Abstract: A vacuum toilet system for a vehicle (such as a boat) has numerous advantages. A single pump with valves on opposite sides of it may be used as both the vacuum source and for discharging sewage from a holding tank. Two sets of multiple heads may be selectively connected to two pumps for emergency purposes. The vacuum toilet includes a sealing element with an integral movable valve engaging element including polytetrylflouroethylene and synthetic rubber, and at the same durometer (55-65). The initial passageway provided by movement of the valve with respect to the seal is disposed directly above the center line of an orifice. An an anti-siphon valve assembly has a simple construction of a housing with parallel legs and anti-siphon air passage in alignment with one of the legs. A spray nozzle extends from the other legs of the anti-siphon valve assembly. The toilet funnel/orifice is universally connected to conduits.

Abstract: A chock for holding open a valve member of a flush valve assembly of a portable toilet having an outlet for communicating the toilet with a storage tank, the valve member being associated with the outlet and movable between a closed position wherein the valve member blocks the outlet and an open position wherein the outlet is unblocked, and wherein the valve member is biased toward the closed position, the chock including a body member adapted for placement within the outlet so as to hold the valve member in the open position and allow communication between the outlet and the storage tank, and a handle attached to the body member for placing the body member in the outlet and for removing the body member from the outlet.

Abstract: A vertically movable bathroom can be moved between a plurality of vertically spaced user stations, such as the floors in a high rise building. In one embodiment a freight elevator in a high rise building is modified to include complete bathroom facilities that are accessible to disabled persons, such that the facilities can be provided to any floor of the building. The modified elevator also includes first aid supplies, oxygen, a stretcher, etc., to make such supplies available throughout the building. Fire safety facilities, including a self contained sprinkler system and an express control to cause the elevator to travel to an exit floor without opening on any intermediate floors, provide a safe means of egress from the building in the event of a fire or other emergency.

Abstract: A compact, self-contained, portable vacuum toilet system having a sump for collecting waste liquids by means of gravity, a differential pressure-operated discharge valve for regulating withdrawal of waste liquids from the holding sump for transport to a vacuum collection tank during a transport cycle, differential pressure-operated sensor and controller valves for regulating operation of the discharge valve in response to a hydrostatic pressure condition inside the holding sump, and a push button-operated water valve for adding water to the toilet bowl during and immediately after a flush cycle. A sink and its own push button-operated water valve may also be provided.

Abstract: An integral, vacuum operated, package system for collecting and transporting waste liquids from, e.g., a defrosted freezer, sink, bathtub, or water fountain, to a vacuum transport conduit connected to a vacuum collection station. The package system preferably includes a collection sump, sensor valve, controller valve, vacuum volume, and vacuum valve, which operatively communicate with each other by means of applied differential pressure to withdraw waste liquid from the collection sump and pass it through an opened vacuum valve during a transport cycle. The package system is compact, portable, and easily installed and maintained, and may be concealed in most applications, since it requires a mere volume generally measuring 12".times.8".times.31/2.

Abstract: A temporary sealing device for sealing a waste discharge conduit from an RV to an inlet receptacle of a waste receiving reservoir. The sealing device includes an inflatable bladder which is mounted so as to be positionable between the discharge conduit and the receptacle. A pump inflates the bladder to a size which seals the opening between the receptacle and the conduit to inhibit removal of the conduit and prevent the discharge of waste therearound. The sealing device is also provided with a valve which allows the bladder to be deflated after the transfer of waste and permits the conduit to be withdrawn from the receptacle.

Abstract: A vacuum toilet system comprises a small number of toilet bowls, a sewer, a small number of normally closed sewer valves connecting the toilet bowls respectively to the sewer, a sewage collecting tank in open communication with the sewer, a vacuum generator having a suction side in open communication with the sewer and operative to generate a partial vacuum in the tank and sewer, and a flush initiator associated with each toilet bowl for generating a toilet flushing impulse. A control unit is responsive to a toilet flushing impulse generated by the flush initiator associated with a given toilet bowl to cause the sewer valve connecting that toilet bowl to the sewer to open and the vacuum generator to operate for a predetermined time. In this fashion, a partial vacuum is generated in the tank and sewer of a level that depends on the free vacuum volume of the system.

