Patent ID: 7661153
Filing Date: 2010-02-16
Classification: E03D

Abstract:
1. A flush toilet that uses a prescribed amount of cleansing water stored in a cleansing water tank to cleanse the toilet and discharge waste, said flush toilet comprises: a bowl having a bowl-shaped waste receiving surface, a rim constituting an upper edge portion whose inner surface overhangs inward and a shelf formed between the rim and the waste receiving surface; a drainage channel whose inlet is connected to the bottom of the bowl for discharging waste; a first water channel for supplying cleansing water from the cleansing water tank, the first water channel having an end forming a first water spout for spouting cleansing water onto the shelf of the bowl to form a vortex; and a second water channel for supplying cleansing water from the cleansing water tank, the second water channel having an end forming a second water spout for spouting cleansing water onto the shelf of the bowl in the same direction as the swirling direction of the vortex, wherein the second water channel makes a substantially horizontal U-turn prior to forming the second water spout; wherein the bowl is substantially elliptical, having laterally opposed sides and a fore and an aft end, the sides having a radius of curvature that is relatively large compared to a radius of curvature of the aft end, the first water spout is located on one side of the bowl relative to its fore-aft center axis at a location adjacent a point where a radius of curvature of the bowl changes from a smaller value to a larger value and the second water spout is located on the other side of the fore-aft center axis at a location adjacent a point where the radius of curvature of the bowl changes from a larger value to a smaller value.