Patent Application
20100058522
1. Field of the Invention
The present invention relates to toilet tanks, and particularly to a toilet water saver that economizes on the use of water when flushing a toilet tank.
2. Description of the Related Art
Water consumption, potable or otherwise, can be costly to consumers, depending upon demand and the available water supply in the locality. In many metropolitan areas, wastewater is recycled, and the costs are passed to the consumer. In some areas of the world, water is a premium commodity because of geography, availability, economy, and/or weather conditions. Modern toilets consume much of the available water, but they are very inefficient because the same amount of available water in the toilet tank is employed to flush both liquid and solid wastes.
Thus, a toilet water saver solving the aforementioned problems is desired.
The toilet water saver includes a compact tank and a flushing valve system having tank flush valves disposed at different heights with respect to the base of the tank so that the saver efficiently uses the optimal amount of water for the task. When flushing waste, this arrangement allows a small volume of water to be used for liquid waste, the most common form of wastes, and a larger volume for solid waste.
These and other features of the present invention will become readily apparent upon further review of the following specification and drawings.
The sole FIGURE is an environmental front view in section of a toilet tank equipped with an exemplary toilet water saver according to the present invention.
Similar reference characters denote corresponding features consistently throughout the attached drawings.
The present invention relates to a toilet water saver that may include a tank and flushing assembly that efficiently uses the available water in the tank by allowing the user to selectively flush predetermined amounts of water, depending on the particular waste material or load. As shown in the sole drawing FIGURE, the toilet water saver 10 may include a tank body 2 adapted to hold a set volume of water. The water required to fill the tank is supplied through an inflow tube 4 attached to an inlet pipe 6. A float 11, which is pivotally connected to a ballcock assembly via a float arm 12, controls the level 8 of water in the tank 2. As the tank 2 fills, the float 11 rises and gradually closes the ballcock assembly as the float 11 reaches a predetermined level 8 of water.
The flushing valve assembly includes an elongated overflow tube 22 connected to a flush valve body 40. The flush valve body 40 includes a substantially elongated pipe 28 having a first flapper valve seat 41 at the upper end to accommodate a first pivotable flapper valve 24. The opposite end of the pipe 28 is connected to a tank outlet 30 leading to the toilet bowl. The flush valve body 40 has a Tee or branch pipe 32 extending at right angles from the pipe 28 to form a second flapper valve seat 43 for a second pivotable flapper valve 26 near the lower end of the valve body 40. Each of the flapper valve seats 41, 43 are disposed at an angle with respect to the horizontal to ease the flow of water during a flushing operation. This angle is preferably between 30° and 60° with respect to the horizontal.
As shown in the drawing, each of the flapper valves 24, 26 are disposed at different heights with respect to the vertical orientation of the flush valve body 40, i.e., the first flapper valve 24 is disposed at a higher elevation with respect to the bottom of the tank 2 than the second flapper valve 26. Note also that the branching tube 32 and the second flapper valve 26 are disposed near the bottom of the tank 2. The purpose of these different elevations is to control the amount of water employed to flush liquid or solid wastes. The tank 2 holds water up to a predetermined level 8. The first flapper valve 24 is located at a differential depth X below the predetermined level 8. The volume of water contained in the differential depth X corresponds to the amount of water sufficient to provide the water pressure needed to flush liquid wastes from the toilet bowl. Preferably, the volume is less than one-third of the capacity of tank. The second flapper valve 26 is located at a differential depth Y with respect to the predetermined level 8. The volume of water contained in the differential depth Y corresponds to the amount of water sufficient to flush solid wastes from the toilet bowl. Note that the volume encompassed by differential depth Y is much greater than the volume of differential depth X.
An actuator 34 is provided to operate either the first flapper valve 24 only or both flapper valves 24, 26 simultaneously at the option of the user. The actuator 34 includes coaxially mounted handles (at 34) with one handle being independently operable from the other handle. One end of an adjustable chain 20 is connected to the distal end of a first lever arm 16, and the other end of the chain 20 is connected to the first flapper valve 24. The first lever arm 16 is operably attached to a first one of the independently operable handles. A second lever arm 14 is attached to the second handle and is operably connected to a corresponding chain 18, which is connected to the second flapper valve 26. The second handle also actuates the first handle so that both valves 24, 26 may be opened when flushing solid wastes. An exemplary dual handle actuator 34 of this type that may be used in the toilet tank saver 10 is shown and described in U.S. Pat. No. 5,261,129, issued Nov. 16, 1993 to Roy, which is hereby incorporated by reference in its entirety.
Next, the operation of the toilet water saver 10 will be described. When a user desires to eliminate liquid waste, the user actuates the independently operable first handle to open the first flapper valve 24 via the first lever arm 16. The relatively small volume of water in differential depth X drains through the first flapper valve seat 41 into elongate pipe or valve body 28 to the outlet 30. When the user desires to flush solid waste, the user operates the second handle, which, in turn, simultaneously operates the independent first handle to open both flapper valves 24, 26 via the first and second lever arms 12 and 14. The much greater volume of water in differential depth Y insures flushing of the solid wastes.
Due to the features above, the toilet water saver 10 promotes water conservation by only using the necessary amount of water for the particular task. The majority of toilet flushes occur for liquid wastes, but conventional toilets consume the same amount of available water in the tank for both liquid and solid wastes. A substantial savings in water consumption, as well as financial savings, may be obtained by the above system, since it reduces the potential for wasting the water.
It should be noted that the present invention may encompass a variety of alternatives to the various features thereof. For example, the flushing valve assembly may be formed from PVC pipes, plastics or other sturdy waterproof materials. Moreover, the piping thereof may be an integral unit or may be separate pipes threaded or adhesively connected to each other.
It is to be understood that the present invention is not limited to the embodiments described above, but encompasses any and all embodiments within the scope of the following claims.