Abstract: An improved rinse nozzle apparatus is described which is mounted on an aircraft waste tank and functions to efficiently rinse the interior of the waste tank when the tank is emptied and cleaned. The rinse nozzle includes a plastic body mounted on the tank. A stainless steel hose connect nipple is molded into the body at a first end of a liquid passageway which is provided therethrough. A plurality of brass rinse jets are also molded into the body. The rinse jets disperse and direct the cleaning solution against the inside of the waste tank. By fabricating the rinse nozzle mostly from light-weight plastic and molding the metal hose connection nipple and rinse jets into the plastic body, a lighter weight, leak free, and less expensive rinse nozzle is provided.

Abstract: The invention relates to a sewage system comprising a sewage producing unit, a vacuum creating apparatus, an intermediate tank, a receiver and pipe connection means interconnecting said parts. The sewage is arranged to be carried away from the sewage producing unit into the intermediate tank by means of vacuum. To minimize smell problems, exhaust air from the vacuum creating apparatus is arranged to be passed into a pressure accumulator. The compressed air stored in the pressure accumulator is arranged to be passed into the intermediate tank so that it passes the sewage contained in the intermediaate tank into the sewage receiver.

Abstract: An aircraft toilet system includes a holding tank and a discharge pipe which extends to a service panel located near the skin of the aircraft. A poppet valve is located near the outlet end of the discharge pipe. Leakage of fluids past the poppet valve is corrected in a first embodiment by pressurized cabin air which is ported to a downstream side of the poppet valve and by venting the upstream side of the valve to the atmosphere. In a second embodiment, high pressure air from the aircraft's environment control system is ported to the downstream side of the valve. The resulting pressure differential holds the valve against its seat, and prevents fluid leakage in the event of a damaged valve seal.

Abstract: A vacuum-type sewage collecting apparatus collect sewage discharged from a plurality of houses or facilities in an accumulating tank through a vacuum sewage pipe network, the inner pressure of which is negative. The vacuum sewage pipe network includes a plurality of upper stream pipes and lower stream pipes fastened to each other in a branch-like fashion. Each lower stream pipe has a sawtooth-like shape formed by alternately disposed downwardly-sloping portions extending gently downwards toward said accumulating tank, and lift portions fastened to the lowermost portion of a respective downwardly-sloping portion and extending upwardly with a steep slope. The upper stream pipe is connected to the lower stream pipe in a range in which a horizontal plane, which extends through an upper end portion of the lower stream pipe at the position in which the downwardly-sloping portion adjoins the lift portion, is higher than the center of the lower stream pipe.

Abstract: A vacuum-type sewage collecting apparatus is arranged in such a manner that sewage discharged from the houses or facilities is once accumulated in a cesspool, and the sewage accumulated in the cesspool is then collected through a vacuum valve and a vacuum sewage pipe, the interior of which is under a negative pressure. The vacuum valve is operated by negative pressure taken from a vacuum source and supplied to the vacuum valve via a connecting pipe. The negative pressure for operating the vacuum valve is taken from a portion of a vacuum sewage pipe which is elevated at a level higher than that of the vacuum valve and is disposed downstream of the vacuum valve. Alternatively, the negative pressure may be directly taken from an accumulating tank, the inner pressure of which has been evacuated by a vacuum pump, from a pipe which establishes a connection between the accumulating tank and the vacuum pump, or from a tank connected to the pipe connecting the accumulating tank and the vacuum pump.

Abstract: A self-contained sanitary fixture, particularly for a recreational vehicle, comprises a bench supported on a base cooperatively defining a stowage compartment. The bench contains a bowl having an outlet which connects to a tank in the storage compartment. A valve on the tank controls passage between the bowl and the tank. The valve is itself operated from a knob on the bench through a coupling mechanism. Waste water from the bowl is collected in the tank and is disposed of by sliding the tank out of the stowage compartment through an opening in the RV's sidewall and carrying the tank to a suitable disposal site. The tank incorporates a rotatable pourspout and vent valve to facilitate pouring waste contents out of the tank. The connections between the bowl outlet and the tank and between the knob and valve automatically disconnect upon removal of the tank from the stowage compartment. Similarly they automatically reconnect when the tank is inserted back into the stowage compartment.

