Abstract: A lavatory pan washing apparatus includes a water supply unit supplying washing water into a rim so that a whirling flow is formed in a lavatory bowl, an air inlet pipe connected to a water discharge channel continuing to the downstream side of a water sealing portion of a pan, an air sucking unit sucking air through the pipe from the channel, and a control unit configured to activate the water supply unit at a time of washing of the pan so that the washing water is supplied into the water sealing portion. The control unit is configured to start activation of the air sucking unit after rise of a water level in the lavatory bowl, so that air is sucked through the pipe from the channel. The control unit is configured to deactivate the water supply unit after air has flowed through the air inlet pipe into the channel.

Abstract: A toilet monument is provided, in particular for a passenger transport vehicle, which includes, but is not limited to a receptacle that is configured to receive a mobile sanitary unit. The mobile sanitary unit includes, but is not limited to components for operating the sanitary unit. The mobile sanitary unit may be removed completely from the toilet monument in order to make it possible to affect decentralized cleaning and servicing of the mobile sanitary unit. The term mobile sanitary unit refers, for example, to a toilet unit, a hand wash facility, a urinal or a shower unit.

Abstract: A toilet that does not require water for use, which may be used in the home or which may be portable for use at locations outside the home, having a disposable, biodegradable bag for catching and storing human waste for disposal, and a method for disposing of said biodegradable bag.

Abstract: A portable toilet with mechanism that causes the toilet to flush as the door to the toilet enclosure is opened.

Abstract: Currently, the wastewater collection tank and the freshwater tanks comprise separate containers which are each mounted individually in the pressurized area of the cabin on the structure. In the present application a water-wastewater module is described which has two tanks for disposing of feces and wastewater and a water generation unit in the form of the fuel-cell module as integral components. The module and the fuselage may advantageously be manufactured separately from one another and first have to be combined during the final mounting of the aircraft.

Abstract: A toilet assembly for use in a vehicle includes a toilet, a macerator assembly for receiving material from the toilet, and a holding tank in association with the macerator assembly along a discharge tube. The material is configured to pass from the macerator assembly, through the discharge tube, and to the holding tank. A mounting structure is further included for attaching the discharge tube to a supporting surface. The mounting structure includes a floor flange attached to the supporting surface, an adapter plate assembly, and a seal positioned between the adapter plate assembly and floor flange. The adapter plate assembly is sealingly engaged with the discharge tube, such that the discharge tube is sealed with the supporting surface.

Abstract: A waste water tank of a portable multifunctional toilet is provided. The waste water tank is a container having a tank body, and is provided with a liquid level display structure and an exhaust valve.

Abstract: A fresh flush recycling toilet system, which may be portable, is provided having an enclosed housing and including a tank upon which a toilet seat and bowl is positioned. The tank has a vertically oriented solid wall extending across the bottom of the tank the full distance between the front and rear walls forming two sections in the tank. Waste material drops, under the influence of gravity, into the tank where it is accumulated for collection. The vertically oriented solid wall does not extend fully to the top of the tank. In its initial state, the second section of the tank is filled with fresh water. A pump draws water through a hose submersed in the second section of the tank. That water is flushed into the toilet bowl to rinse waste down through the toilet bowl into the first section of the tank.

Abstract: A non-water lavatory flushing device consists of a electrical four-way valve, which one of its exit is connected with the exit of the side wall of the valley at the back of the toilet pan for collecting the feces. The three exits are connected with the central part of the toilet pan, feces collecting box and the flushing liquid collecting box through a feces dispersing pipe, a feces collecting pipe and a urine collecting pipe. The non-water lavatory flushing device of the invention uses a four-way valve to replace the feces dispersing pipe magnetic valve, feces collecting pipe magnetic valve and urine collecting pipe of the prior art. The dispersed feces liquid and urine in the feces dispersing pipe, feces collecting pipe and urine collecting pipe is controlled by the four-way valve respectively. Then the structure is simplified and the cost is decreased. Furthermore, as the four-way joint is cancelled, the problem of wrong flowing of the leaving liquid is solved.

