Passive liquid waste rerouting system for toilets

Abstract

The present invention relates to a passive liquid waste rerouting system for toilets, comprising: a) a sloped tray (101) detachably attached to a toilet seat; b) a mesh (102); c) a lifting mechanism; and d) a collecting mechanism; wherein the sloped tray comprises a surface inclined at an angle sufficient to facilitate gravity-driven liquid waste diversion; and an outlet to allow fluid to pass through from the sloped tray into the collecting mechanism; wherein the mesh is detachably attached above the surface of the sloped tray; wherein the lifting mechanism optionally connected to the sloped tray; and wherein the collecting mechanism is configured to receive liquid waste from the sloped tray and direct it out of the system.

Description

[0001] PASSIVE LIQUID WASTE REROUTING SYSTEM FOR TOILETS

[0002] TECHNICAL FIELD

[0003] The present invention relates to sanitation and water conservation technologies or system for toilets, and more particularly to a passive liquid waste rerouting system for toilets.

[0004] BACKGROUND ART

[0005] The present invention relates to water-saving toilet technologies, specifically to a passive liquid waste re-routing system designed to significantly reduce water consumption for urine disposal. Conventional flush toilets are among the largest domestic consumers of water. In India, standard toilets typically use 10-12 liters of water per flush, with older models consuming up to 15-20 liters, while globally, conventional toilets can use 6-13 liters per flush. Even modem dual-flush or low-flow toilets, although designed to conserve water, still use 3-4 liters per flush for liquid waste, which is substantially higher than the actual requirement for hygienic urination. Excessive water use results in increased utility costs, stresses water resources, and contributes to overloading municipal sewage systems, particularly in densely populated urban areas facing water scarcity.

[0006] Studies and reports from authoritative sources highlight the magnitude of water usage and the benefits of water-saving systems. In India, the Central Public Health and Environmental Engineering Organisation (CPHEEO) reports standard toilet water use of 10-12 liters per flush, while dual -flush or low-flow retrofit systems can reduce water usage to 1-2 liters per urine flush. The National Institute of Urban Affairs (NIUA) has indicated that implementing watersaving retrofit devices in households can reduce water use by 50-90%, depending on usage patterns. Globally, UNESCO’s World Water Assessment Programme (WWAP, 2017) reports that older toilets consume 6-13 liters per flush, whereas low-flow or urine-diverting systems can reduce flush volumes to 0.5-1.5 liters. The U.S. Environmental Protection Agency (EPA, WaterSense Program) notes that standard toilets consume 1.6 gallons per flush (~6 liters), while high-efficiency or retrofit devices can reduce this to 1.28 gallons (~4.8 liters) or lower. The European Environment Agency (EEA, 2016) reports similar figures for countries such as Germany and Switzerland, showing savings of 70-90% for urine-specific diversion systems.

[0007]

[0008] Several prior inventions have attempted to address water conservation in toilets. Urinediverting dry toilets (UDDTs) and urine-diversion flush systems achieve water savings by separating liquid and solid waste, but often require significant structural changes to toilet bowls or plumbing and demand behavioural adjustments from users. Retrofit urine-diversion devices exist but typically involve internal funnels or mechanisms that may be difficult to install, maintain, and clean, and do not always prevent splash-back or odor effectively. Integrated systems such as WO2018082514A provide flushing-free designs but are generally intended for new constructions and cannot be retrofitted into existing toilets. Other patents, including US9737180B2, EP1135561B1, and CN106175549B, describe urine diversion devices, yet most either require complex modifications or fail to achieve ultra-low water usage and broad applicability for lay users.

[0009] There is therefore a critical need for a simple, cost-effective, durable, and easy-to-install solution that significantly reduces water usage for urine disposal, can be adopted by laypersons without specialized skills, and is suitable for retrofitting existing toilets as well as incorporation in new builds. The present invention provides a passive liquid waste re-routing system that addresses these needs by using a sloped tray, anti-splash mesh, and flexible conduit to divert urine efficiently, requiring less than 150-200 ml of water per flush. The system is hygienic, easy to maintain, and compatible with a variety of toilet types, including floor-mounted and wall-mounted models.

[0010] By reducing water volume per flush, the invention also reduces the hydraulic load on municipal sewage systems and wastewater treatment plants, improving operational efficiency and lowering energy and chemical requirements. The system’s cost-effectiveness, simplicity, and durability, combined with high efficiency, make it a practical and sustainable solution forhouseholds, offices, public facilities, and metro cities facing water scarcity and high wastewater management challenges.