Abstract: A recirculating toilet water system includes: a toilet, a main water tank for storing water and receiving waste matters from the toilet, a filtered water supply means for supplying filtered water as filtered through a screen from the main water tank for flushing the toilet and an air supply means for delivering compressed air for boosting the filtered water for flushing the toilet, wherein the water supply means includes a feed water valve which is normally opened to fludically communicate a flushing water tank with the main water tank to lead water into the flushing water tank and is operatively closed when boosting the water for flushing the toilet by the compressed air, and is further provided with a purging perforation therethrough to eject a partial stream for purging the screen for preventing the clogging of particulate matters on the screen when boosting the water.

Abstract: A bathroom waste collection and disposal unit for mounting on a floor of an enclosure includes a tank of unitary construction having a horizontal portion defining a refuse reservoir and a vertical portion open to the horizontal portion for refuse gases and to accommodate a pump. A toilet is mounted on the top surface of the horizontal portion in fluid communication with the reservoir of the horizontal portion of the tank. The horizontal portion includes a plurality of columns within the reservoir extending between the floor and top wall of the horizontal portion. The tank also includes a baffle housing for enclosing the float of the refuse pump to meter the rate of flow of water flowing away from the pump float as the pump is actuated to discharge refuse from the reservoir.

Abstract: A water saving toilet construction includes a toilet unit which is adapted for flushing with less than approximately one gallon of water, a holding tank which is located beneath the toilet unit and a macerator discharge pump assembly which is operative for macerating waste effluent from the holding tank and discharging it into a sewer line. The holding tank has a volume of at least approximately two and one half gallons so that a sufficient volume of waste effluent can be discharged from the toilet at one time to minimize the potential for clogging the sewer line.

Abstract: A universal recreational vehicle toilet system with a removable waste holding tank is provided to enable the recreational vehicle manufacturer to have wide latitude in the positioning of the toilet within a recreational vehicle. The toilet system includes an upper section containing the toilet bowl and a lower section forming a base upon which the bowl section is supported in spaced relation above the recreational vehicle floor. A holding tank is partially or fully inserted in the base section and coupled to the toilet bowl for receiving waste therefrom. The holding tank is removable through an opening in the sidewall of the recreational vehicle for disposal of waste.

Abstract: A systen for extending and retracting the waste hose for a waste disposal system that is typically found on recreational vehicles and includes power or crank-driven hose extender means for extending the collapsible hose from its collapsed mode stored on-board the recreational vehicle, to its extended configuration which it is used for dumping waste from an RV holding tank into an inlet of an RV waste dump station. The system includes a specialized hose extension and retraction mechanism, and a universal coupling at the end of the hose which will fit waste station inlet pipes of all the commonly used sizes, which run from 3" to 41/2" in diameter. In addition, a special structure is used to create a 90 degree bend in the outboard end of the hose, and an optional unidirectional cuff around the hose will hold tension on the hose so it can be stretched between the recreational vehicle and the inlet, but will permit the hose to be manually pushed back through the cuff without substantial resistance.

Abstract: A portable toilet having a battery operated flushing assembly that is powered by batteries carried in the toilet. The batteries provide for a "pulsed" flushing action of the flush water and this is achieved by the use of an axial flow pump which is operable to lift small amounts of water small distances to the bowl in a repeatable fashion. This facilitates flushing of the toilet, makes it easier for the user to flush the toilet, and provides for efficient and complete flushing. A selectively operable closure plate prevents leakage of water from the toilet bowl during transport of the toilet.

Abstract: This invention relates to a toilet system of the type with direct evacuation and rinsing without flushing effect nor siphon, constituted by a bowl of generally truncated form comprising at the level of its small base, in lower position, a trap controlled by a pneumatic jack, for intermittent communication with an evacuation conduit, and the bowl comprises at least one nozzle for projecting rinsing and evacuation water coming from a pressurizing chamber, characterized in that said system is connected to a source of energy constituted by a source of compressed air communicating on the one hand with the pressurizing chamber to ensure high pressure supply of the rinsing and evacuation nozzles and, on the other hand, with the pneumatic jack for maneuvering the trap, such communication being ensured by a pneumatic slide valve adapted to regulate and control the evacuation cycle comprising the synchronized phases, firstly, of opening of the trap and of projection of pressurized water and, secondly of closure of the

Abstract: This invention relates to a sewage waste disposal system for receiving liquid and solid waste, preferably human waste. The waste is heat treated to produce a form of dehydrated solid waste. The solid waste is a waste by-product of the system and may be used as a fertilizer. The system encompasses the use of a trapless toilet bowl which includes a toilet seat and lid and has the appearance of a conventional toilet arrangement for greater public acceptance.