Abstract: A small shelter having an integral mount for detachably displaying an advertising panel having predetermined dimensions is provided. The small shelter includes a plurality of vertical wall panels joined together to define an interior portion of the small shelter. At least one of the plurality of vertical wall panels has an inner surface defining at least a portion of the interior space of the shelter and an outer surface defining at least a portion of the exterior surface of the shelter. The exterior surface of the shelter includes at least two integral, co-planar, advertising panel slots, which extend along opposing vertical margins of a portion of the shelter. Each of the advertising panel slots is adapted to retain a vertical edge of the advertising panel to detachably mount the first advertising panel to the exterior surface of the shelter.

Abstract: The present invention relates to a odor removal toilet stool, and more particularly, to a odor removal toilet stool using a preserving energy as a power source, capable of removing bad smell air and preventing its back flow in which the cleaning water (supplying water) stored in a water storage tank is supplied at two stages such as an initial standby water level and later full water level, wherein during supplying water to the full water level, air transference method using hydrodynamic operation occurred from a high speed injection with a injection nozzle is used without electric energy.

Abstract: A self-contained portable toilet for a patient's room includes a movable cabinet having a base and a plurality of wheels on the base and a brake for moving and securing the cabinet to a selected location. The cabinet also includes a water tank, a toilet bowl having an opening in the bottom portion thereof disposed in the cabinet at a pre-selected height. An excrement drawer is provided below the opening in the toilet bowl and a conduit provides water from the tank for cleaning a patient and/or the bowl. The cabinet also includes water level indicators for indicating the amount of water in the tank and in the excrement drawer. The drawer also includes an opening for receiving waste and a spring biased element for closing the opening when the drawer is removed from the cabinet.

Abstract: A portable toilet is provided comprising a bowl provided with an outlet and at least one spout. A flush tank is adapted to store a fluid, wherein the flush tank is adapted to be pressurized. A manually-actuated pump is in sealed communication with the flush tank, wherein the pump is adapted to cause the flush tank to become pressurized. A pressure relief valve adapted to release pressure from the flush tank. A manually-actuated flush valve is in sealed communication with the flush tank and is normally biased to a closed position. The flush valve includes a fluid outlet connected to the at least one spout and a fluid inlet. A flush valve actuator is disposed outside of the flush tank and is adapted to actuate the flush valve, wherein actuation of the flush valve actuator causes the flush valve to open to permit pressurized fluid contained within the flush tank to be delivered through the at least one spout.

Abstract: The invention relates to a toilet system (1) for installation in a vehicle, wherein the toilet system comprises the following components indicated: namely a base (2) which is to be fixed to the vehicle and has a top wall portion, also a toilet bowl (3) which is borne by the top wall portion of the base and has a top peripheral portion preferably bearing a toilet-seat ring (6), further a sewage-retention tank (15) which, in the use position, is arranged, at least in part, beneath the top wall portion, and additionally a guiding, retaining and coupling device which is configured such that the user—preferably from the outside of the vehicle—can pull the correspondingly formed sewage-retention tank out of its use position, in which it can be connected in a liquid-tight manner to the outflow of the toilet bowl (3), remove it from the vehicle and then replace it in said use position, wherein the toilet system (1) is configured such that, even after the base has been fixed to the vehicle, it is possible to make a se

Abstract: A restroom system can include a fixed-in-place restroom building, a flush toilet housed in the restroom building, a water supply system in communication with the flush toilet, and a sewage-holding vessel in communication with the flush toilet. Sewage can be received in the flush toilet and water can be supplied from the water supply system to the flush toilet in an amount less than 1 gallon of water per flush. Sewage effluent can be flushed from the flush toilet, transported to the holding vessel, and extracted from the sewage-holding vessel and to a sewage hauling vehicle tank. The sewage effluent can be transported away from the restroom system in the sewage hauling vehicle tank.

