Title of Invention

A DEVICE FOR CLEANSING A TOILET BOWL PROVIDED WITH A FLUSHING CISTERN

Abstract

ABSTRACT A device for cleansing a toilet bowl provided with a flushing cistern comprising a housing accomodable in the flushing cistern; a flexible air bulb provided in airtight fit over the open top of the housing; cleansing material placed within the housing; a conduit located within the housing, the inlet end of the conduit being disposed within the housing, while the outlet end terminates outside the housing near the outlet of the said cistern; a cowl covering the bulb at its top and side; and two stops engaging with the cowl for limiting the upward travel of the cowl, such that when the flushing operation begins the water from the cistern is let into the toilet bowl while, however, the solution of cleansing material in the housing is let into the toilet bowl only at almost the end of the flushing operation since the exit of water trom the cistern through the outlet is more forceful than that of the exit of water from the housing, thus leaving a layer of the cleansing material solution in the said bowl; and such that after flushing is complete the housing retains some solution of the cleansing material therein whereby the next flushing, even if performed immediately on the cistern being refilled, will be provided with enough concentration of the cleansing material solution in the housing, to repeat the performance.

Full Text

This invention relates to a device for cleansing a toilet bowl provided with a flushing cistern and, at the same time, for ensuring economy in the use of the cleansing material intended for keeping the toilet bowl clean, deodorised and hygienic. This invention ensures the optimum use of cleansing material, such as, chlorine-detergent tablets normally used in toi\et bow\ cleansing operations, in contrast to the conventional use of such cleansing material by depositing the same into ^e Hushing cistern and allowing the tablets to dissolve in the cistern, resulting in avoidable waste. The presence of the cleansing material in the toilet bowl, after the flushing action, is indicated by the colour of such material, such as, the colour blue. In the existing system using a cleansing material, the tablets are plsujed at the bottom of the flushing cistern to enable the same to be dissolved in the water in the cistern, the dissolved material exiting into the toilet bowl during the flushing action. Consequently, more of the cleansing material than is required for the purpose is wasted and the cost of replenishing the cistern with fresh cleansing material from time to time results in avoidable expense to the user. This invention therefore proposes a device as aforesaid which restricts the dissolution of the cleansing material within realistic limits, so much so that the dissolved material is sufficient to achieve the cleansing action without most of it merely going down the drain unused. The device proposed herein is simple in its construction, while being effective in operation. It can be installed and used even by a lay person with little instruction for its operation. The device proposed herein lends itself to mass manufacturing techniques, so much so that it is capable of being made available to the consumer at a reasonable cost. The device is durable in use, especially when it is made of non-metallic substances which is corrosion resistant. The device for cleansing a toilet bowl provided with a flushing cistern, according to this invention, comprises a housing accomodable in the flushing cistern; a flexible air bulb provided in airtight fit over the open top of the housing; cleansing material placed within the housing; a conduit located within the housing, the inlet end of the conduit being disposed wiliiin the housing, while the outlet end terminates outside the housing near the ouflet of the said cistern; a cowl covering the bulb at its top and side; and two stops engaging with the cowl for limiting the upward travel of the cowl, such that when the flushing operation begins the water from the cistern is l«t into the toilet bowl while, however, the solution of cleansing material in the housing is let into the toilet bowl only at almost the end of the flushing operation since the exit of water from the cistern through the outlet is more forceful than that of the exit of water from the housing, thus leaving a layer of the cleansing material solution in the said bowl; and such that after flushing is complete the housing retains some solution of the cleansing material therein whereby the next flushing, even if performed immediately on the cistern being refilled, will be provided with enough concentration of the cleansing material solution in the housing, to repeat the performance. This invention will now be described with reference to the accompanying drawings which illustrate by way of example, and not by way of limitation, one of possible embodiments of the device proposed herein Fig-1 illustiuting the embodiment in sectioaal elevation And Fig. 2 illustrating the said embodiment in sectional elevation accommodated in a flushing cistern connected to a toilet bowl. The device comprises a housing H accomodable in the flushing cistern F. A flexible air bulb B is provided in airtight fit over the open top T of the housing H. Cleansing matecial, such as, a detergent cake or tablet D, soluble in water, which releases chlorine on dissolution in water, is placed within the housing H. A conduit C is partly located within the housing H, one end E of the conduit being disposed within the housing while the other end G terminates outside the housing, within the cistern