[0011] OBJECT OF THE INVENTION

[0012] The main object of the present invention is to provide a simple passive liquid waste rerouting system for toilets which does not require significant structural changes.

[0013] Another object is to overcome the deficiencies associated with passive liquid waste rerouting technologies with the present systems.

[0014] In one object, the present invention provides a passive liquid waste rerouting system for toilets, having arrangement of:

[0015] a) a sloped tray detachably attached to a toilet seat;

[0016] b) a mesh;

[0017] c) a lifting mechanism; and

[0018] d) a collecting mechanism;

[0019] Another object of the present invention is to provide advantages in terms of a simple, cost-effective, durable, and easy-to-install solution that significantly reduces water usage for urine disposal which is lacking over existing solutions.

[0020] Another object of the present invention is to reduce water usage by about 70-95% of the total daily requirement of nominal water flushing.

[0021] DISCLOSURE OF THE INVENTION

[0022] The first aspect of the present invention is to provide a passive liquid waste rerouting system for toilets.

[0023] Another aspect of the present invention is to overcome the deficiencies associated with passive liquid waste rerouting technologies with the present systems.

[0024] Another aspect of the present invention provides a passive liquid waste rerouting system for toilets, having arrangement of:

[0025] a) a sloped tray detachably attached to a toilet seat;

[0026] b) a mesh;

[0027] c) a lifting mechanism; andd) a collecting mechanism;

[0028] Yet another aspect of the present invention is to provide advantages in terms of a simple, cost-effective, durable, and easy-to-install solution that significantly reduces water usage for urine disposal which is lacking over existing solutions.

[0029] Yet another aspect of the present invention is to reduce water usage by about 70-95% of the total daily requirement of nominal water flushing.

[0030] BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In the accompanying drawings,

[0032] Figure 1 illustrates top, front, and side views of the liquid waste sloped tray (101), showing its subcomponents, including an anti-splash mesh (102) positioned above the tray surface and a hinge mechanism (103) by which the sloped tray (101), is attached to a toilet seat (901).

[0033] Figure 2 is a sectional view showing the integrated passive liquid waste diversion system retrofitted onto a flush toilet, with the sloped tray (101) attached to the toilet seat (901) via the hinge mechanism (103), the adhesive tube holder (201) fixed to the inner rim of the bowl (902), and the extension tube (304) extending through the toilet trap (903), while the toilet lid (904) and other standard components, such as the flush tank and mounting structures, remain unmodified.

[0034] The drawings also implicitly represent the optional embodiments described herein, including a self-cleaning mechanism integrated into the tray or conduit, an odor-removing mesh positioned above the tray, and surface coatings applied to the tray and / or mesh to reduce urine or water retention and prevent chemical deposits, all of which function in conjunction with the primary components to enhance hygiene, water conservation, and user convenience.

[0035] DETAILED DESCRIPTION OF THE INVENTION

[0036] The following description outlines various embodiments of systems and methods for passive liquid waste rerouting system for toilets.

[0037] For the purpose of this invention, the term "user" means an individual utilizing the toilet system for urination, for whom the system is designed to provide a hygienic, low-water-use, and convenient experience.For the purpose of this invention, the term "passive liquid waste rerouting system" means a system designed to divert liquid waste from a user in a toilet, reduce water usage during flushing, and maintain hygiene without requiring powered components.

[0038] For the purpose of this invention, the term "sloped tray" means a tray having an inclined surface mounted on or above a toilet seat, configured to collect and guide liquid waste by gravity toward an outlet.

[0039] For the purpose of this invention, the term “sloped tray” and “tray” are used synonymously or interchangeably have same meaning.

[0040] For the purpose of this invention, the term "surface inclined" or “a sloped surface” means the inner surface of the sloped tray, arranged at an angle sufficient to facilitate gravity-driven flow of liquid waste toward the outlet.

[0041] For the purpose of this invention, the term "detachably attached to a toilet seat" means that the sloped tray or any component of the system can be secured to a toilet seat in a removable manner, allowing easy installation and cleaning.

[0042] For the purpose of this invention, the term "mesh" means an anti-splash structure positioned above the surface of the tray, comprising apertures to reduce droplet velocity and minimize splash-back during use.

[0043] For the purpose of this invention, the term "odor-removing mesh" means a mesh positioned above or within the tray assembly that incorporates materials or coatings capable of neutralizing or reducing odors generated by liquid waste.

[0044] For the purpose of this invention, the term “mesh”, “anti-splash mesh”, and “odor removing mesh” are used synonymously or interchangeably have same meaning.

