Patent ID: 7972064

Claim:
A container assembly comprising: a container having opposed sidewalls; (a) a closure assembly connected to a sidewall, the assembly comprising: a valve body having an annular flange attached directly to a planar surface of one of the opposed sidewalls of the container, a fluid opening through the flange, a cylindrical wall extends axially away from the annular flange and is positioned circumjacent the opening and has a first set of threads on a portion of an outer surface of the cylindrical wall; (b) a diaphragm positioned within the cylindrical wall and dimensioned to cover the fluid opening; and (c) a threaded cap having a top surface, a fluid exit, a first annular wall and a second annular wall spaced from the first annular wall and defining an annular space therebetween, a diaphragm contacting surface, and a second pair of threads on an inner portion of the first annular wall, the threaded cap is mounted on the valve body with the cylindrical wall inside the annular space and by cooperative engagement of the first set of threads and the second set of threads, the threaded cap is moveable with respect to the valve body between an open position of the closure assembly where the first set of threads and the second set of threads are partially engaged to a closed position of the closure assembly where the first set of threads and the second set of threads are fully engaged and the cap is tightly engaged to the valve body and the diaphragm contacting surface presses the diaphragm against the opening of the valve body and fluid is blocked from escaping through the closure assembly.