Liquid changer

• US 6,357,492 B1
• Filed: 06/07/2001
• Issued: 03/19/2002
• Est. Priority Date: 06/07/2001
• Status: Expired due to Term

• Current Assignee: Sgr-Bin Hsu
• Original Assignee: Sgr-Bin Hsu
• Inventors: Hsu, Sgr-Bin
• Primary Examiner(s): MAUST, TIMOTHY LEWIS
• Application Number:
  US09/875,189
• Time in Patent Office: 285 Days
• Field of Search: 141/18, 141/21, 141/25, 141/26, 141/37, 141/39, 141/41, 141/44, 141/285, 141/309, 137/565.01, 137/565.25, 184/1.5, 184/28
• US Class Current: 141/26
• CPC Class Codes: B67D 7/0205 by manually operable pumping apparatus hand-held apparatus with pumps for dispensing or spraying liquids or fluent materials B05B11/00
• CPC Class Codes: B67D 7/60 manually operable
• CPC Class Codes: Y10T 137/86099 Hand pump

Abstract

A liquid changer includes a base, a liquid tank, a pump and a changeover valve. The base has two insert grooves for the liquid tank and the pump to fit therein to stand up. The changeover valve is located at one side of the pump. Switching the changeover valve to IN or OUT position can pump out the liquid in the liquid tank or exhaust out the liquid in a container of any other use. Thus the liquid changer can be used in two ways by means of the changeover valve easily switched. In addition, the pump is located outside the liquid tank, increasing liquid volume to be stored in the liquid tank.

Claims

1. A liquid changer comprising:

a base having two insert grooves formed in an upper surface;

a liquid tank fixed in one of said two insert grooves to stand up, having a cover closing on an upper open end, said cover having a liquid inlet and outlet and a gas inlet and outlet, a first guide tube fixed on said liquid inlet and outlet, a second guide tube fixed on said gas inlet and outlet, an inner guide tube located in said liquid tank and having an upper end connected to an inner side of said liquid inlet and outlet;

a pump fixed in the other of said two insert grooves to stand up, having a pump tank, an elongate press rod extending in said pump tank and having an upper end protruding up out of an upper end of said pump tank, a piston fixed with a lower end of said press rod, an upper outlet formed in an upper wall and a lower outlet formed in a lower wall, said upper outlet and said lower outlet respectively connected to a guide tube;

a changeover valve located at one side of said pump, having a tubular member provided with a guide hole in an intermediate wall, said guide hole connected to said second gas guide tube, said tubular member further having an outlet formed in an upper wall and an inlet formed in a lower wall, said outlet connected to said upper outlet of said pump, said inlet connected to said lower outlet of said pump; and

,

said changeover valve switched to IN or OUT position for either pumping out the liquid stored in said liquid tank or exhausting out the liquid into a container of any other use, said liquid changer having two functions by means of said changeover valve, said pump located outside of said liquid tank so as to increase storing volume of said liquid tank, conveniently and quickly replacing old liquid stored in said liquid tank with new liquid.

2. The liquid changer as claimed in claim 1, wherein said base has a step ring fixed at one side.

3. The liquid changer as claimed in claim 1, wherein said liquid tank has a recess formed in a bottom for a lower end of said inner guide tube in said liquid tank to fit therein with a gap formed between said lower end of said inner guide tube and a bottom of said recess for liquid stored in said liquid tank to be pumped out completely.

4. The liquid changer as claimed in claim 1, wherein said tubular member of said changeover valve has an inner passageway, a rod extending in said passageway and having two stoppers fixed around said rod, one of said two stoppers located at an upper portion and the other located at a lower portion of said rod, said rod having two ends protruding out of said tubular member and then fixed with a press button, a guide hole formed in an intermediate wall of said tubular member and communicating with said inner passageway, and an outlet formed in an upper wall and an inlet formed in a lower wall of said tubular tube also communicating with said inner passageway.

5. The liquid changer as claimed in claim 1, wherein said cover of said liquid tank has a handle fixed on an upper surface.