Water Saving Clog Resistant Toilet

Abstract

A toilet to save water and reduce clogs. One embodiment uses two traps and a Pressure Assisted Device (PAD) that applies both negative and/or positive pressurized air between an upper trapway and middle trapway with a pressure connection tube with a means for allowing air to move to or from the top of the PAD to the upper arch between the upper and lower traps. A second embodiment includes a clog-resistant toilet that has no sudden transitions in the pipe to reduce the likelihood of clogging.

What is claimed is: 
     
         1 . A toilet comprising:
 a tank to store water or other liquid,   a pressure assist device (PAD) inside the tank,   a bowl coupled to the tank, wherein the bowl holds water or other liquid and any contents in the liquid,   an upper trap, which is coupled to the bowl,   an upper trapway, which is coupled to the upper trap.   an upper arch, which is coupled to the upper trapway,   a middle trapway, which is coupled to the upper arch,   a lower trap, which is coupled to the middle trapway,   a lower trapway, which is coupled to the lower trap, wherein the volume of the lower trapway is between one-third to one and a half times the volume of the middle trapway,   a tube or other connecting shape, which extends from the location between the upper and lower traps to the PAD, that can move air into or from the top of the PAD to the upper arch to supply positively or negatively pressurized air to the upper arch and the lower trapway and middle trapway,   a lower arch, which is coupled to the lower trapway,   a lower pipe, which is coupled to the lower arch,   a wide section, which is coupled to the lower pipe, and   an exit pipe, which is coupled to the wide section.   
     
     
         2 . The toilet of  claim 1  wherein the PAD is non-rectilinear so that the pressure profile for the pressure pipe is not proportional to the level of the water in the tank, wherein the volume of the lower trapway is between one-third to one and a half time the volume of the middle trapway. 
     
     
         3 . The toilet of  claim 1  wherein the high part of the lower arch is higher than the bottom of the upper arch. 
     
     
         4 . The toilet of  claim 1  wherein there is a wide section after the lower arch, but before the exit pipe, wherein the wide section is larger than the lower trapway to provide a means to break the siphon at the wide section to provide a means to minimize water loss. 
     
     
         5 . The toilet of  claim 1  wherein low part of the lower trap is higher than the low part of the upper trap. 
     
     
         6 . The toilet of  claim 1  wherein the air pressure within the PAD and the pressure pipe will be reduced when the toilet is flushed, creating a partial vacuum that will suck air and possibly water in the upper arch to an extent that the water that was in the lower trap will combine with the water that was in the upper trap to create a siphon that extends from the bowl to the lower trap. 
     
     
         7 . The toilet of  claim 1  wherein the section from the upper trap, the upper arch the lower trap, lower arch and exit pipe substantially forms a sideways  FIG. 8  and the upper trapway and lower trapway are in different planes. 
     
     
         8 . The toilet of  claim 1  wherein the upper trap and the upper arch form a first plane and the lower trap and the lower arch form a second plane, and the first plane and the second plane are within one pipe diameter in separation. 
     
     
         9 . A toilet comprising:
 a tank to store water or other liquid,   a bowl coupled to the tank, wherein the bowl holds water or other liquid and any contents in the liquid,   one or more traps, in which one trap is coupled to the bowl,   one or more pipes, wherein each pipe has an inner circumference and an inner diameter and an outer circumference and an outer diameter, in which one pipe is coupled to the bowl, wherein there are no hairpin turns in the one or more pipes, wherein a hairpin turn is defined to be where the outer circumference of a pipe is bent more than 250 degrees within a length of the pipe that is less than 1.5 times the outer diameter of the pipe, and the toilet is therefore more resistant to clogging compared to prior art toilets.   
     
     
         10 . The toilet of  claim 9  wherein there are no sudden transitions in any of the toilet pipes that can cause cavitation, other than the exit pipe. 
     
     
         11 . The toilet of  claim 9  wherein the transition from the bowl to the trap has a transition without any turns to allow a longer item to flow from the bowl into the trap, instead of the longer items getting stuck at the bottom of the bowl. 
     