[0045] For the purpose of this invention, the term "lifting mechanism" means a mechanism optionally connected to the sloped tray, configured to adjust the position or angle of the tray to suit user convenience.

[0046] For the purpose of this invention, the term "collecting mechanism" means a component comprising a funnel and flexible conduit configured to receive liquid waste from the tray outlet and direct it safely into the toilet trap or waste pipe.For the purpose of this invention, the term "height adjusting mechanism" means a feature integrated with the tray or lifting mechanism that allows the distance between the sloped surface and the toilet seat to be adjusted according to a user’s requirement.

[0047] For the purpose of this invention, the term "self-cleaning mechanism" means a feature integrated into the tray or flexible conduit that automatically or manually rinses the surfaces to remove residual liquid, prevent odor buildup, and maintain hygiene.

[0048] For the purpose of this invention, the term “flushing mechanism” means any system, device, or method configured to supply a controlled amount of water or other fluid to the sloped tray and collecting conduit to remove liquid waste after use, maintain hygiene, prevent residue accumulation, and optionally operate in conjunction with a self-cleaning mechanism.

[0049] In an embodiment of the invention, a passive liquid waste rerouting system for toilets, comprising:

[0050] a) a sloped tray detachably attached to a toilet seat;

[0051] b) a mesh;

[0052] c) a lifting mechanism; and

[0053] d) a collecting mechanism.

[0054] In an embodiment of the invention the sloped tray has a height adjusting mechanism in such a way that the distance between the seat and the sloped surface be changed or adjusted to a user requirement.

[0055] In an embodiment of the invention the sloped tray comprises a surface inclined at an angle sufficient to facilitate gravity-driven liquid waste diversion; and an outlet to allow fluid to pass through from the sloped tray into the collecting mechanism;

[0056] In another embodiment of the invention the sloped tray can be made up of a material selected from the group of Urea formaldehyde (UF), Polypropylene (PP), High-density polyethylene (HDPE), Polycarbonate (PC), Acrylonitrile butadiene styrene (ABS), Polystyrene (PS), Polyvinyl chloride (PVC), Polyethylene terephthalate (PET), Polytetrafluoroethylene (PTFE), Polyvinylidene fluoride (PVDF), Silicone-coated polymers, Fluoropolymer-coated plastics, any other rigid, water-resistant polymer.

[0057] In an embodiment of the invention, the sloped tray and / or seat is coated with a surface treatment that further reduces urine and water retention, minimizes adhesion of chemical deposits, andprevents formation of foul odors. The coating is durable, hydrophobic, and resistant to repeated contact with water and urine.

[0058] In an embodiment of the invention, the tray is coated with a hydrophobic material, which minimizes retention of urine or water, facilitating quick drainage and easy cleaning.

[0059] In an embodiment of the invention, the tray is designed to be detachable for cleaning, and the toilet seat may be adjustable to accommodate users of different ages and genders, including adults and children.

[0060] In an embodiment of the invention, the mesh is detachably attached above the surface of the sloped tray.

[0061] In an embodiment of the invention the mesh can be made up of a material selected from the group consisting of Stainless Steel (SS 304, SS 316), Aluminium, Brass, Copper, Nylon, Polypropylene (PP), High-density polyethylene (HDPE), Acrylonitrile butadiene styrene (ABS), Polycarbonate (PC), Polyvinyl chloride (PVC), Fluoropolymer-coated mesh, Silicone-coated mesh, Woven metal mesh, Expanded metal mesh, Perforated polymer sheets, Etched metal mesh, or any other corrosion-resistant or chemically resistant material suitable for repeated contact with water and urine.

[0062] In an embodiment of the invention, the system comprises an odor-removing mesh, which incorporates activated carbon or similar materials to neutralize odors and maintain a hygienic environment.

[0063] In another embodiment of the invention the mesh has anti splash function, wherein the antisplash mesh has apertures configured to reduce droplet velocity and minimize splash-back during use.

[0064] In another embodiment of the invention, the anti-splash mesh is fabricated from a corrosionresistant material, such as stainless steel or polymer mesh, designed to withstand frequent contact with water and urine over prolonged periods

[0065] In another embodiment of the invention, the anti-splash mesh can have various geometric configurations, including rectangular, square, hexagonal, or circular apertures. The size and shape of the mesh are optimized depending on urine volume and flow characteristics. The mesh may also be coated with odor-controlling materials to further reduce malodour.In an embodiment of the invention, the lifting mechanism optionally connected to the sloped tray.

[0066] In an embodiment of the invention, the lifting mechanism for the sloped tray can comprise just the surface of the tray itself, allowing a user to tilt or reposition the tray manually.

