Abstract: A flush toilet that includes an air reservoir having an interior diaphragm installed inside a tank in the toilet. The air reservoir has a hydraulic pressure maintained by a water supply coming from a conduit. At least two propulsion jets are located in a bottom portion of a toilet bowl. These propulsion jets are capable of ejecting contents of the bowl into a siphon upon activation of a flush mechanism. Furthermore, a double water-supply pipe system is located between a valve and the tank. The double water-supply pipe system includes a first pipe that extends from the valve to orifices in the bottom of the toilet bowl. A second pipe is connected at substantially 90° to the first pipe and extends from the first pipe to a rim of the toilet bowl.

Abstract: A water efficient toilet includes a self pressurized tank connected to a water supply through conduits and includes a valve operatively connected to the conduits. The toilet assembly has a bowl with inner walls, the bowl having a lower reservoir connected to a trap way and an upper rim with a channel therein. The channel is provided with a plurality of openings and the lower reservoir of the bowl has through holes. The through holes of the lower reservoir and the channel of the upper rim of the bowl are connected to the valve by a first and second conduit. When flushing the toilet by opening the valve, a phased inflow of water in the toilet is induced. The phased inflow of water includes an initial and an intermediate inflow of water. The initial inflow of water passes into the first conduit and through the through holes of the lower reservoir to initiate the evacuation of the contents of the lower reservoir through the trap way into a drain pipe.