Abstract: A portable toilet comprises a holding tank and a toilet bowl unit supported above the holding tank. An uppermost wall of the holding tank locates an inlet opening therein which co-operates with a bottom discharge opening of the toilet bowl unit. A valve mechanism is operable across the inlet opening. The uppermost wall of the tank which locates the inlet opening therein is readily removable for greater access to the interior of the holding tank for disposable of the contents of the tank and for cleaning.

Abstract: A self-contained sanitary system for a vehicle includes a toilet with a flush tank for storing a source of flush water. The system further includes a spout in fluid communication with the flush tank. The spout has a first open end coupled to the flush tank and a second open end. The spout is coupled for rotation about a generally vertical axis between a stowed position and an access position. The second end is rotatable relative to the first end about a generally horizontal axis between a fill position and a drainage position. The system further includes a bench and a holding tank. The holding tank is removably associated with the toilet and includes a pair of wheels and a retractable handle.

Abstract: A Recreational Vehicle tank flush system is provided in which the existing vent pipe to the blackwater tank is modified by attaching an introduction tee which provides a hookup to a source of flushing water and to a hose and sprayer which may be hung just inside the top of the tank.

Abstract: A toilet is provided with a vacuum to assist in the flushing process. The vacuum is provided downstream between the toilet bowl and a waste outlet to draw the waste contents of the toilet bowl and out of the toilet bowl to the waste outlet under pressure. A controllable valve connected to a vacuum source is connected in a discharge passage between the toilet bowl and the waste outlet. The valve is opened to apply vacuum to the discharge passage upon activation of a toilet flush actuator and closes prior to the waste contents of the toilet bowl reaching the location of the valve. A normally closed flap valve is connected between the discharge passage and the waste outlet to define a minimal amount of air in the discharge passage which is removed by the vacuum.

Abstract: A floor level pumping system, that is non-disruptive to the existing flooring, including a conventional rear outlet toilet, a floor level tank for receiving waste and fluid from the outlet of the toilet including a tank chamber containing a designated area with a sensing system which activates a discharge pump when the level or quantity of the waste and fluid within the tank chamber reaches a predetermined level, wherein the chamber further includes one or more baffles extending upward from a floor of the tank chamber, which baffles at least partially segregate the designated area from the remaining area of the tank chamber, wherein at least one of said baffles contains a curved surface, and a discharge pump for pumping waste from the floor level tank out through a discharge pipe, wherein the discharge pump is secured to the floor level tank.

Abstract: A fluid storage system and vehicle for transporting such fluid storage system are provided. An exemplary fluid storage system includes a fluid storage tank configured for mounting at the rear of the vehicle, the fluid storage tank having a base, at least one enclosing side wall and a tank top that is adapted to form a loading tray of the vehicle. The fluid storage tank may include spaced apart baffles, one or more side windows for observing tank contents and/or a plurality of sealed compartments. Vents may be provided in communication with vent outlets disposed on a loading tray headboard associated with the system/vehicle. Transport vehicles may be provided that include a tray back for supporting goods, the tray back being adapted to form a fluid storage tank. The fluid storage tank formed by the tray back may include structural features of the disclosed fluid storage system, e.g.

Abstract: A portable lavatory, which is easily loaded into a freight box of a truck and is maintained in a stable loaded state in the freight box during transportation, is disclosed. In the portable lavatory (10), the capacities of both a fresh water tank (20) and a foul water tank (30) of a tank unit (12) are altered in inverse proportion to each other. The tank unit (12), integrated with a lower end of a lavatory facility unit (11), has a width and length shorter than those of the lavatory facility unit, thus being stepped inward from the lower end of the lavatory facility unit. The fresh water tank (20) and the foul water tank (30) are assembled with each other at flanged open ends thereof into a single structure, with a variable tank (40) provided in a junction part between the two tanks.

