Patent ID: 6230942
Filing Date: 2001-05-15
Classification: B05B

Abstract:
A metered dispensing pump device comprising:a liquid discharging cover,a cap,a liquid storing pipe,a liquid suction valve,a bottle cap,a spring,a valve film, anda pipe-like seat, wherein;said cap is formed as an integral element, a first end of said cap is provided with a tapered pipe and a thread, while a second end of said cap is provided with a mouth and an inner threaded portion, said mouth is connected to one end of said liquid storing pipe, and said inner threaded portion is screwed in and locked onto a thread on said pipe-like seat so that said cap is screwed in and locked onto said pipe-like seat,a first end of said liquid storing pipe is extended through said cap to connect with said liquid discharging cover, and a second end of said liquid storing pipe is connected with said liquid suction valve, said liquid suction valve is loaded with said spring to firmly press said valve film onto said pipe-like seat, anda mouth of said tapered pipe is higher than said cap, said tapered pipe is separated from said thread of said cap and is in communication with said mouth of said cap, said thread of said cap can be locked onto said liquid discharging cover, and a groove is formed by said thread and is sealed on a bottom, anda peripheral wall of said liquid storing pipe has an obliquity, said peripheral wall tightly contacts the inner wall of said tapered pipe of said cap at positions away from said obliguity, said obliguity of said peripheral wall and said mouth of said tapered pipe on said cap form therebetween an annular gap.