     
         12 . A toilet comprising:
 a tank to store water or other liquid,   a pressure assist device (PAD) inside the tank,   a bowl coupled to the tank, wherein the bowl holds water or other liquid and any contents in the liquid,   an upper trap, which is coupled to the bowl,   an upper trapway, which is coupled to the upper trap.   an upper arch, which is coupled to the upper trapway,   a middle trapway, which is coupled to the upper arch,   a lower trap, which is coupled to the middle trapway,   a lower trapway, which is coupled to the lower trap,   a tube or other connecting shape, which extends from the location between the upper and lower traps to the PAD, that can move air into or from the top of the PAD to the upper arch to supply positively or negatively pressurized air to the upper arch and the lower trapway and middle trapway, wherein the PAD has a pressure transfer pipe where there is less resistance to the water and the contents in the water after the pressure transfer pipe compared to before the pressure transfer pipe, so that any clogs are more likely to occur before the pressure transfer pipe than after the pressure transfer pipe,   a lower arch, which is coupled to the lower trapway,   a lower pipe, which is coupled to the lower arch,   a wide section, which is coupled to the lower pipe, and   an exit pipe, which is coupled to the wide section.   
     
     
         13 . The toilet of  claim 12  wherein the upper trapway has a cross sectional area and each of one or more pipes after the pressure transfer pipe have a cross sectional area, and each pipe after the pressure transfer pipe has a larger cross sectional area than the cross sectional area of the upper trapway. 
     
     
         14 . The toilet of  claim 12  wherein one or more pipes have a radius of curvature and after the pressure transfer pipe the one or more pipes have a larger radius of curvature than the radius of curvature of the one or more pipes before the pressure transfer pipe. 
     
     
         15 . A toilet comprising:
 a tank to store water or other liquid,   a pressure assist device (PAD) inside the tank,   a bowl coupled to the tank, wherein the bowl holds water or other liquid and any contents in the liquid,   an upper trap, which is coupled to the bowl,   an upper trapway, which is coupled to the upper trap.   an upper arch, which is coupled to the upper trapway,   a middle trapway, which is coupled to the upper arch,   a lower trap, which is coupled to the middle trapway,   a lower trapway, which is coupled to the lower trap,   a tube or other connecting shape, which extends from the location between the upper and lower traps to the PAD, that can move air into or from the top of the PAD to the upper arch to supply positively or negatively pressurized air to the upper arch and the lower trapway and middle trapway, wherein the PAD has a pressure transfer pipe wherein if there is a clog after the pressure transfer pipe, the water will be prevented from going into the tank,   a lower arch, which is coupled to the lower trapway,   a lower pipe, which is coupled to the lower arch,   a wide section, which is coupled to the lower pipe, and   an exit pipe, which is coupled to the wide section.   
     
     
         16 . The toilet of  claim 15  wherein the water is prevented from going into the tank by means of a valve that allows air to flow through the pipe but water is prevented from going into the tank. 
     
     
         17 . The toilet of  claim 16  wherein the valve consists of a float that is heavier than air, but lighter than water, and includes a chamber that is shaped so that when water enters the chamber, the float will go to the top and seal of the chamber to prevent water exiting the top of the valve. 
     
     
         18 . The toilet of  claim 16  wherein there is a straight bar at the bottom of the valve, and the straight bar is parallel to the direction of the flow of air to lessen the likelihood of solids entering the valve. 
     
     
         19 . The toilet of  claim 16  wherein a stopper is inside the PAD, and the stopper is applied to the top of the pipe between the tank and the upper archway to restrict the flow of air and water and its contents to prevent the water and its contents from going into the tank. 
     
     
         20 . The toilet of  claim 15  wherein the air pressure within the PAD and the pressure pipe will be reduced when the toilet is flushed, creating a partial vacuum that will suck air and possibly water in the upper arch to an extent that the water that was in the lower trap will combine with the water that was in the upper trap to create a siphon that extends from the bowl to the lower trap.