[0067] In an embodiment of the invention, the lifting mechanism can include a handle attached to the tray, configured to allow a user to lift or adjust the tray easily.

[0068] In an embodiment of the invention, the lifting mechanism can include an additional mechanical system, such as gears, pulleys, or spring-loaded components, to facilitate smooth raising and lowering of the tray.

[0069] In an embodiment of the invention, the lifting mechanism can be hand-operated, foot-operated, or leg-operated, allowing the user to adjust the tray without bending or touching the tray surface directly.

[0070] In an embodiment of the invention, the lifting mechanism can be button-operated, voice-activated, remote-controlled, or sensor-actuated, enabling automatic or semi-automatic adjustment of the tray.

[0071] In an embodiment of the invention, the lifting mechanism can include electromagnetic, hydraulic, pneumatic, or motorized actuation, allowing precise adjustment of the tray position for users with reduced mobility.

[0072] In an embodiment of the invention, the lifting mechanism can include spring-assisted, counterweight, or telescopic mechanisms, providing controlled and balanced movement of the tray with minimal user effort.

[0073] In an embodiment of the invention, the lifting mechanism can include manual lever systems, ratchet mechanisms, or rotational cams, allowing discrete incremental adjustments to the tray height or inclination.

[0074] In an embodiment of the invention, the lifting mechanism can include any combination of the above, allowing the tray to be adjusted according to user preference, toilet type, or accessibility requirements, while maintaining stability, hygiene, and ease of use.

[0075] In an embodiment of the invention, the collecting mechanism comprises a funnel and a flexible tube.In an embodiment of the invention the flexible tube has an internal diameter sufficient to allow fluid passage without interfering with solid waste disposal in the toilet trap, and the length and diameter of the tube are adjustable to accommodate different toilet designs.

[0076] In an embodiment of the invention, the tray and collecting mechanism are fully detachable and can be cleaned using mild, pet-safe cleaning solutions, allowing the system to be maintained without exposing pets to harsh chemicals.

[0077] In an embodiment of the invention, the collecting mechanism comprises a funnel and flexible tube configured to receive liquid waste from the sloped tray and guide it into the toilet trap or waste pipe, ensuring uninterrupted flow and preventing splash-back.

[0078] In an embodiment of the invention, the collecting mechanism is fabricated from rigid, water-resistant, or corrosion-resistant materials, including plastics, polymers, metals, or coated materials, providing durability, chemical resistance, and hygiene during repeated use.

[0079] In an embodiment of the invention, the collecting mechanism includes a residual water column within the flexible tube, acting as a barrier to prevent ingress of sewer gases and maintain odor control.

[0080] In an embodiment of the invention, the collecting mechanism is designed to be modular and detachable, allowing easy cleaning, maintenance, and replacement of the funnel or flexible conduit without disassembling the entire system.

[0081] In an embodiment of the invention, the collecting mechanism can incorporate valves, check valves, or one-way gates, allowing controlled flow of liquid waste into the trap while preventing backflow or clogging.

[0082] In an embodiment of the invention, the collecting mechanism can be integrated with a self-cleaning mechanism, such that minimal water or cleaning solution passes through the funnel and flexible tube to rinse residual waste after each use.

[0083] In an embodiment of the invention, the collecting mechanism can include adjustable or extendable flexible tubes, allowing the system to be retrofitted to toilets of different heights, configurations, and trap positions while maintaining efficient liquid flow.In an embodiment of the invention, the collecting mechanism can be combined with odorremoving features, such as activated carbon inserts or mesh coverings, to enhance hygiene and minimize unpleasant smells during use.

[0084] In an embodiment of the invention, the passive liquid waste rerouting system can include a flushing mechanism, configured to flush the liquid waste from the sloped tray and collecting conduit after use.

[0085] In an embodiment of the invention, the flushing mechanism can comprise manual flushing methods, such as pouring water from a mug or bucket, allowing a user to flush liquid waste directly into the collecting mechanism.

[0086] In an embodiment of the invention, the flushing mechanism can include automatic or semiautomatic internal flushing systems, such as gravity-fed water channels, pump-assisted water supply, or sensor-activated valves, integrated with the tray or collecting conduit.

[0087] In an embodiment of the invention, the flushing mechanism is operably connected with the self-cleaning mechanism, such that the act of flushing triggers or complements the self-cleaning process, rinsing the sloped tray and flexible conduit to remove residual liquid and maintain hygiene.

[0088] In an embodiment of the invention, the flushing mechanism can be user-selectable, allowing a user to choose manual flushing, automatic flushing, or a combination of both, thereby providing flexibility depending on available water sources, user preference, or toilet type.

