WATERLESS CLOSET ASSEMBLY

Abstract: A waterless closet assembly comprises a toilet (1) having an annular seat (4), a step-by-step pulling bag means mounted below the toilet (1) and a disposal receptacle (10) mounted below the pulling bag means. One end of a tubular plastic bag (11) is arranged in the outside of the toilet (1), and the other end is wound round the upper surface of the annular seat (4) and passes through the inlet (2) of the toilet (1), a ring (14) for extending the plastic bag (11) and the pulling bag means, then is fed into the disposal receptacle (10). The pulling bag means includes a pair of waist drum-shaped pulling bag discs (6) and their step-by-step actuating means. Holding plates (12a, 12b) are fixed to the pulling bag discs respectively for holding the plastic bag (11) passing between them and sealing it. After closet being used each time, the pulling bag discs (6) feed a section of the plastic bag in which excrements are collected into the disposal receptacle (10), and a section of new plastic bag is wound round the annular seat (4), therefore cross-infection is prevented.

Description: FIELD OF THE INVENTION The present invention relates to a closet, particularly relates to a waterless closet that does not need water to flush. BACKGROUND OF THE INVENTION The prior art toilet and closet need water to flush. Once there is no water or there is no enough water, it will cause serious environmental pollution. Accordingly, the prior art toilet and closet are not suitable for use in a waterless place, in a place lacking water or in a movable toilet. To improve the prior art closet, US-A-4025969 discloses a sanitary closet that may be cleaned automatically without using water. This closet consists of a closet, a transmission case under the closet and a disposal container. There are two guiding wheels located inside the transmission case, which are used to feed downwards and tightly close a plastic hose, each of the wheel may rotate in opposite direction respectively. A tube-shaped plastic hose goes into the upper entrance of the closet from the bottom of an annular seat fixed on the top of the closet, and then through the guiding wheels and the entrance of the disposal container gets into the disposal container. The drawback of the prior art is that the annular seat can not meet the requirements of sanitation and likely causes cross infection among users. US-A-3619822 discloses a sanitary closet with a container with a lid, an annular bowl and a seat. A continuous tubular member or film is withdrawn from an annular storage container through a slot and over the seat to provide a replaceable seat cover and bowl liner which will be replaced with each use. The annular storage container is positioned around annular bowl member. The tubular film is engaged within the jaws of the sealing and advancing mechanism. The sealing and advancing mechanism consists of a bar connected to a moving link chain. Upon raising and lowering of the lid, a suitable switch is opened and closed to thereby energize the sealing and advancing mechanism. THE SUMMARY OF THE INVENTION Therefore, the objective of this invention is to provide a waterless closet assembly that needs no water and can meet the requirements of sanitation. The waterless closet assembly in accordance with the present invention includes a closet having an upper entrance, a lower exit, an annular seat located on the top of the upper entrance, a long tube-shaped plastic hose, and a step-by-step feeding device. One end of the plastic hose is located outside the closet. The other end of the plastic hose goes over the upper surface of the annular seat, and passes through the inside of the inlet of the closet and the step-by-step feeding device, then is fed into the disposal container from its entrance. An expansion ring is located in the closet under the annular seat. The plastic hose goes into the closet from its upper entrance and goes downwards passing through the expansion ring. The diameter of the expansion ring is bigger than the entrance, so the plastic hose can be opened and will not stick together to affect the use of the closet. After the closet being used each time, the step-by-step feeding device feeds the used section of the plastic hose into the disposal container and a new section of the plastic hose is then put on the annular seat to keep the closet clean and to prevent the users from cross infection. The further merits and details of this invention are given with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS Figure 1 is a cross-section view of the waterless closet assembly in accordance with this invention; Figure 2 is a cross-section view cut along A---A; Figure 3 is a cross-section view cut along C---C. DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in Fig 1,the waterless closet assembly mainly comprises a closet, a step-by-step feeding device and a disposal container. The closet 1 has an upper entrance 2, a lower exit 3 and an annular seat for users fixed on the top of the upper entrance 2. A step-by-step feeding device feeding downwards a plastic hose is located in a transmission case 5 under the closet 1. The step-by-step feeding device includes a pair of rollers 6 mounted on the support 23 and a step-by-step driving means. The transmission case 5 has an upper entrance 8 and a lower exit 9. A disposal container 10 having an upper entrance connected with the lower exit 9 of the transmission case 5 is located under the transmission case 5. One end of a long tube-shaped plastic hose, which can dissolve in nature, is located outside the closet 1 and in a barrel 12 put round the closet 1. The other end of the plastic hose goes over the upper surface of the annular seat 4 and goes into the inside of the closet 1 through the upper entrance 2 of the closet 1; the other end of the plastic hose then goes into the transmission case 5 from the lower exit 3 of the closet 1, and finally goes into the disposal container through the rollers 6 and the lower exit 9 of the transmission case 5. As shown in Fig 2, each roller in accordance with this invention is bigger at the two ends and thinner in the middle part. The plastic hose is clamped tightly by the two rollers; accordingly, the plastic hose is pulled downwards when the rollers turn. Because of said shape of the rollers, the excrement in the plastic hose easily gathers between the thinner parts of the two rollers under the gravitational force. As shown in Fig 3, a clamping plate 12a and a clamping plate 12b are fixed on the two rollers respectively. The shape of the two plates are just the reversed one of the two rollers. The outer edges 13 of the clamping plates 12a and 12b clamp the plastic hose 11 passing through. The rollers 6 are driven by a step-by-step feeding device. In accordance with this embodiment of the invention, the step-by-step feeding device includes a worm, worm gears and transmission gears and the step-by-step motor (which is not shown in the drawings). The step-by-step motor drives the two rollers 6 to turn half circle in reverse direction respectively each time. The switch may be fixed in a proper place, such as in the place under the annular seat 4. After using the toilet, the user may turn on the switch once. Thus the rollers 6 pull down the plastic hose for a certain length and the section of the plastic hose with excrement will fall into the disposal container, while the clamping plate 12a and the clamping plate 12b turn half circle respectively and meet together to seal the plastic hose 11. Heating devices can be added and fixed on the clamping plate 12 a and clamping plate 12b to seal the opening of the plastic hose. Each roller may have one clamping plate, so when the switch of the step-by-step feeding device is turned on, the rollers 6 turn one circle, and complete the action of pulling down and clamping the plastic hose 11. The step-by-step feeding device may be driven not only by a motor but also by a user's stepping on a pedal of the device. A sealing plate 17 is fixed in the transmission case 5 so as to keep the rollers 6 mounted in the case and separates the rollers from the step-by-step feeding device. Wheels 18 are fixed on the bottom of the disposal container so that the whole closet assembly can be moved easily. As shown in Fig 1, an expansion ring 14 is located in the closet 1 under the annular seat 4, the plastic hose 11 goes into the closet from its upper entrance and goes downwards passing through the expansion ring 14. The diameter of the expansion ring 14 is bigger than the entrance 2, so the plastic hose 11 can be opened and will not stick together to affect the use of the closet. A bigger plastic hose may be used in order to shorten the distance between the entrance 2 and the rollers 6 so that the closet is not too high. A number of guide wheels 15 can be fixed on the expansion ring 14 to guide the plastic hose 11, which helps the plastic hose go down.

