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| Number | Title | Issue Date |
| 7207073 | Vacuum assisted toilet 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 controll... | 04/24/2007 |
| 7005077 | Shipboard human waste treatment for removing solids A method and system for separating human waste solids from liquid for a shipboard toilet system that allows for the separation of solid waste, compaction of the solid waste and storage of solid waste. Wastes are deposited into a shipboard toilet system that uses vac... | 02/28/2006 |
| 6977005 | Waterless vacuum toilet system for aircraft 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-inhi... | 12/20/2005 |
| 6910231 | Toilet system with a toilet pan A toilet system which can be rinsed by a rinsing device. A pipe is connected to the toilet pan and leads to a sanitation pipe. Means are provided for transporting a suction material from the toilet pan into the pipe and into the sanitation pipe. Said means comprise ... | 06/28/2005 |
| 6330725 | Vacuum toilet system for a vehicle A vacuum toilet system for a vehicle, notably a passenger aircraft, comprising a plurality of toilets (1), a collecting tank (4), a duct system (3) which connects the toilets (1) with the collecting tank (4) via one flush valve (2) per toilet, a vacuum ge... | 12/18/2001 |
| 6143185 | Treatment system for aircraft toilet waste water A system is described for the treatment of aircraft toilet waste water to permit discharge of the treated water to the atmosphere during flight, utilizing the pressure differential that is created between the aircraft's cabin pressure and the external atm... | 11/07/2000 |
| 5980756 | Treatment method and system for aircraft toilet waste water A method and system are described for the treatment of aircraft toilet waste water to permit discharge of the treated water to the atmosphere during flight, utilizing the pressure differential that is created between the aircraft's cabin pressure and the ... | 11/09/1999 |
| 5792369 | Apparatus and processes for non-chemical plasma ion disinfection of water Apparatus and processes for non-chemical disinfection of a wide variety of biologically contaminated water streams include a canister with flow control means built therein such that a small portion of a water stream is exposed to disinfecting salts and re... | 08/11/1998 |
| 5350369 | Apparatus and methods for closed collection of human wastes A collection, storage and disposal system for human wastes. An externally positionable patient interface directs wastes through a conduit to a storage container. Accumulated wastes are sealed within the storage container to prevent cross-contamination. Th... | 09/27/1994 |
| 5342583 | Patient's stool and urine disposing apparatus An automatic stool and urine disposing apparatus provides disposal even if a patient is unconscious or is disabled, without requiring the help of a care taker. This apparatus is composed of a wearing section, a disposal device installed in an aperture in ... | 08/30/1994 |
| 5165457 | Vacuum sewer arrangement A vacuum sewer arrangement comprises a valve controlled air inlet duct to let air into the vacuum sewer at a position downstream of the sewer valve. The sewer valve can then be closed immediately after the sewage has passed into the vacuum sewer, because ... | 11/24/1992 |
| 5035011 | Self draining sanitation system A drain valve is provided for connection to a water supply line for draining water in a vacuum flush aircraft sanitation system. The valve comprises a housing having a fluid inlet and a fluid outlet. The housing also includes a pressure chamber with a dia... | 07/30/1991 |
| 4974264 | Manually operated vacuum flush water closet A vacuum flush water closet having the bowl, rim and pedestal made of china. The water closet has a self contained flushing water dispensing valve and sewage discharge valve control system operatively mounted around and under the bowl. The water closet is... | 12/04/1990 |
| 4955090 | Zero gravity toilet A toilet, particularly adapted for handling liquid and solid bodily waste in a zero gravity environment, including a housing with a main wall having a central waste-receiving opening therein, and a plurality of toroidal elements in close stacked relations... | 09/11/1990 |
| 4942632 | Method for waste collection and storage A method and apparatus for collection of fecal matter designed to operate efficiently in a zero gravity environment. The system comprises a waste collection area within a body having a seat opening. Low pressure within the waste collection area directs fe... | 07/24/1990 |
| 4937891 | Valve for waste collection and storage A method and apparatus for collection of fecal matter designed to operate efficiently in a zero gravity environment. The system comprises a waste collection area within a body having a seat opening. Low pressure within the waste collection area directs fe... | 07/03/1990 |
| 4905325 | Automatic waste dump and cleaning system 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 predetermine... | 03/06/1990 |