Abstract: A portable toilet having a fill cap covering the fill opening for a flush water tank. The cap includes a lid with an air vent opening and a seal member captivated in a cage extending downwardly from the lid into the tank, the cap being removably mounted on a tube for filling the tank with water. An air path from the atmosphere to tank is defined by the lid vent opening and an annulus around the seal. The cage is inserted into the tube and should the water splash in the tube the seal is forced upwardly and against the vent opening to prevent water from escaping.

Abstract: The body of a recreational vehicle (RV) is configured to have a stowage compartment within the body's interior but separate from the interior occupant space. The stowage compartment contains a tank which serves water use fixtures in the interior occupant space. The stowage compartment is disposed adjacent the sidewall of the RV body and an opening is provided through the sidewall from the stowage space to the exterior. This opening is closed by a door. When the door is open, the tank can pass through the opening into and out of the stowage space. The tank can be either a fresh water tank containing a supply of fresh water for use at sanitary fixtures in the RV or alternatively it can be a waste water tank of either the gray water or black water type which collects waste from the water use fixtures.

Abstract: A non recirculating, low volume toilet system for aircraft includes a interim storage tank connected to the toilet bowl. A waste drain leads to a gate valve which opens to a vacuum assisted luid gas separator. The separator is connected to the main waste tank. In a first embodiment, the main waste tank is a non pressurizable vessel and is maintained within a pressurized portion of the aircraft. The separator is alternatively connected to the exterior environment and the pressurized interior. When the toilet is utilized, the flushing operation uses a very small amount of flushing fluid to clean the bowl and transfer the contents to the interim tank. Opening the gate valve subjects the bowl and the interim tank to a pressure differential which transfers the flushing liquid and waste matter to the separator. The gate valve is closed and the separator is permitted to reach pressure equilibrium with the main waste tank at which time the contents of the separator are transferred to the main waste tank.

Abstract: A lavatory system suitable for use on a commercial passenger aircraft includes a toilet bowl for receiving waste and a waste-holding tank in fluid communication with the toilet bowl for receiving waste from the toilet bowl. A flapper valve is provided in the bottom of the toilet bowl and operates to control the passage of the toilet bowl contents into the waste-holding tank. Water, which may be from the potable water supply system, is directed into the toilet bowl to wash the sides of the toilet bowl and to assist in moving waste material to the waste-holding tank. A water inlet valve controls the introduction of water into the toilet bowl by actuation of a flushing switch. The water is introduced into the toilet bowl through a single nozzle which moves and progressively directs the flow of the water onto the entire interior of the toilet bowl in such a manner that a minimal amount of water is utilized per flush.

Abstract: A pump comprising a flexible member defining at least part of a variable volume pumping chamber, an inlet valve to permit of liquid to enter the chamber thereby and an outlet valve to permit of liquid to leave the chamber thereby, and an operating member to deform the flexible member to vary the volume of the pumping chamber to pump liquid into and out of the chamber.

Abstract: A portable toilet having a battery operated flushing assembly that is powered by batteries carried in the toilet. The batteries provide for a "pulsed" flushing action of the flush water and this is achieved by the use of an axial flow pump which is operable to lift small amounts of water small distances to the bowl in a repeatable fashion. This facilitates flushing of the toilet, makes it easier for the user to flush the toilet, and provides for efficient and complete flushing. A selectively operable closure plate prevents leakage of water from the toilet bowl during transport of the toilet.

Abstract: The waste material holding tank located within a portable, outdoor toilet cabana is vented to atmosphere by a vent pipe extending upwardly from the tank to the roof of the toilet cabana. A small, electrical blower fan is mounted upon the upper, open end of the vent pipe for sucking air from the holding tank and blowing the air to outside atmosphere. A solar energy panel is mounted upon the roof of the cabana near the fan and is electrically connected to the fan. The panel generates electrical energy in response to a predetermined level of sunlight for electrically energizing the fan. Thus, the fan circulates air through the holding tank during the items that the sun is shining upon the cabana, to reduce the solar heat build-up in the holding tank for reducing the generation of noxious odors caused by heat induced reactions in the waste material in the tank.