Abstract: A waste holding tank for a mobile sanitary toilet system includes a base section, a bowl section supported by the base section and a waste holding tank. The tank includes a housing defining a tank interior and a tank exterior. A vent opening is located at a first location of the housing. The opening forms a fluid communication between the interior and the exterior of the tank. A vent conduit connects the vent opening on the tank exterior at the first location with the exterior of the tank at a second location of the housing. The vent conduit leads at least partly through the interior of the tank without being in fluid communication with the interior of the tank.

Abstract: A method and device are provided for treating a waste water waste-product mixture from a toilet by coupling the toilet to a waste product mixture to a waste product holding tank, connecting the tank with a vacuum container having a stirring member for breaking up the waste product and a heating system for drying the waste product to an ash, introducing water from a water holding tank that communicates with the toilet to the ash to form a gel, separating the water from the gel, returning the water to the water holding tank, and discharging the gel residue.

Abstract: A waterless vacuum toilet system for an aircraft includes a toilet bowl connected via a suction valve and a waste collection pipe to a waste collection tank. Waste-contacting surfaces that come into contact with urine and fecal waste are coated with an adhesion-inhibiting or adhesion-reducing nanocoating. The adhesion of waste is significantly reduced, and the need for flushing water is completely eliminated. Instead, an air jet arrangement preferably including an annular ring nozzle or annular air gap directs an airflow into the toilet bowl and along the nanocoated waste-contacting surface thereof, to “air flush” the waste material from these surfaces. The flushing airflow may be induced through the air jet arrangement into the toilet bowl by the suction applied through the suction valve. The “air flushed” toilet system substantially reduces the total system weight and eliminates the need for toilet flushing water to be carried in the aircraft.

Abstract: A sanitary system including a toilet adapted for use in a recreational vehicle, and a recreational vehicle including the toilet and sanitary system.

Abstract: A mobile, portable washing bowl or bidet, sink bowl and shower primarily for use indoors. The system uses running water and there is no need for electronic pumps. The entire device is easily transported and meets the personal hygiene needs of people with limited mobility. The washing bowl and sink bowl are mounted to a vertical support riser and washing bowl support plate. The entire frame is mounted to a pneumatic height adjuster assembly, which in turn is mounted to a five-legged caster base. Each leg of the wheelbase terminates with locking casters. There is a water tank which allows water to flow, via gravity, through three sets of flexible hoses to the sink, then the washing bowl and finally through the draining hose. Each hose has a shut off valve so that water can either be contained or released in each of the holding places —the water tank, the sink bowl or the washing bowl.

Abstract: A waste holding tank for a mobile sanitary toilet system includes a base section, a bowl section supported by the base section and a waste holding tank. The tank includes a housing defining a tank interior and a tank exterior. A vent opening is located at a first location of the housing. The opening forms a fluid communication between the interior and the exterior of the tank. A vent conduit connects the vent opening on the tank exterior at the first location with the exterior of the tank at a second location of the housing. The vent conduit leads at least partly through the interior of the tank without being in fluid communication with the interior of the tank.

Abstract: A vent stack screen for portable toilet holding tanks is provided in the form of a cap designed to fit over the open end of an open air vent stack extending from the holding tank through the roof of a portable toilet. The cap is constructed from a tubular sleeve of plastic material having an inner diameter substantially equal to the outer diameter of the vent stack of a holding tank. The cap includes an inwardly extending annular lip formed at one end. A circular mesh of plastic screen material is secured within the tubular sleeve between the annular lip and a plastic locking ring received within the tubular sleeve.

Abstract: A payload transporter, including a truck frame, a body having at least one waste storage tank storage tank, and a vacuum system, wherein the vacuum system is used to remove waste material from a portable toilet, wherein the waste material is stored in the waste storage tank, and wherein the payload transporter transports both the waste and the portable toilet to a preferred location. Special baffles are placed within the compartments to prevent liquid surge during transport and to provide structural support for both the top of the bed when transporting toilets and while the bed is under vacuum. Optionally, fresh water tanks can be included in the payload transporter and used to clean and replenish the portable toilets.