[0089] In an embodiment of the invention, the flushing mechanism is designed to use minimal water, typically under 150-200 ml per use, while ensuring that the tray and conduit are sufficiently rinsed, maintaining hygiene and reducing overall water consumption.

[0090] In an embodiment of the invention, the flushing mechanism can be integrated into standalone toilet systems or retrofittable systems, ensuring that the benefits of the passive urine-diversion system and self-cleaning mechanism are maintained across different toilet configurations. In an embodiment of the invention, the systems and methods are designed to significantly reduce water usage for urination while maintaining hygiene, durability, and ease of use.In an embodiment of the invention, the systems and methods are suitable for both retrofit installation on existing toilets and incorporation into new toilet designs, providing a practical, cost-effective, and environmentally sustainable solution for water conservation.

[0091] In another embodiment of the invention, the system allows flushing with a minimal volume of water, typically less than 150-200 ml per use, thereby achieving substantial water savings of 85-95% per urination flush.

[0092] In an embodiment of the invention a coating or surface treatment on the tray and / or mesh to reduce urine or water retention and prevent chemical deposits, allowing easy maintenance of hygiene and odor control

[0093] In an embodiment of the invention, the system includes a self-cleaning mechanism, wherein a small rinse of water automatically flows through the tray and flexible conduit after each use. In an embodiment of the invention, the flexible conduit connecting the tray outlet to the toilet trap is provided with adjustable lengths and internal diameters, allowing adaptation to different toilet trap designs while maintaining efficient urine flow without interfering with solid waste passage.

[0094] In an embodiment of the invention, the system is designed for retrofit installation, allowing the tray, mesh, and flexible conduit to be attached to existing toilets without structural modifications or plumbing alterations. Installation can be performed using adhesive-based holders or clip mechanisms, making it easy for laypersons to install the system without technical skills or tools.

[0095] In an embodiment of the invention the urine diversion and flush mechanism operate passively and require no change in user behavior, making it easy for users of all ages and abilities to adopt the system without additional instructions or modifications to existing toilet use practices. In an embodiment of the invention the sloped tray comprises a sloped surface configured to guide liquid waste, the sloped surface being inclined at an angle sufficient to facilitate gravity-driven flow of liquid waste toward the tray outlet, the angle being measurable and adjustable to optimize fluid diversion and minimize splash.

[0096] Yet another embodiment of the invention, the seat of the passive liquid waste rerouting system can be coupled with an existing urine-diverting dry toilet (UDDT), allowing the sloped tray toguide liquid waste efficiently while the existing UDDT handles solid waste, thereby enhancing user convenience and water-free operation.

[0097] Yet another embodiment of the invention, the sloped tray and seat assembly can be detachably mounted on the seating portion of an existing UDDT, providing a gravity-assisted urine diversion path, reducing splash, and improving hygiene without requiring modification of the underlying UDDT structure.

[0098] Yet another embodiment of the invention, the seat with integrated tray and mesh can be retrofitted to multiple models of UDDT, where the tray outlet is configured to direct urine into a collection or diversion chamber of the UDDT, enhancing overall efficiency and minimizing odor.

[0099] Yet another embodiment of the invention, the tray can include a flexible conduit that connects to the urine collection component of an existing UDDT, allowing the tray to act as a low-water or passive liquid diversion module, making the UDDT more user-friendly for new or casual users.

[0100] Yet another embodiment of the invention, the seat and tray assembly can be provided as a modular attachment kit, allowing existing UDDT systems to benefit from splash reduction, easier cleaning, and optional self-cleaning or odor-control features, thereby increasing adoption and hygiene in shared or community toilets.

[0101] Yet another embodiment of the invention, the sloped tray can be configured with adjustable height and inclination when coupled with an existing UDDT, enabling adaptation to different UDDT models, user sizes, and local ergonomic preferences, improving both usability and user satisfaction.

[0102] In an additional embodiment of the invention, the passive liquid waste rerouting system can be integrated along with a toilet as a single, standalone unit, wherein the sloped tray, anti -splash mesh, lifting mechanism, and collecting mechanism are all incorporated into the design of a new toilet, forming a complete sanitary system.

[0103] In an additional embodiment of the invention, the standalone toilet system includes a bowl, seat, lid, sloped tray, anti-splash mesh, and collecting mechanism comprising a funnel and flexible conduit, all designed together to provide gravity-assisted urine diversion, splash reduction, and minimal water usage.In an additional embodiment of the invention, the standalone system can include manual, mechanical, or automated lifting mechanisms, such as hand-operated, button-operated, voice-activated, or telescopic systems, allowing adjustment of the tray for users of different sizes, ages, or accessibility needs.