| 4870709 | Apparatus for waste collection and storage An apparatus for collection of fecal matter designed to operate efficiently in a zero gravity environment. The system comprises a waste collection area within a body having a seat opening. Low pressure within the waste collection area directs fecal matter... | 10/03/1989 |
| 4811754 | Rinse water valve for vacuum toilet system 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... | 03/14/1989 |
| 4791688 | Jet pump macerator pump sewage handling system 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-clog... | 12/20/1988 |
| 4783859 | Aircraft toilet flush valve 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 secti... | 11/15/1988 |
| 4713847 | Vacuum toilet system A vacuum toilet system comprises a waste-receiving bowl having an outlet, a sewer pipe that can be placed at a pressure that is lower than that in the interior of the waste-receiving bowl, and a discharge valve connected between the sewer pipe and the out... | 12/22/1987 |
| 4520513 | Automatic vacuum urinal flush mechanism An automatic flushing apparatus for vacuum flow system urinals. A pressure ensing switch responds to the hydrostatic pressure resulting from one or two urinations and directs the system vacuum to both a water dispensing valve and the main discharge valve t... | 06/04/1985 |
| 4376315 | Vacuum flush valve A flexible valve element in the form of a flexible diaphragm movable between open and closed positions for opening or closing the drain. By operation of a control pressure chamber formed over the outer or exterior side of the diaphragm and which operates ... | 03/15/1983 |
| 4360933 | Urine suction and collection device for a vacuum suction type urinating aid A urine suction and collection device for a vacuum suction type urinating aid which contains a urine receiver provided with a urine suction opening to be applied to a urinating region includes, a urine transport tube connected, at one end, with the urine ... | 11/30/1982 |
| 4357719 | Non recirculating method of disposing of waste products for aircrafts A method of flushing a toilet for aircraft or the line using vacuum and pressure, in which there is a toilet or other waste receiving bowl, a waste the holding tank, and a valve means for opening or closing the drain line. A vacuum is created in the waste... | 11/09/1982 |
| 4332041 | Pressurized drain for toilet waste tank A drainage apparatus for an aircraft lavatory system includes a waste holding tank that receives waste from the individual toilet units. The waste holding tank has a pressurization port and a waste drain opening formed in an upper portion thereof. A blowe... | 06/01/1982 |
| 4297751 | Sewer system A sewer system in which partial vacuum is used for transporting sewage through a sewer pipe to a collecting chamber or the like. The system comprises only a few sewage producing units, preferably only one at a time usable unit. The length of the sewer pip... | 11/03/1981 |
| 4276663 | Toilet facility A sanitary toilet facility for disposal of human solid and liquid waste having a bowl section with a surface contoured to sealingly engage the body of the user. The bowl is connected to a waste disposal pipe to which is connected a vacuum source. Spray no... | 07/07/1981 |
| 4275470 | Vacuum-flush toilet arrangement for aircraft A non-circulating vacuum operated waste disposal system for aircraft having a toilet bowl connected to a vacuum waste holding tank by a drain connected to said bowl and to the vacuum waste holding tank. There is a flush valve in the drain having a flexibl... | 06/30/1981 |
| 4214324 | Human waste storage and disposal systems for railroads or the like A human waste storage and disposal system for railroads including a toilet bowl, a discharge outlet connected to the bowl, a flushing fluid inlet for flushing the bowl and a vertically disposed receiver coupled to the outlet for receiving the contents dis... | 07/29/1980 |
| 4202061 | Lavatory wastewater disposal system for aircraft In an airplane having a pressurized passenger section, with a lavatory sink. The waste water from the lavatory sink is directed either to a toilet tank where it is stored, or to a drain mast line where it is discharged overboard during in-flight operation... | 05/13/1980 |
| 4063315 | Vacuum toilet system A vacuum flush waste disposal system for aircraft; wherein, the required vacuum is acquired at altitude through the differential pressure between the aircraft cabin pressure and the ambient pressure above approximately 15,000 feet. When the aircraft is be... | 12/20/1977 |
| 4041554 | Vacuum flush water closet A vacuum flush water closet having a bowl and rim which are made from steel stampings covered with chemical resistant procelain. The water closet has a self-contained flushing water and sewage valve discharge control system which is operatively mounted ar... | 08/16/1977 |
| 3995328 | Vacuum toilet system A vacuum flush waste diposal system for aircraft; wherein the required vacuum is acquired at altitude through the differential pressure between the aircraft cabin pressure and the ambient pressure above approximately 15,000 feet. When the aircraft is belo... | 12/07/1976 |
