Metered dispensing pump device preventable of water permeation

• US 6,230,942 B1
• Filed: 10/21/1999
• Issued: 05/15/2001
• Est. Priority Date: 10/21/1999
• Status: Expired due to Term

• Current Assignee: Roy Kuo
• Original Assignee: Roy Kuo
• Inventors: Kuo, Roy
• Primary Examiner(s): Kaufman, Joseph A.
• Assistant Examiner(s): DEAL, DAVID R
• Application Number:
  US09/425,135
• Time in Patent Office: 572 Days
• Field of Search: 222/321.3, 222/321.7, 222/321.9, 222/481.5, 222/442
• US Class Current: 222/321.9
• CPC Class Codes: B05B 11/0044 compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means venting means for deformable containers B05B11/047
• CPC Class Codes: B05B 11/1001 Piston pumps B05B11/1087, B05B11/1088, B05B11/109 take precedence
• CPC Class Codes: B05B 11/1023 having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
• CPC Class Codes: B05B 11/106 in a retracted position, e.g. in an end-of-dispensing-stroke position

Abstract

A metered dispensing pump device preventable of water permeation is disclosed and is comprised of a liquid discharging cover, a cap, a liquid storing pipe, a liquid suction valve, a bottle cap, a spring, a valve film and a pipe-like seat. Wherein, the cap is screwed in and locked onto the pipe-like seat. One end of the liquid storing pipe is extended through the cap to connect with the liquid discharging cover, and the other end thereof is connected with the liquid suction valve. The liquid suction valve is loaded with the spring to firmly press the valve film onto the pipe-like seat; thus the metered dispensing pump device is constructed which is locked onto a bottle mouth. When the liquid discharging cover is pressed down, the liquid in the bottle can be easily drawn out of the bottle. By a specific peripheral wall of the liquid storing pipe together with the fact that a tapered pipe of the cap being higher than the cap tightly prevents permeation of water, bathing water can be prevented from permeating into the bottle. Thereby the liquid in the bottle can be protected from pollution of the bathing water.

Claims

1. 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, and

a 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, and

a 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, and

a 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.