[0104] In an additional embodiment of the invention, the sloped tray, mesh, and collecting mechanism are fabricated from rigid, water-resistant, and corrosion-resistant materials, including plastics, polymers, metals, or coated materials, ensuring durability, hygiene, and repeated use.

[0105] In an additional embodiment of the invention, the standalone toilet system can incorporate optional features such as a self-cleaning mechanism, odor-removing mesh, surface coatings, or dual-height tray adjustments, enabling enhanced usability, water conservation, and hygiene for both human and pet use.

[0106] In an additional embodiment of the invention, the integrated system is designed to operate passively, requiring no sensors or electricity, while providing a complete, ergonomically optimized toilet solution that combines the benefits of urine diversion, water savings, and easy maintenance.

[0107] In an embodiment of the invention, the collecting mechanism of the passive liquid waste rerouting system is configured to maintain a residual water column within the flexible tube, funnel, or conduit, positioned between the sloped tray outlet and the toilet trap. The retained water acts as a seal, preventing the ingress of sewer gases into the toilet environment while still allowing liquid waste to flow smoothly through the conduit.

[0108] In an embodiment of the invention, the water column is maintained passively by the design of the outlet, funnel, and tube geometry, ensuring that a small amount of water remains in the lowest section of the collecting mechanism after flushing or rinsing, without requiring any additional valves or mechanical components.

[0109] In an embodiment of the invention, the retained water column can be replenished during cleaning or minimal flushing, using approximately 100-150 ml of water from a handheld bidet, sprayer, or water mug, thereby restoring the gas barrier after each use while maintaining hygiene.In an embodiment of the invention, the water column retention is combined with the selfcleaning mechanism, ensuring that the conduit and tray are rinsed while the gas-sealing water barrier is preserved, preventing odor and maintaining a hygienic user environment.

[0110] In an embodiment of the invention, the height, diameter, and slope of the collecting conduit are optimized to stably retain the water column under normal usage conditions, even in households with varying water pressures or flush volumes, ensuring consistent prevention of sewer gas entry.

[0111] In an embodiment of the invention, upon urination on the sloped tray, the liquid waste passes through the anti-splash mesh, which reduces droplet velocity and prevents splash-back. Gravity causes the liquid to flow along the inclined surface of the tray toward an outlet located at the rear end, where it enters a funnel forming part of the collecting mechanism. The evacuation tube assembly conveys the liquid through the toilet trap into the existing drainage system, ensuring unobstructed flow without interfering with solid waste disposal.

[0112] In this embodiment, the tray can be cleaned by rinsing with approximately 100-150 ml of water, which can be supplied using a handheld bidet or sprayer, commonly available in most toilet installations, or manually using a water mug. The rinsing ensures that all urine remnants are removed from the tray and conduit, while simultaneously maintaining a residual water column within the tube, which blocks the ingress of sewer gases and preserves hygiene

[0113] In an embodiment of the invention, a method for diverting and conserving liquid waste in a toilet system comprises the following steps:

[0114] 1. Attaching the passive liquid waste rerouting system to a toilet seat, wherein the system includes a sloped tray, mesh, lifting mechanism, and collecting mechanism.

[0115] 2. Optionally adjusting the height of the sloped tray using a height adjusting mechanism to position the tray at a distance suitable for the user.

[0116] 3. Passing liquid waste from the user onto the sloped surface of the tray, such that the liquid flows by gravity toward the tray outlet while passing through the anti-splash mesh to reduce droplet velocity and prevent splashing.

[0117] 4. Diverting the liquid waste from the tray outlet into the collecting mechanism, which includes a funnel and flexible conduit that guides the liquid into the toilet trap or waste Pipe-5. Flushing the liquid waste using a minimal amount of water, sufficient to clear the tray and conduit, thereby reducing water consumption while maintaining hygiene.

[0118] 6. Optionally, employing a self-cleaning mechanism integrated into the tray or conduit to automatically rinse residual liquid and prevent odor accumulation.

[0119] 7. Optionally, utilizing an odor-removing mesh or surface treatment on the tray or mesh to neutralize odors and maintain a hygienic environment.

[0120] In an additional embodiment of the invention, the sloped tray is made from a non-toxic, petsafe material, such as food-grade polypropylene or silicone-coated polymers, preventing any chemical harm if contacted by pets. The surface is smooth and rounded at the edges to reduce the risk of injury.