Abstract: A portable washroom for providing both washing and toilet facilities. The washroom is an enclosure that includes a base, upright supports mounted to the base, wall panels mounted between the upright supports, and a roof mounted to the top of the wall panels. An upward flushing toilet is mounted within the enclosure. The toilet has a waste line extending through one of the wall panels, and out of the enclosure so that waste from the flush toilet and wash basin is flushed outside of the enclosure. A wash basin is mounted within the enclosure and includes a drain line that connects to the toilet bowl waste line. A fresh water supply line extends through one of the wall panels of the enclosure and is fluidically connected to the toilet and to the wash basin for supplying fresh water thereto.

Abstract: A vacuum tank assembly includes a vacuum tank that has a low profile and will fit in small, and particularly low height, compartments of a boat or RV. The tank is connected to a vacuum toilet and a vacuum pump during use. The tank preferably has a generally rectangular prism configuration, and has a front surface in which openings for receipt of a dip tube assembly, sewage inlet (from the toilet), and vacuum switch are provided. The dip tube assembly includes an adaptor operatively connected to the vacuum pump and an evacuator component which has a generally tubular configuration and a substantially flat open bottom closely overlying the bottom interior of the tank. A locator tab cooperates with a cut out in the tank front surface to properly position the evacuator open bottom adjacent the tank bottom.

Abstract: A filter arrangement for a vacuum toilet system includes a filter element arranged in a filter housing connected to a waste water tank of the vacuum toilet system. The filter element includes a polytetrafluoroethylene (PTFE) filter membrane on the inlet side thereof, a filter support material supporting the PTFE membrane, and a support cage, to form a filter cartridge. The filter is preferably a pleated cylindrical filter with the inlet side on the inside of the cylinder. The arrangement preferably further includes a rinsing nozzle that rinses contaminants from the inlet side surface of the filter element, to flow down into the waste water tank. This rinsing, together with the low adhesion and the surface filtration principle of the PTFE filter membrane, prevent clogging of the filter.

Abstract: A waterless vacuum toilet system for an aircraft includes a toilet bowl connected via a suction valve and a waste collection pipe to a waste collection tank. Waste-contacting surfaces that come into contact with urine and fecal waste are coated with an adhesion-inhibiting or adhesion-reducing nanocoating. The adhesion of waste is significantly reduced, and the need for flushing water is completely eliminated. Instead, an air jet arrangement preferably including an annular ring nozzle or annular air gap directs an airflow into the toilet bowl and along the nanocoated waste-contacting surface thereof, to “air flush” the waste material from these surfaces. The flushing airflow may be induced through the air jet arrangement into the toilet bowl by the suction applied through the suction valve. The “air flushed” toilet system substantially reduces the total system weight and eliminates the need for toilet flushing water to be carried in the aircraft.

Abstract: A vacuum tank assembly includes a vacuum tank that has a low profile and will fit in small, and particularly low height, compartments of a boat or RV. The tank is connected to a vacuum toilet and a vacuum pump during use. The tank preferably has a generally rectangular prism configuration, and has a front surface in which openings for receipt of a dip tube assembly, sewage inlet (from the toilet), and vacuum switch are provided. The dip tube assembly includes an adaptor operatively connected to the vacuum pump and an evacuator component which has a generally tubular configuration and a substantially flat open bottom closely overlying the bottom interior of the tank. A locator tab cooperates with a cut out in the tank front surface to properly position the evacuator open bottom adjacent the tank bottom.

