Liquid purification or separation – With means to add treating material
Reexamination Certificate
2000-08-11
2001-09-11
Lithgow, Thomas M. (Department: 1724)
Liquid purification or separation
With means to add treating material
C210S167150, C137S268000, C422S264000
Reexamination Certificate
active
06287466
ABSTRACT:
BACKGROUND OF THE INVENTION
1) Field of the Invention
The subject matter of this invention pertains to a device for introducing a chemical into a pool of liquid and more particularly to a chlorinator for a swimming pool.
2) Description of the Prior Art
In order to keep a swimming pool sanitary and to keep algae from growing within the swimming pool, it is necessary to add chlorine on a regular basis to the swimming pool water. The vast majority of swimming pool chlorinators are designed to supply chlorine on an automatic basis by adding chlorine over a period of time. One way in which chlorine can be added over a period of time is by utilizing of a tablet that is designed to dissolve at a certain rate. Normally, these tablets take a period of days in order to be completely dissolved.
There are several different types of chlorinators that uses dissolving tablets. One particular type of chlorinator comprises a floating chlorinator where the dispenser floats around the swimming pool with the tablet or tablets contained within the dispenser and with the dissolving of the tablet to chlorinate the water of the swimming pool. However, one problem with the floating dispenser that it commonly moves to one particular location in the swimming pool and stays in that location. The result is that the chlorine concentration within the swimming pool near the chlorinator is substantially greater than other regions of the pool. Commonly, a floating dispenser type of chlorinator is used as a secondary form of chlorinator with the primary form of chlorinator comprising another type of chlorinator that works in conjunction with the water circulation system of the swimming pool.
A common form of primary chlorinator is one that is integrated in conjunction with the water circulation system of the swimming pool. This type of chlorinator provides for injecting of controlled amounts of chlorinating chemicals into the circulating water has intended to achieve a uniform distribution of chlorine throughout the pool. Chemicals are often solid tablets or sticks of chlorine containing salts. This type of chlorinator causes the recirculating water to flow over the tablets or the sticks with the tablets or sticks to gradually dissolve. The chlorine concentration can be regulated by controlling the flow rate of the circulating water past the sticks or tablets. One of the disadvantages of this type of chlorinator is that it has to be mounted in conjunction with the water circulation system of the swimming pool. Another disadvantage of this type of chlorinator is that even chlorination throughout the swimming pool is almost never achieved. There always seems to be at least one area of the swimming pool that is not receiving an adequate amount of chlorine.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to construct a chlorinator that can be substituted for a chlorinator that is connected to the water circulation system of a swimming pool.
Another objective of the present invention is to construct a chlorinator that can be quickly and easily mounted in conjunction with a swimming pool not requiring any modification of the swimming pool structure or the swimming pool equipment.
Another objective of the present invention is to construct a chlorinator that works in conjunction with the water inlet conduit of a swimming pool that is not fixedly mounted in relation to the water inlet conduit.
Another objective of the present invention is to construct a chlorinator where a separate chlorinator can be mounted in conjunction with each water inlet conduit of a swimming pool with the result that there is several different chlorinators used within a swimming pool to achieve even distribution of chlorine throughout the swimming pool.
Another objective of the present invention is to construct a chlorinator that can be easily regulated to vary the amount of chlorine that is being dissolved within the swimming pool water and also can be easily manipulated so as to vary the direction of flow of the water so the water can be directed to an area of the swimming pool that contains a low chlorine content.
Another objective of the present invention is to construct a chlorinator that can be manufactured at a relatively inexpensive price and therefore sold to the ultimate consumer at an inexpensive price.
The chlorinator of the present invention comprises a housing which is generally cylindrical in configuration and has an exterior surface on which is mounted at least one suction cup. Connected with the housing is an inlet conduit and an outlet conduit. A chlorine tablet is to be contained within the housing. The inlet conduit terminates at a flexible connector. The suction cup is to be mounted onto the wall surface of the swimming pool with the flexible connector surrounding the water inlet conduit When the suction cup is pressed tightly against the wall surface of the swimming pool, the flexible connector deflects and compresses forming a relatively tight contact also with the wall surface of the swimming pool. The housing includes a valve, and this valve can be adjusted so that the bulk of the water is conducted through the housing and into the outlet conduit (minimum level) with only a minimal contact with the chlorine tablet or can be adjusted so that all the water that is conducted through the housing is conducted into contact with chlorine tablet prior to exiting the outlet conduit (maximum level). Also, the valve can vary the amount of the water between the previously mentioned minimum and maximum levels. The conduit can be adjusted to vary the direction of the flow from the outlet conduit so the chlorinated water can be directed to different areas of the swimming pool and to an area of the swimming pool that is low in dissolved chlorine. A lanyard is connected to the suction cup at the exterior surface of the surface cup with the outer end of the lanyard being connected to a float ring which is to float on the surface of the water of a swimming pool. Grasping of the float ring and yanking therein will cause the suction cup to disengage from the wall surface and effect removal of the chlorinator when such is desired from the swimming pool.
REFERENCES:
patent: 3129172 (1964-04-01), Dickey, Jr. et al.
patent: 4140634 (1979-02-01), Harry
patent: 4662387 (1987-05-01), King, Sr.
patent: 5076315 (1991-12-01), King
patent: 5225074 (1993-07-01), Moini
patent: 5743287 (1998-04-01), Rauchwerger
patent: 5932093 (1999-08-01), Chulick
patent: 6065690 (2000-05-01), O'Brien
patent: 6162407 (2000-12-01), Pihl
patent: 6221244 (2001-04-01), Yassin
Lithgow Thomas M.
Munro Jack C.
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