[0121] In an additional embodiment of the invention, the sloped tray can be adjusted to a lower height using the height-adjusting or lifting mechanism, allowing small pets, such as cats or small dogs, to use the tray comfortably without strain.

[0122] In an additional embodiment of the invention, the anti-splash mesh is designed with rounded, non-abrasive apertures to prevent paws or claws from being caught, and may be coated with a pet-safe material such as silicone or food-grade polymer.

[0123] In an additional embodiment of the invention, the odor-removing mesh and surface coatings utilize pet-safe odor-neutralizing materials, such as activated carbon or zeolite, ensuring that pets are not exposed to toxic chemicals while maintaining hygiene.

[0124] In an additional embodiment of the invention, the flexible conduit is covered or encased in a pet-resistant sleeve, preventing chewing or interference by pets while still allowing smooth passage of liquid waste into the toilet trap.

[0125] In an additional embodiment of the invention, the tray includes dual adjustable heights, one for human use and a lower height for small pets, enabling a single system to be shared safely between humans and pets in the same household.

[0126] In an additional embodiment of the invention, the self-cleaning mechanism operates using minimal water or pet-safe cleaning agents, ensuring that residues do not harm pets who might come into contact with the system.In yet another embodiment of the invention, the system is user-friendly, requiring no electricity, sensors, or complex operation. It is durable, cost-effective, and designed to provide a hygienic, odor-free, and low-maintenance experience. By reducing water usage, the system also decreases the hydraulic load on municipal wastewater treatment systems, lowers energy and chemical requirements for treatment, and reduces nutrient load in sewers, contributing to overall environmental sustainability.

[0127] In yet another embodiment of the invention, the invention provides a unified system that combines a hydrophobic sloped tray, anti-splash mesh, flexible conduit, adjustable seat, odorcontrol features, self-cleaning mechanisms, and retrofit compatibility to achieve substantial water savings, hygiene, and ease of use. All embodiments described herein are encompassed within the scope of the present invention, and variations in materials, dimensions, coatings, and installation configurations may be implemented without departing from the inventive concept. In an embodiment of the invention, the one or more parts or components of the system of the present invention may be connected and fixed, or may be detachable and re-attachable, detachable component can be attached or fixed with one or more of other components using mechanisms such as but not limited to screw threads, twist and lock mechanism, magnetic locking, vacuum induced locking, friction fit, snap fit, or any combination thereof.

[0128] In an embodiment of the invention, the components of the present invention may be connected or arranged by using any suitable method and may include without limitation use of one or more of welding, adhesives, riveting, fastening devices such as but not limited to screw, nut, bolt, hook, clamp, clip, buckle, nail, pin, ring.

[0129] In an embodiment of the invention, the system of the present invention may be used for all age group such as but not limited infant, toddler, young, adult and elderly. Furthermore, this invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout the description of the figures. It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected or coupled” to another element, there are no interveningelements present. Furthermore, “connected” or “coupled” as used herein may include wirelessly connected or coupled. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0130] The aim of this specification is to describe the invention without limiting the invention to any one embodiment or specific collection of features. Person skilled in the relevant art may realize the variations from the specific embodiments that will nonetheless fall within the scope of the invention.

[0131] It may be appreciated that various other modifications and changes may be made to the embodiment described without departing from the spirit and scope of the invention.

[0132] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude or rule out the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. While this detailed description has disclosed certain specific embodiments of the present invention for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

[0133] In an exemplary embodiment of the invention, a conventional toilet with older flush mechanisms uses 5 liters per urination flush, whereas the passive system operates with 1-1.2 liters per flush. For a family of 4 with 5 uses per person daily, conventional toilets consume 100 liters per day, while the passive system consumes approximately 20-24 liters per day, resulting in a 76-80% water saving per day.

[0134] In an exemplary embodiment of the invention, considering urban apartments in India, a conventional dual-flush toilet with moderate water efficiency uses 2 liters per urination flush. Using the system described herein at 1 liter per flush, a 4-member family using 5 flushes each per day consumes 40 liters with conventional toilets and 20 liters with the invention, achieving a 50% reduction in daily water consumption, equivalent to 20 liters saved per day.TABLE 1: EXAMPLE 1-5

[0135] The following examples serve to illustrate the embodiments of the present invention. However, they do not intend to limit the scope of the invention.

