Liquid purification or separation – Processes – Chemical treatment
Reexamination Certificate
1998-01-09
2001-08-21
Simmons, David A. (Department: 1724)
Liquid purification or separation
Processes
Chemical treatment
C210S739000, C210S095000, C210S103000, C210S205000, C222S159000
Reexamination Certificate
active
06277291
ABSTRACT:
TECHNICAL FIELD
Ozone purification of small batches of liquid with countertop sized equipment.
BACKGROUND
This invention advances from my previous U.S. Pat. No. 5,207,993, entitled Batch Liquid Purifier. It addresses and solves problems involved in the reliable purification by ozone treatment of small batches of liquid, such as required for household purification of water, for example. The problems include: ensuring that no liquid evades ozone treatment, making the ozone treatment reliable for purifying the liquid, informing the user that the purifier is operating properly, preventing ozone from escaping in any harmful quantity, ensuring that the purifier operates consistently and effectively without harm to itself or the user, and accomplishing these and related goals at a reasonably low manufacturing cost in a purifier that operates conveniently.
SUMMARY OF THE INVENTION
I have improved on a batch liquid purifier of the flowthrough type by ensuring ozone purification of an initial flow of liquid that begins the purification process. Although some liquid flow inevitably occurs before full mixing of an ozone-containing gas with the flowing liquid, the initial flow enters an upflow chamber in which bubbles of ozone-containing gas rise at a faster rate than the rising liquid so that ozone-containing gas overtakes and purifies whatever liquid initially precedes the flow of ozone. This also allows an upflow or alternative chamber to be arranged as a visible display of rising bubbles showing that the purifier is operating.
Features relating to the contacting of all the liquid with ozone include structuring the flowthrough passageway downstream of the upflow chamber to ensure sufficient contact between ozone and the liquid to purify the liquid before it reaches a dispenser. Also, liquid is prevented from entering the passageway except when the purifier is operating, and an ozone generator is operated before liquid enters the passageway so that plenty of ozone is ready for mixing with the initial liquid flow. My improvement also preferably includes a disconnectable container; a dispensing spout that is movable; and switches, valves, and indicators safeguarding reliable purification and convenient dispensing without harm to the equipment or the user.
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patent: 3841484 (1974-10-01), Domnick
patent: 4869831 (1989-09-01), Hinkle, II
patent: 5075016 (1991-12-01), Barnes
patent: 5207993 (1993-05-01), Burris
patent: 5302288 (1994-04-01), Meidl et al.
patent: 5531908 (1996-07-01), Matsumoto et al.
patent: 5766488 (1998-06-01), Uban et al.
patent: 5776351 (1998-07-01), McGinness et al.
patent: 3-56195 (1991-03-01), None
Eugene Stephens & Associates
Lawrence Frank M.
Simmons David A.
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