Abstract: The present invention is a portable sanitation device comprising a stall that houses and maintains a conventional toilet. Coupled to the toilet is a water source and coupled to the stall is a removable and separate septic tank. The water source will render a flushable unit that permits the waste to travel from the toilet to a separate and removable septic tank. Other features can be added for enhancing the present invention, such as, but not limited to: a sink coupled to the water source; a light source interiorly and/or exteriorly located; a urinal coupled to the water source; a tissue dispensing apparatus; a soap dispenser; a vent; shower head coupled to the water source; a capacity gauge coupled to the septic tank; and a by-pass valve located within the waste line of the toilet to the septic tank for enabling capability of by-passing the septic tank and tapping into an existing sewage line.

Abstract: A low profile transportable holding tank for accepting waste from portable toilets. The holding tank is carried on a flatbed vehicle and has a flat deck for cargo, thus effectively increasing the cargo-carrying capacity of the vehicle compared with that available if the vehicle were carrying a conventional holding tank. Internal reinforcement enables the holding tank to withstand a partial vacuum imposed for pumping waste into the tank.

Abstract: A waste holding tank for a mobile sanitary toilet system includes a base section, a bowl section supported by the base section and a waste holding tank. The tank includes a housing defining a tank interior and a tank exterior. A vent opening is located at a first location of the housing. The opening forms a fluid communication between the interior and the exterior of the tank. A vent conduit connects the vent opening on the tank exterior at the first location with the exterior of the tank at a second location of the housing. The vent conduit leads at least partly through the interior of the tank without being in fluid communication with the interior of the tank.

Abstract: A waste management system for a vehicle includes toilet, an accumulator tank and a main waste tank. The accumulator tank is in fluid communication with and fixedly mounted relative to the toilet. The main waste tank is remotely positioned relative to the toilet. A flexible fluid coupling connects the accumulator tank and the main waste tank such that the toilet and the accumulator tank can be translated relative to the main waste tank. In certain applications, the toilet is mounted in a movable cabin portion of the vehicle that is coupled to a fixed cabin portion of the vehicle for movement between an extended position and a retracted position.

Abstract: A water treatment and recycling system is provided having an aeration chamber, a reaction chamber, a water tank, and a plurality of pumps. The water tank houses the treated water and is the supply source for supplying water to different water needs. The first pump receives waste water from a waste source, such as a toilet, and pumps it into the aeration chamber. The aeration chamber initially treats the water and passes the contents therein via a second pump to the reaction chamber. The water is secondarily treated by the reaction chamber and thereafter pumped into the water tank. The first pump also receives a continual supply of treated water from the water tank. The aeration chamber and reaction chamber contains therein a plurality of specially treated wood chips, and a bio-colony consisting of different microbes and bacteria introduced into the wood chips.

Abstract: Draining of the waste tank of a recreational vehicle is improved by using a motor to operate the waste hose. The motor causes the proximal end of the hose to be extended from its housing in the RV while the distal end remains attached to the waste tan. The extended proximal end can then be inserted into the access pipe of a sewer system for draining the waste tank. The motor will retract the hose when the waste tank has been emptied. The motor is operable either by throwing a switch on the motor or pressing a button on a remote control unit.

Abstract: A vacuum unit, particularly for a vacuum toilet system, includes first and second valves (4, 6), an ejector (10) connected to the first valve, and a piston valve (16) which is connected between the ejector and the second valve. The unit is characterised in that an overpressure and a vacuum can both be generated from the first valve (4) by controlling the state of the piston valve by the combination of the states of the first and the second valves. A vacuum toilet system is also described.

Abstract: A multi-function base unit for an outdoor portable restroom cabana that is molded from a plastic material to form a combined cabana floor, waste-holding tank, and pallet skids for support and for forklift access. The unit includes a base that defines a holding tank and a pallet that supports the cabana. The base includes a top floor panel enclosing the base holding tank. The panel may be removed for storing restroom components therein when the toilet cabana is in a knock-down state, and for storing waste when the cabana is assembled and used, and for stabilizing the cabana as the holding tank is filled. The base unit is designed with a floor on which either an Asian style or Western style toilet unit may be mounted with or without flushing capability.