[0136]

Claims

AMENDED CLAIMSreceived by the International Bureau on 07 September 2026 ( 07.09.2026)CLAIMS:

1. A passive liquid waste rerouting system for toilets, comprising:a) a sloped tray (101) detachably attachable to a toilet seat (901);b) a mesh (102); andc) a collecting mechanism;wherein the sloped tray comprises a surface inclined at an angle sufficient to facilitate gravity-driven diversion of liquid waste, and an outlet to allow the liquid waste to pass from the sloped tray into the collecting mechanism;wherein the mesh is detachably attached above the surface of the sloped tray; and wherein the collecting mechanism defines a diversion path fluidly isolated from a water-retaining volume of a toilet bowl and is configured to receive the liquid waste from the outlet and direct it into one of a waste pipe, a drainage system, a collection chamber or a diversion chamber without interfering with solid waste disposal.

2. The system of claim 1, wherein the sloped tray is made up of a material selected from the group consisting of Urea formaldehyde (UF), Polypropylene (PP), High-density polyethylene (HDPE), Polycarbonate (PC), Acrylonitrile butadiene styrene (ABS), Polystyrene (PS), Polyvinyl chloride (PVC), Polyethylene terephthalate (PET), Polytetrafluoroethylene (PTFE), Polyvinylidene fluoride (PVDF), Silicone-coated polymers, Fluoropolymer coated plastics, and any other rigid, water-resistant polymer.

3. The system of claim 1, wherein the collecting mechanism is made up of a material selected from the group consisting of Urea formaldehyde (UF), Polypropylene (PP), High-density polyethylene (HDPE), Polycarbonate (PC), Acrylonitrile butadiene styrene (ABS), Polystyrene (PS), Polyvinyl chloride (PVC), Polyethylene terephthalate (PET), Polytetrafluoroethylene (PTFE), Polyvinylidene fluoride (PVDF), Silicone-coated polymers, Fluoropolymer-coated plastics, and any other rigid, water-resistant polymer.

4. The system of claim 1, wherein the sloped tray has a height adjusting mechanism in such a way that the distance between the toilet seat and the surface of the sloped tray be changed or adjusted to a user requirement.

5. The system of claim 1, wherein the mesh is made up of a material selected from the group consisting of Stainless Steel (SS 304, SS 316), Aluminium, Brass, Copper, Nylon, Polypropylene (PP), High-density polyethylene (HDPE), Acrylonitrile butadiene styrene (ABS), Polycarbonate (PC), Polyvinyl chloride (PVC), Fluoropolymer-coated mesh, Silicone coated mesh, Woven metal mesh, Expanded metal mesh, Perforated polymer sheets, Etched metal mesh, or any other corrosion-resistant or chemically resistant material suitable for repeated contact with water and urine.

6. The system of claim 1, wherein the mesh has anti-splash function, and wherein the mesh has apertures configured to reduce droplet velocity and minimize splash-back during use.

7. The system of claim 1, wherein the angle of inclination of the surface of the sloped tray is adjustable to optimize fluid diversion and minimize splash.

8. The system of claim 1 , wherein the sloped tray and the collecting mechanism are configured to be retrofitted to a standard flush toilet using adhesive-based or clip-based mounting systems.

9. The system of claim 1, wherein the collecting mechanism further comprises a funnel and a flexible conduit.

10. A process for using the passive liquid waste rerouting system of claim 1, comprising steps of:i) attaching the system to the toilet seat;ii) passing the liquid waste upon the surface of the sloped tray through the mesh; iii) directing the liquid waste through the collecting mechanism into the one of the waste pipe, the drainage system, the collection chamber or the diversion chamber without interfering with solid waste disposal; andiv) rinsing the sloped tray and the collecting mechanism .

11. The system of claim 1, further comprising a lifting mechanism connected to the sloped tray and configured to adjust a position or an angle of the sloped tray, wherein the lifting mechanism comprises at least one of a manual lever system, a ratchet mechanism, arotational cam, gears, pulleys, a spring-loaded component, a counterweight mechanism and a telescopic mechanism.

12. The system of claim 1, wherein the collecting mechanism is further configured to retain a residual water column forming a seal against ingress of sewer gases while maintaining uninterrupted flow of the liquid waste.

13. The system of claim 1, wherein the sloped tray is detachably attachable to the toilet seat using a hinge mechanism (103) that enables adjustment of a position of the sloped tray relative to the collecting mechanism.

14. The system of claim 1, wherein the collecting mechanism further comprises a holder (201) configured to be fixed to an inner rim of the toilet bowl (902).

15. The system of claim 1, wherein the sloped tray is detachably attachable to a toilet.

16. The system of claim 1, wherein the system is integrated into a toilet as a standalone unit to form a complete sanitary system.

17. The system of claim 1, wherein the system is coupled with an existing urine-diverting dry toilet (UDDT).

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