Abstract: An improved seal element for use with a self contained recreational vehicle sanitary system. This invention is particularly adapted for use with the type of sanitary system having a bench structure which defines an interior storage compartment and a waste holding tank removably disposed in the storage compartment. Waste products are transferred from the bench structure to the waste holding tank via a fill opening. A seal element is disposed around the perimeter of the fill opening which seals against both the bench structure and a movable blade valve mounted within the holding tank which closes off the fill opening when it is desired to remove the holding tank for dumping etc. The seal element includes one or more sealing lips which engage the valve blade member in its closed position. One of the seal lips is disposed in a generally radially outwardly projecting direction with respect to the fill opening when the valve is closed.

Abstract: A waste tank cleaning system in a preferred embodiment includes a flowmeter interposed in the line carrying cleaning fluid to the tank. A pair of solenoid valves are controlled by an electronic counter coupled to the flowmeter. In response to predetermined volumetric flows of fluid, the solenoid valves alternatively deliver fluid to a hydraulically operated drain valve and to a spray/rinse outlet in the waste tank. In one alternative embodiment, a flowmeter is mechanically coupled to a valve structure which alternatively applies fluid to the drain valve and to a spray/rinse outlet in the tank, directly. In other embodiments, the volume of flow can be determined by liquid level sensors in the tank and a predetermined cleaning sequence can be carried out based on the signals sent by the sensors. Power can be furnished by a rechargeable power supply.

Abstract: The body of a recreational vehicle (RV) is disclosed with a stowage compartment within the body interior but separated from the interior occupant space. The stowage compartment contains a tank which serves as a waste holding tank for a water use sanitary toilet within the RV. The stowage compartment is partially disposed beneath the toilet and has an opening provided through the sidewall from the stowage space to the exterior. The opening is displaced longitudinally relative to the toilet such that when moving the waste holding tank into and out of the stowage compartment, the tank travels in a generally horizontal arcuate path. The holding tank is curved as seen in a plan view to accommodate the arcuate path. A track guide in the stowage compartment guides the path of the tank.

Abstract: A flush pump is disclosed for use in pumping water from a storage tank to a toilet bowl for flushing waste from the toilet such as in a recreational vehicle. The pump disclosed includes a housing with a bellows disposed therein with an inlet extending into the flush water storage tank and a discharge connected to the toilet bowl. A piston positioned above the bellows is used to depress the bellows upon rotation of the piston by an actuator above the piston. The actuator includes a cylindrical wall portion extending into the housing having a plurality of vertical flanges extending from the cylindrical side wall engaged with the piston side wall such that when the actuator is rotated the piston will rotate therewith. The housing side wall includes a fixed cam which is engaged with an incline flange cam follower extending from the piston side wall such that the piston will move downward upon rotation of the actuator.

Abstract: The automatic hydraulic valve control apparatus is intended for use in combination with a lavatory waste tank of a vehicle, such as an airplane. The waste tank includes a drain, a rinsing valve, and a fluid pressure charging inlet. The hydraulic valve control apparatus includes a drain control valve biased to be in an open position, a drain valve responsive to opening of the drain control valve and fluid pressure in line, a rinse valve control including a timing circuit to control the amount of pre-charging of the tank once the drain closes, and a drain control valve actuator including a timing circuit operating to close the drain after a desired period of time. An anti-siphon circuit is also provided to allow a given amount of gas to enter the charging line once rinsing and pre-charging of the waste tank are completed.

Abstract: A portable toilet having a fill cap covering the fill opening for a flush water tank. The cap includes a lid with an air vent opening and a seal member captivated in a cage extending downwardly from the lid into the tank, the cap being removably mounted on a tube for filling the tank with water. An air path from the atmosphere to tank is defined by the lid vent opening and an annulus around the seal. The cage is inserted into the tube and should the water splash in the tube the seal is forced upwardly and against the vent opening to prevent water from escaping.

Abstract: A vacuum toilet system for a vehicle (such as a boat) has numerous advantages. A single pump with valves on opposite sides of it may be used as both the vacuum source and for discharging sewage from a holding tank. Two sets of multiple heads may be selectively connected to two pumps for emergency purposes. The vacuum toilet includes a sealing element with an integral movable valve engaging element including polytetrylflouroethylene and synthetic rubber, and at the same durometer (55-65). The initial passageway provided by movement of the valve with respect to the seal is disposed directly above the center line of an orifice. An anti-siphon valve assembly has a simple construction of a housing with parallel legs and anti-siphon air passage in alignment with one of the legs. A spray nozzle extends from the other legs of the anti-siphon valve assembly. The toilet funnel/orifice is universally connected to conduits.

