Abstract: A toilet to reduce water consumption for waste disposal. One embodiment uses a toilet which has a frustum-shaped bowl, whose outlet can be hermetically sealed by a saucer-shaped valve, wherein the bowl contains no water. In one embodiment, a user who deposits only urine can depress one button to automatically open the saucer vertically down and rinse and flush the urine into an adjoining drain line with about 250 ml (0.25 gallon) of water. If the user deposits solid waste, another button is depressed to release a staggered flush (first and second quantities of water) capable of causing solid human waste, test plastic balls, or equivalents to carry further in an adjoining drain line.

Abstract: A toilet to reduce water consumption for waste disposal. One embodiment uses a toilet which has a frustum-shaped bowl, which can be substantially hermetically sealed by a saucer-shaped valve, wherein the bowl contains no water. In one embodiment, a user can depress one button to automatically open the saucer vertically down and rinse and flush urine into an adjoining drain line with about 250 ml (0.25 gallons) of water. In one embodiment, a user can depress a button to automatically release a staggered flush capable of causing solid human waste, test plastic balls, or equivalents to carry further in an adjoining drain line.

Abstract: A toilet has a frustum-shaped bowl (26). Normally the bowl is hermetically sealed by a saucer-shaped valve and contains no water. Depressing button 72 automatically opens the saucer vertically down and rinses and flushes urine into an adjoining drain line with about 250 ml (0.25 gallons) of water. Depressing button 74 automatically releases a staggered flush capable of causing solid human waste, test plastic balls, or test condoms filled with tofu to carry further in the drain line. About 5.0 liters (1.25 gallons) is sufficient to carry solid waste to a sewer. About 250 ml (0.25 gallons) is sufficient to carry urine to a standard adjoining drain line; once there it flows gravitationally to a sewer main. 1.0 to 2.0 liters can carry 100 test plastic balls an average of more than 12 meters, (40 feet).

Abstract: A frustum-shaped toilet bowl (26) includes a reversibly rotable saucer-shaped seal (46), or saucer. The saucer can automatically be rotated upward hermetically to compress closed against a sealing ring (48) that surrounds the outside of the bowl near its bottom outlet (32). The saucer is normally closed to prevent sewer gases from entering a bathroom from an adjoining drain line (36). The closed saucer can retain human waste or test balls in the bowl or, when opened, permits them to free-fall of their own weight into the drain line. The bowl has opposing water outlets (42) which are connected to flushometer valve (34), which is connected to a source of pressurized water. Depressing a button (74) automatically provides a wet spot in the bowl to prevent falling feces from sticking to the bowl. Depressing the button a second time opens the saucer and causes additional water to stagger flush solids while they are moving in the pipe.

Abstract: A gravity drop-toilet uses main water via electronically programmed valves to rinse separate areas of a bowl (71) in sequence via appropriately located and pointing jet orifices (136, 138,140) with about 70% less water than siphon toilets. Electronically timed valve (180) hydraulically causes a pair of bellows (110) to compress and expand and thereby reversibly pivot a mechanical linkage to retain waste in the bowl and drop waste via a vertical waste passageway into a sewer pipe (30). The linkage comprises a transfer arm (118) that pivots a rotating arm of a cup (128) and flap actuating arm (104) to pivot a springy plate (78) upward against a dimple (80) formed on under the side of the flap (30) which thereby aligns itself against the bottom edge (74) of the bowl (71). A urine version of this mechanism uses apertures (174, 175) that they enclose combine to center defecating sitters over a cylinder outlet (48) of the bowl.