F, near the outlet J of the said cistern. A cowl K covers the bulb B at its top and side. Two stops L engage with the cowJ for limiting the upward travel of the cowl K. The housing is sufficiently weighted at its bottom to keep it stable when placed inside the flushing cistern F. According to one of its versions the portion of the conduit C within the housing is formed into a siphon as indicated at M. When the cistern F is filled with water, the housing H also gets filled up by water from the said cistern entering the housing through the conduit C. As the water level rises in the housing H, the air bulb B gets inflated, since the air in the said bulb is compressed by the rising water column. The cowl K also moves upwards along with the upward rise of the inflating bulb B until restrained from further upward movement by the stops L. The cowl K not only serves as a retaining cover for the bulb B but also seives to build up pressure within the said bulb during the upward rise of the water level in the housing. As the water reaches the maximum level in the cistern F the float mechanism Q in the cistern F cuts off the water supply to the said cistern. The housing H is now filled with water with the air in the bulb B in a compressed state. Simultaneously, the cleansing tablet D comv\\enc«s to dissolve in the water in the housing. In this connection, it is noteworthy that the tablet D is exposed only to the limited volume of water that is contained in the housing H and is not exposed to the whole body of water in the cistern F. As a result, a given percentage of concentration of the cleansing material in the water in the housing is arrived at sooner than possible in the larger volume of water in the cistern F. Since the water in the housing is in equihbrium with respect to the water outside the housing, the cleansing material solution inside the housing is retained therein until a flushing action is commenced. Large scale dissolution of the tablet D, as when it is exposed to the entire volume of water in the cistern F, is thus eliminated, enhancing the life of the tablet. When the flushing operation begins the water from the cistern F exits into the toilet bowl P. However, the solution of cleansing material in the housing H exits into the toilet bowl only at a/most the end of the flushing operation since the exit of water from tlie cistern F through the outlet J is more forcefuJ than that of the exit of water fixjni the housing H through tiie said outlet J. After flusliing is complete the housing H retains some of the solution of cleansing material and, therefore, the next flushing, even if performed immediately, on the cistern being refilled, will be provided with enough concentration of the cleansing material, to repeat the performance described above. It will be appreciated that various other embodiments of the device proposed herein are possible without departing from the scope and ambit of this invention. I Claim: 1 A device for cleansing a toilet bowl provided with a flushing cistern comprising a housing accomodable in the flushing cistern; a flexible air bulb provided in airtight fit over the open top of the housing; cleansing material placed within the housing; a conduit located within the housing, the inlet end of the conduit being disposed within the housing , while the outlet end terminates outside the housing near the outlet of the said cistern; a cowl covering the bulb at its top and side; and two stops engaging with the cowl for limiting the upward travel of the cowl, such that when the flushing operation begins the water from the cistern is let into the toilet bowl while, however, the solution of cleansing material in the housing is let into the toilet bowl only at almost the end of the flushing operation since the exit of water from the cistern through the outlet is more forceful than that of the exit of water from the housing, thus leaving a layer of the cleansing material solution in the said bowl; and such that after flushing is complete the housing retains some solution of the cleansing material therein whereby the next flushing, even if performed immediately on the cistern being refilled, will be provided with enough concentration of the cleansing material solution in the housing, to repeat the performance. 2.A device as claimed in Claim 1 wherein the housing is stably placed within the said cistern. 3.A device as claimed in any one of the preceding Claims wherein the housing is weighted at its bottom for keeping it stably in the said cistern. 4. A device as claimed in any one of the preceding Claims wherein the cleansing material is in the form of a cake or tablet. 5. A device as claimed in any one of the preceding Claims wherein the portion of the conduit within the housing is formed into a siphon. 6. A device for cleansing a toilet bowl provided with a flushing cistern substantially as herein described with reference to, and as illustrated in, the accompanying drawings. I

Documents:

2159-CHE-2006 AMANDED CLAIMS 11-02-2010.pdf

2159-CHE-2006 CORRESPONDENCE OTHERS 11-02-2010.pdf

2159-che-2006 abstract.pdf

2159-che-2006 claims 02-09-2009.pdf

2159-che-2006 claims.pdf

2159-CHE-2006 CORRESPONDENCE PO.pdf

2159-che-2006 correspondence-others.pdf

2159-che-2006 description (complete) 02-09-2009.pdf

2159-che-2006 description(complete).pdf

2159-che-2006 drawings 02-09-2009.pdf

2159-che-2006 drawings.pdf

2159-CHE-2006 EXAMINATION REPORT REPLY RECIEVED 02-09-2009.pdf

2159-che-2006 form-1 02-09-2009.pdf

2159-che-2006 form-1.pdf

2159-che-2006 form-18.pdf

2159-CHE-2006 FORM-2 02-09-2009.pdf

2159-che-2006 form-26.pdf

2159-CHE-2006 OTHER DOCUMENT 02-09-2009.pdf