Abstract: The present invention relates to oil toilets where oil is used as a sealant to isolate unpleasant smell produced by waste materials. Waste materials enter oil in the storage container and sink since both solid waste and urine have specific gravity that is higher than that of oil. Excess oil is collected in the overflow container. It has a component for collection of fumes that are formed by the waste materials collected in the toilet. A cleaning means is utilized to remove waste materials from the toilet while at the same time it could be modified to reuse a substantial amount of the oil present in the toilet.

Abstract: A vacuum waste system is disclosed having a receptacle for receiving waste, the receptacle having an outlet, and a collection tank in fluid communication with the receptacle outlet. A vacuum source is in fluid communication with the collection tank to produce a partial vacuum in the collection tank. A flush actuator is provided that is operable to generate a flush command, and a flush valve is disposed between the toilet outlet and the collection tank having a normally closed position, the flush valve actuating to an open position for a flush interval in response to the flush command, thereby to control fluid communication between the collection tank and toilet outlet. A vacuum control valve is disposed between the vacuum source and the collection tank, the vacuum control valve being operable between open and closed positions thereby to control fluid communication between the collection tank and vacuum source.

Abstract: A toilet system, especially for passenger transport vehicles, includes a toilet bowl connected via a suction valve and a waste collection pipe to a waste collection tank. Waste-contacting surfaces of the toilet system that come into contact with urine and fecal waste are coated with an adhesion-inhibiting or adhesion-reducing nanocoating. Thereby, the adhesion of waste to the toilet bowl and other components is significantly reduced, and the total flushing water demand can be substantially reduced or, preferably completely eliminated. An airflow flowing into the toilet bowl, induced by the vacuum suction through the suction valve, is sufficient to “flush” the waste material from the nanocoated waste-contacting surfaces. The toilet system provides a substantial reduction in the total system weight and in the required quantity of flushing water that must be carried in the vehicle, and thus makes the toilet system particularly applicable for passenger transport vehicles such as aircraft.

Abstract: A self-contained bathroom waste collection and disposal unit, having an access cover free of electrical and plumbing fixtures is disclosed. The unit includes a reservoir having an inlet and a sump opening. The sump opening is sized to receive a pump and a float mechanism therethrough. The sump opening is closed by a primary cover having venting, plumbing and electrical ports and an access cover. The access cover can be removed to access the enclosed sump, without interrupting the venting, plumbing or electrical connections.

Abstract: A multi-position (e.g. three way) valve is operatively connected to a combined vacuum/holding tank for a vacuum toilet system, and to a pump capable of pumping both air and sewage. When the valve is in one position air is pulled from the tank through the pump to increase the vacuum level in the tank, e.g. to above 10 in/Hg. When the valve is moved to a second position by either a float or manual switch operation, the sewage is pumped out of the tank through the pump while surrounding air moves through the valve into the tank.

Abstract: A waste disposal system quietly and effectively evacuates solid, liquid, and slurry food waste from a galley sink via a vacuum action created when a normally closed flush valve momentarily opens and eliminates the differential pressure between the sink and the drain line. The system is automatically disabled when a clogged condition is sensed. The sink bowl is equipped with a sealable cover that cuts down the noise associated with vacuum pressure evacuation systems to an acceptable level. The system also has a rinse subsystem including a rinse valve for introducing rinse water into the sink just before a flush operation commences. The sink bowl includes an air inlet port in communication with an air inlet duct that extends outside of and above the cart for providing cabin pressure air to the sink. A controller controls the timing and operation of the flush and rinse operations.

Abstract: A multi-position (e.g. three way) valve is operatively connected to a combined vacuum/holding tank for a vacuum toilet system, and to a pump capable of pumping both air and sewage. When the valve is in one position air is pulled from the tank through the pump to increase the vacuum level in the tank, e.g. to above 10 in/Hg. When the valve is moved to a second position by either a float or manual switch operation, the sewage is pumped out of the tank through the pump while surrounding air moves through the valve into the tank.