Patent ID: 8272543

Claim:
A neck finish and a one piece full flow cap valve of a fluid bottle, in which, said neck finish comprises of: a first upper and larger cylinder integrally connected and converged to a second lower and smaller cylinder, in which, said first upper cylinder is provided with external threads, and said second lower cylinder is integrally connected to a body of said fluid bottle; and said cap valve comprises of: a first outer cylinder having a bottom open end, a top enclosure wall with a central opening, and a side cylindrical wall with internal threads for engaging said external threads of said first upper cylinder of said neck finish, and a second concentric inner cylinder having a bottom enclosure wall, a top open end integrally connected to said top enclosure wall of said first outer cylinder at peripheral of said central opening of said first outer cylinder, and a side cylindrical wall with a plurality of openings; wherein: said bottom enclosure wall of said cap valve has a sealing means for sealing an interior top rim of said second lower cylinder of said neck finish when said cap valve is rotated to a closed position; and said bottom enclosure wall of said cap valve is departed from said interior top rim of said second lower cylinder of said neck finish when said cap valve is rotated to an open position, in which, said cap valve is capable of discharging fluid through a flow path consisting of a vertical annular clearance between said interior top rim of said second lower cylinder of said neck finish and said bottom enclosure wall of said cap valve, a horizontal annular clearance between said first upper cylinder of said neck finish and said second inner cylinder of said cap valve, said openings in said side cylindrical wall of said second inner cylinder of said cap valve, and said central opening of said top enclosure wall of said cap valve; and each of said vertical annular clearance, said horizontal annular clearance, said openings in said cylindrical wall of said second inner cylinder, and said central opening of said top enclosure wall has a flow area substantially equivalent to a flow area of said second lower cylinder of said neck finish when said cap valve is rotated to said open position; and said cap valve and said neck finish have captive means for providing a stop limit of the rotation of said cap valve in opening direction, and thus prevents said cap valve from being separated from said neck finish at said open position.