Abstract: A fluid-flow control valve comprises a valve housing bounding a chamber and defining an inlet port for entry of fluid into the chamber and a control port for egress of fluid from the chamber. The control port is of reduced cross-sectional area relative to the chamber. The valve also comprises a valve closure member disposed in the chamber. The valve closure member is less dense than the fluid that the valve is to be used to control, so that when the chamber contains that fluid and the control port is above the closure member, the valve closure member is urged toward the control port so as to obstruct the control port. The closure member can be displaced away from the control port so as to allow fluid to flow through the control port.

Abstract: An improved vent structure for a toilet which is normally open but automatically closable depending on the water level whereby to prevent unwanted spills allows air to escape from the interior of a flush water holding tank. A cruciform shaped stem including a buoyant body attached thereto reciprocates in a bore, and a seal, provided by an interior bellows or by the buoyant body, closes the air path when the stem is buoyed upwardly by a rise in the water level.

Abstract: A jet pump macerator pump sewage handling system which provides a unique waste control system for use in mobile units such as passenger trains and ships in which multiple toilets are connected to a transfer manifold pipe which communicates with a non-clogging jet pump which is formed with a venturi and through which liquid material is driven by a macerator pump. Waste material from the toilets is drawn by the jet pump through the transfer manifold pipe and discharged into the retention tank. The macerator pump withdraws material from the retention tank, grinds it and discharges it back into the retention tank. The macerator pump has a self-cleaning feature in that it reverses and cleans itself whenever a loss in discharge pressure due to excessive solids loading is sensed. The transfer manifold pipe is virtually free from clogging due to the action of an air induction valve which keeps waste material in the manifold pipe moving without allowing it to accumulate.

Abstract: Apparatus and method for integrated passenger seat and toilet for vehicles. The apparatus includes a structural seat, an integrated toilet, a water supply, a waste system and a swivel mechanism. The method includes modifying the vehicle, supplying the apparatus, installing the apparatus and using the apparatus. The passenger seat rotates to lockable positions for use in multiple orientations. Segmented seat cushion is hingeably attached to structural seat members and molded to provide a seal with the toilet seat below. Water is pumped from a reservoir through a flexible hose to a ported water rinse ring in the toilet. Wastes are released through a flapper mechanism into a holding tank sanitarily sealed to the toilet. Privacy curtain is provided.

Abstract: A flush valve is provided for opening and closing a drain connecting a toilet bowl to a waste holding tank maintained at a partial vacuum. The flush valve is located external to the drain and comprises a pinch or nip mechanism surrounding a flexible section of the drain and an electro-mechanically operated actuator for moving the pinch mechanism to close the drain by pinching it shut or to open the drain by pulling it apart. The actuator includes a motor for moving a piston in opposite directions, and a cylinder having one end connected to the pinch mechanism and another end containing an enclosure. The piston is retained and reciprocable a limited distance within the enclosure, and a spring is interposed within the enclosure to provide biasing means between the piston and the cylinder.

Abstract: A self-contained sanitary fixture, particularly for a recreational vehicle, comprises a bench supported on a base cooperatively defining a stowage compartment. The bench contains a bowl having an outlet which connects to a tank in the stowage compartment. A valve on the tank controls passage between the bowl and the tank. The valve is itself operated from a knob on the bench through a coupling mechanism. Waste water from the bowl is collected in the tank and is disposed of by sliding the tank out of the stowage compartment through an opening in the RV's sidewall and carrying the tank to a suitable disposal site. The tank incorporates a rotatable pourspout and vent valve to facilitate pouring waste contents out of the tank. The connections between the bowl outlet and the tank and between the knob and valve automatically disconnect upon removal of the tank from the stowage compartment. Similarly they automatically reconnect when the tank is inserted back into the stowage compartment.

Abstract: A portable toilet comprises a spout via which accumulated waste contents are dumped at a suitable sanitary disposal station. The disclosed embodiment of portable toilet comprises separably mounted seat and holding tank sections which cooperatively define a storage housing for the spout when it is not in use. For dumping the two sections are separated. The spout is rotatably mounted in an aperture in the top wall of the holding tank and is swung from its stored position and a cap at the end of the spout is unscrewed. A vent valve is also provided in the top wall of the holding tank and it is manually operated by the person dumping the holding tank so as to vent the head space during dumping.

