Abstract: Vacuum toilet flush valves. The disclosure uses a precise positioning of a magnet with respect to a flush valve plate in order to identify absolute alignment accurately.

Abstract: Methods and systems for equipping a toilet with hygiene and safety features by controlling and reducing potential escape of liquid waste from the toilet.

Abstract: A disinfection system for treating water. In a specific example, the system treats water prior to its upload to an aircraft or other passenger transportation vehicle. One or more replaceable filters are positioned within a filter chamber housing in order to expose water flowing through the system to filtration treatment.

Abstract: A polar end ring mechanism for use with composite pressure vessels. The end ring is designed to support a pressure vessel during its formation via filament winding. The end ring helps define an opening at one of the polar ends of a tank. Spikes positioned along a portion of the end ring help prevent rotation or translation of the tank during formation and provide an improved mechanical lock with the tank body. A cap may then be secured to the polar end ring after formation in order to close the pressure vessel.

Abstract: The present application generally relates to aircraft water management. The disclosed system provides an initial step of verifying the amount of available water on board and dynamically regulating water usage during flight based on projections and comparisons between projections and actual usage. The system implements a series of water conservation strategies modeled on historical data, using a control system to manage water usage.

Abstract: An ultraviolet (UV) light disinfection system for treating water prior to its delivery to a water usage device. One or more UV light emitting diodes (LEDs) are positioned within a water system floor interface in order to expose water flowing through the system to germicidal light treatment.

Abstract: Systems and methods for managing waste (including liquid, solid, and mixed waste) without using a sink, worktop, or countertop disposal feature. Specific examples provide particular use in connection with an aircraft or other vehicle galley, lavatory, or any other location in which waste that requires disposal is generated. The disclosed embodiments may be installed in an initial galley or lavatory, or they may be used to retrofit an existing environment, such that an entire new disposal system or new sink footprint is not required.

Abstract: Embodiments of the present disclosure relate generally to a liquid level sensor system that allows ease of connection and disconnection of a removable vessel (such as a toilet bowl) from a stationary unit (such as a toilet frame). The system provides at least one liquid level sensor (a first part of the sensor probe connection) mounted to the removable vessel, a liquid level sensor circuit board mounted to the unit, and a connection feature (a second part of a sensor probe connection) configured to extend between the sensor and the circuit board. When the removable vessel is removed from the vessel, the sensor probe connection is disconnected without the need for manual intervention. Installation of multiple probes and varying their location can support detection of a single or several discrete levels, or provide for any required redundancy of detection.

Abstract: Disclosed are systems and methods of managing grey water or other recycled water onboard an aircraft based on demand within the aircraft. In some cases, the grey water is obtained from a lavatory or galley sink of the aircraft and is treated to purify and/or filter the grey water. The treated grey water can be routed within the aircraft according to a control scheme that accounts for demand within the aircraft. For example, some or all of the treated water may undergo electrolysis to produce oxygen gas (O2) and hydrogen gas (H2), some or all of which may be fed into the fuel cell system and used in a chemical reaction to produce electrical energy and other fuel cell by-products that can be directed to various aircraft systems and/or the aircraft cabin/lavatories.

Abstract: Embodiments of the present disclosure relate generally to systems and methods for reducing sound in vacuum toilets. In one example, multiple rinse injections are used at appropriately timed intervals in order to reduce the vacuum flush sound levels.

Abstract: Embodiments of the present disclosure relate generally to a toilet bidet system for use on a passenger transportation vehicle. In particular, there is described a bidet rinse ring that converts a standalone toilet to a combined toilet and bidet system. Designs find particular use onboard passenger transportation vehicles, such as aircraft. Such systems benefit from efficient space management and generally cannot support a separate toilet and bidet. The bidet rinse ring described herein may come factory-mounted on the toilet. In other examples, the bidet rinse ring may replace a standard rinse ring in order to retrofit an existing toilet.

Abstract: An ultraviolet (UV) light disinfection system for treating water prior to its delivery to a water usage device. One or more UV light emitting diodes (LEDs) are positioned within a water system floor interface in order to expose water flowing through the system to germicidal light treatment.

Abstract: Methods and systems for equipping a toilet with hygiene and safety features by controlling and reducing potential escape of liquid waste from the toilet.

Abstract: Methods and systems for equipping a toilet with hygiene and safety features by controlling and reducing potential escape of liquid waste from the toilet.

Abstract: Disclosed are systems and methods of managing grey water or other recycled water onboard an aircraft based on demand within the aircraft. In some cases, the grey water is obtained from a lavatory or galley sink of the aircraft and is treated to purify and/or filter the grey water. The treated grey water can be routed within the aircraft according to a control scheme that accounts for demand within the aircraft. For example, some or all of the treated water may undergo electrolysis to produce oxygen gas (O2) and hydrogen gas (H2), some or all of which may be fed into the fuel cell system and used in a chemical reaction to produce electrical energy and other fuel cell by-products that can be directed to various aircraft systems and/or the aircraft cabin/lavatories.

Abstract: Embodiments of the present disclosure relate generally to a reservoir (40) that is easily removed from a grey water flush system. The reservoir is made modular so that rather than removing an entire reservoir/pump/circuitry system, the reservoir (40) can be separately removed from the system. The reservoir can also be made disposable, which can save cleaning and refurbishment costs. This can also increase turn-around time for maintenance of the system.

Abstract: Embodiments of the present disclosure relate generally to a toilet bidet system for use on a passenger transportation vehicle. In particular, there is described a bidet rinse ring that converts a standalone toilet to a combined toilet and bidet system. Designs find particular use onboard passenger transportation vehicles, such as aircraft. Such systems benefit from efficient space management and generally cannot support a separate toilet and bidet. The bidet rinse ring described herein may come factory-mounted on the toilet. In other examples, the bidet rinse ring may replace a standard rinse ring in order to retrofit an existing toilet.

Abstract: Methods and systems for equipping a toilet with hygiene and safety features by controlling and reducing potential escape of liquid waste from the toilet.

Abstract: Embodiments of the present invention provide systems and methods for disposal of liquid and food into a sink basin. The disclosed system cooperates with and delivers the received waste material to the main waste system on-board the vehicle. This is typically an aircraft waste tank. The system does not require a manual flush, but includes a sensor system that activates drainage of the holding line when the liquid and/or other waste material reaches a certain level therein. The disclosed system combines the functionalities of a common galley sink and a galley waste disposal unit, but occupies only the space envelope of an existing galley sink. The use of an existing galley sink means that no additional space on the countertop is required.

Abstract: Systems and methods for treating and disinfecting water contained in a potable water tank. The systems and methods generally use one or more UV LEDs that are positioned along various portions of the water tank and that are configured to emit UV light/irradiation into the water contained therein.