Patent ID: 7121436

Claim:
An improved non-spill water bottle cap for preventing water spillage when a water bottle is inverted to be placed on a water dispenser, said improved non-spill water bottle cap comprising: a cylindrical transparent plastic tube ( 10 ) with a series of holes ( 10 a ) linearly arranged along half of the circumference, midway along the length of said cylindrical transparent plastic tube ( 10 ), a spherical float ( 20 ) disposed within said cylindrical transparent plastic tube ( 10 ) to control the water flow through said tube, a plastic cap head ( 30 ) having a mouth opening, integrally formed with a front end of said cylindrical transparent plastic tube ( 10 ) to cap onto a port of said water bottle, an edge frame ( 11 ) disposed at a rear end of said cylindrical transparent plastic tube ( 10 ) for retaining said spherical float ( 20 ) within said cylindrical transparent plastic tube ( 10 ), an annular flange ( 13 ) with a series of circumferential pinholes ( 13 a ) therein, located along an edge of said mouth opening of said plastic cap head ( 30 ) for retaining said spherical float ( 20 ) within said cylindrical transparent plastic tube ( 10 ), and an annular sealing ridge ( 12 ) integrally formed around the circumference of a front inner wall portion of said plastic tube with a spherically curved mating surface for momentarily blocking the water flow path by contacting said spherical float ( 20 ) when the water bottle is inverted to be placed on the water dispenser.