Abstract: A portable toilet of the type having a waste holding tank which is separable from a bowl unit of the toilet. The tank includes a vent for permitting entry of air to the holding tank during emptying thereof. This avoids surging of the contents of the tank during emptying, assuring a smooth flow of the liquid and minimizing splashing. In a preferred embodiment, the vent takes the form of a sleeve projecting upwardly from the holding tank and defining a vent passageway, and a cap on the sleeve which can be manually raised to open the vent passageway but which is automatically depressed to close the vent when the bowl unit is secured to the holding tank.

Abstract: A portable toilet enclosure comprises a base and sidewalls attached to sides of the base. The base has a wall in which a portable toilet is disposed. A moveable wall is supported on the sidewalls and is operable to a closed position in which the portable toilet is concealed from view and to an open position which provides use of the portable toilet in the usual manner. The sidewalls incorporate integral hand grips along the top. The bottom edges of the sidewalls provide support for the enclosure on an underlying surface. A pair of wheels are mounted at the lower front corners of the enclosure. With the toilet resting on its sidewalls, the wheels are slightly out of contact with the underlying surface. Forward tipping of the enclosure brings the wheels into contact with the underlying surface while at the same time elevating the lower edges of the sidewalls from the underlying surface so that the enclosure can be rolled.

Abstract: A desirable travel trailer can be constructed so that the internal floor within such a trailer is capped by a series of joists located on the chassis of the trailer. The spaces between the joists can be used to hold various tanks and other items assocated with the use of the trailer. Preferably the tanks which are expected to be heaviest as the trailer is used are located directly above the undercarriage of the trailer so that the tongue weight of the trailer is not altered or significantly altered as the weight of such tanks are changed due to changes in their contents.

Abstract: A portable toilet with a movable spout via which accumulated waste contents are dumped at a suitable sanitary disposal station. The portable toilet has separably mounted seat and holding tank sections which are separated for dumping. The spout is rotatably mounted in an aperture in the top wall of the holding tank and is swung from its stored position to a discharge position extending away from the holding tank and the one dumping the tank. A vent valve is also provided in the top wall of the holding tank and it is manually operated by the person dumping the holding tank so as to vent the head space during dumping, and a waste inlet valve on the tank is locked in its closed position during dumping by an auto lock actuating handle which is located adjacent the vent valve and provides a convenient holding handle for the tank during dumping.

Abstract: An odor trap assembly (10) comprising a drain hose unit (12) connected between a holding tank inlet (12) connected between a holding tank inlet (20) and a remote collection receptacle (50); and, a framework unit (11) having at least one elevated support surface (14) formed intermediate its ends; wherein the height of the said at lest one elevated support surface (14) is sufficient to create a liquid barrier (100) within the drain hose unit (12) when a portion of said drain hose unit (12) is draped over said at least one elevated (12) support surface.

Abstract: Self-contained bathroom unit including a rigid L-shaped tank enclosure and the toilet attached thereto, the enclosure having a downwardly inclined lower surface and an upwardly raised top surface, the enclosure additionally having a sewage pump positioned in a collection sump area, the bathroom unit additionally having connections for water inlets, sewage outlets, vents and attachments for other appliances.

Abstract: A sewage treatment system includes a toilet, vacuum tank, and vacuum pump. The toilet has a discharge portion at its bottom, and a foot operated valve selectively allows, or blocks, passage of water and waste from the toilet bowl into the discharge. When the valve is opened in rushing air forces waste and water from the bowl at high velocity so that the waste fragments. The vacuum tank is connected to the toilet discharge and is disposed directly below it, and has an outlet at its bottom and a dome-shaped baffle, with side openings, covering the vacuum tank outlet. A vacuum switch is operatively connected to the vacuum tank and controls the vacuum pump. The pump is operatively connected by a conduit to the vacuum tank outlet. The vacuum tank outlet has a diameter about half the size of that of the vacuum tank inlet.

Abstract: A hydraulically operated drain valve is interposed in the cleaning fluid path before the spray/rinse outlet. The fluid under pressure activates a piston which operates the drain valve. A precharge reservoir is also interposed in the supply line before the spray rinse outlet to store a measured precharge which drains into the tank after the drain valve has closed. A manual override is provided to open the drain valve in the event of a failure of the hydraulic system.