston is positioned downwardly in said cylinder.