Claims: A waterless closet assembly comprising a closet (1) with an upper entrance (2) and a lower exit (3), an annular seat (4) on the top of the upper entrance (2), a long tube-shaped plastic hose (11), a step-by-step driving device (6) under the lower exit (3) of the closet (1), and a disposal container (10) with an entrance under the step-by-step driving device (6), wherein one end of the plastic hose (11) is located outside the closet (1) and the other end of the plastic hose (11) goes over the upper surface of the annular seat (4) and passes through the inside of the inlet of the closet (1) and the step-by-step feeding device (6), then is fed into the disposal container (10) from its entrance, characterized by an expansion ring (14) under the annular seat (4) and in the closet (1), wherein the diameter of the expansion ring (14) is bigger than the entrance (2) of the closet (1) and the plastic hose (11) goes to the step-by-step feeding device (6) over the outer surface of the expansion ring (14). A waterless closet assembly as defined in claim 1, wherein a number of guiding wheels (15) that are used to guide the plastic hose (11) are fixed on the expansion ring (14). A waterless closet assembly as defined in claim 1 or 2, wherein the step-by-step feeding device includes a pair of rollers (6) placed side by side for pulling downwards the plastic hose (11) wherein each roller is bigger at both ends and thinner in the middle part and a stepping motor, and the hose (11) goes though between the two rollers (6) and the ends of the two rollers hold tightly the plastic hose. A waterless closet assembly as defined in claim 3, wherein a clamping plate (12a, 12b) is fixed on one side of each roller (6), the shape of the clamping plate (12a, 12b) is the reversed shape of the roller (6) so that it has an extending outer edge (13) along the axial, and when the rollers (6) stop turning, the clamping plates meet together to tightly clamp the platic hose (11) passing through, the step-by-step feeding device drives the rollers (6) to turn a circle in reverse direction respectively each time. A waterless closet assembly as defined in claim 3, wherein each roller (6) has two clamping plates (12a, 12b) that are fixed on the opposite sides of the roller (6), the shape of each clamping plate (12a, 12b) is the reversed shape of each roller (6) so that each clamping plate (12a, 12b) has an extending outer edge (13) along the axial, and when the rollers (6) stop turning, the outer edges of the two rollers (6) meet with each other thightly and clamp the platic hose (11) passing through, the step-by-step feeding device drives each roller (6) to turn half circle each time. A waterless closet assembly as defined in claim 4 or 5, wherein a heating device is fixed on the clamping plates (12a, 12b) to seal the plastic hose (11). A waterless closet assembly as defined in claim 6, further comprising a barrel (12) put round the closet (1), and the part of the plastic hose (11) that is outside the closet (1) is located in the barrel (12). A waterless closet assembly as defined in claim 4 or 5, wherein the step-by-step feeding device (6) is located in the transmission case (5), the transmission case (5) has an upper entrance (8) and a lower exit (9), the upper entrance (8) is connected with the the lower exit (3) of the closet (1) and the lower exit (9) is connected with the entrance of the disposal container (10). A waterless closet assembly as defined in claim 8, wherein there are wheels (18) fixed on the bottom of the disposal container (10). A waterless closet assembly as defined in claim 4 or 5, wherein the step-by-step feeding device (6) is powered by an electrical motor. A waterless closet assembly as defined in claim 4 or 5, wherein said step-by-step feeding device (6) is powered by user stepping on the pedal of the device.

Inventors: HE ENGLONG, HE, ENGLONG
Applicants: HE ENGLONG, HE, ENGLONG
Application year: 1996
Main classification: A47K11
IPC codes: A47K11