Patent Description:
Commercial aircraft are used to transport passengers between various locations. A typical commercial aircraft includes one or more lavatories within an internal cabin.

Space within a commercial aircraft is limited. Notably, a lavatory within a commercial aircraft is typically relatively small in order to reduce space of the lavatory and increase space for other areas, such as passenger seating. A larger lavatory would necessarily occupy more space within a commercial aircraft, and may prevent additional passenger seating within an internal cabin. Aircraft operators typically prefer to have additional passenger seating within an internal cabin, as the additional passenger seating leads to increased revenues.

A typical lavatory within an internal cabin of an aircraft typically occupies approximately <NUM>%-<NUM>% more longitudinal area (that is, an area that extends along and/or parallel to a longitudinal axis) of the internal cabin than a seat assembly. In general, current lavatories generally displace six to twelve passenger seats. Certain internal cabins may be rearranged to ensure only six displaced passenger seats, but thereby cause cascading impacts to surrounding interior features, such as other monuments or areas within the internal cabin. Overall, including lavatories within an internal cabin of a commercial aircraft, while typically necessary, reduces space for other components, monuments, or the like within the internal cabin, such as revenue-generating seats.

Further, persons of reduced mobility (such as individuals having disabilities, injuries, or a reduced ability to move) may find the confined space of a lavatory within a commercial aircraft relatively difficult to maneuver therein. Such individuals may have difficulty moving within the lavatory, such as between an entrance and a toilet, and between a toilet and a sink.

Accordingly, certain manufacturers have designed larger lavatories that are specifically designed for persons of reduced mobility. However, in expanding the size of the lavatory, space for other components (such as passenger seating) within an internal cabin is necessarily reduced.

<CIT>, according to its abstract, states a lavatory monument configured to be positioned in an aircraft interior that includes an enclosure that includes first, second, third and fourth walls, and defines a lavatory interior, a first lavatory compartment that includes a first urinal unit positioned therein, and a second lavatory compartment that includes a second urinal unit positioned therein. The first lavatory compartment includes a first door and the second lavatory compartment includes a second door. A divider wall separates at least a portion of the first lavatory compartment from at least a portion of the second lavatory compartment. The first door is positioned on one of the first or second walls and the second door is positioned on one of the first or third walls.

<CIT>, according to its abstract, states that provided is an aircraft lavatory unit that advantageously allows for a reduced number of parts, simplified assembly, and reduced costs while ensuring convenience. First and second lavatories are provided adjacent to one another within a structural frame. Respective sinks of the lavatories are disposed by being attached to the partition wall. A trash insertion port is provided on a wall surface of each base. A single storage chamber provided within the bases of the sinks of the lavatories extends into the bases of the sinks of the lavatories through an opening provided in the partition wall. A trash can device has a single trash can housed in the storage chamber and a single fire extinguisher. A water heater is singularly provided, which is disposed within the base of one of the sinks.

<CIT>, according to its abstract, states an aircraft lavatory unit that is advantageous in increasing the number of seats. The respective bowls of the wash basins of a first and second lavatories are provided at locations with the same position along the lengthwise direction of a partition wall and locations with different positions along the height direction of the partition wall. The bowl of the first lavatory is disposed with a part protruding from the partition wall into the second lavatory side. The bowl of the second lavatory is disposed with a part protruding from the partition wall into the first lavatory side.

<CIT> relates to a waste receptacle provided in a sanitary equipment room such as a toilet or a washroom.

<CIT>, according to its abstract, states that a monument is configured to be positioned in the interior of an aircraft that includes first, second, third and fourth sides and first and second lavatories spaced apart from one another by at least a portion of a galley storage section that is open to the first side. The first and second sides are opposite to one another and the third and fourth sides are opposite to one another. The first lavatory defines a first lavatory interior and includes a first toilet therein and the second lavatory defines a second lavatory interior and includes a second toilet therein.

<CIT>, according to its abstract, states that a retrofittable persons with reduced mobility (PRM) lavatory complex occupies the same footprint as a preexisting outboard dual-lavatory complex. The two lavatories are separated by a common articulating wall that is typically positioned in a standard operating position in which the lavatory complex operates as a standard dual-lavatory complex. The common wall may be moved by a flight attendant or passenger to a PRM position in which the lavatory spaces are combined to accommodate a person with reduced mobility. In the most preferred embodiments, the common wall may be articulated to the PRM position from within the lavatory with the doors closed, which facilitates the conversion to a PRM lavatory and advantageously avoids intrusion into the aisle space during the conversion.

A need exists for a lavatory system including multiple lavatory units that occupy less space than known lavatories within an internal cabin of a vehicle. A need exists for a lavatory system including multiple lavatory units that occupy less space than an equivalent number of individual lavatories. Further, a need exists for a lavatory system that is readily and easily accessible by persons of limited mobility. Also, a need exists for a multi-unit lavatory system that does not reduce space for additional seating within an internal cabin of a vehicle.

According to the present disclosure, a vehicle as defined in claim <NUM> and a method as defined in claim <NUM> are provided. Further embodiments of the claimed invention are defined in the dependent claims. Although the invention is only defined by the claims, the below embodiments, examples, and aspects are present for aiding in understanding the background and advantages of the invention.

With those needs in mind, the present disclosure provides a lavatory system within an internal cabin of a vehicle. The lavatory system includes an enclosure defining an interior chamber, a first lavatory unit within the interior chamber, and a second lavatory within the interior chamber. The first lavatory unit is adjacent to the second lavatory unit. In at least one example, the enclosure is a single monument within the internal cabin. As an example, the first lavatory unit and the second lavatory unit are side-to-side across a portion of the internal cabin. As an example, the first lavatory unit is inboard from the second lavatory unit within the internal cabin, and the second lavatory unit is outboard from the first lavatory unit within the internal cabin.

In at least one example, the enclosure includes a first end wall. An inboard wall is connected to the first end wall. The inboard wall faces an aisle of the internal cabin. A second end wall is connected to the inboard wall. The second end wall is opposite from the first end wall. The second end wall faces an egress path of the internal cabin. An outboard wall is connected to the first end wall and the second end wall.

In at least one example, the second end wall includes a first wall segment that is parallel to the first end wall and perpendicular to the inboard wall. An angled wall segment angles toward the first end wall and the outboard wall. A transition wall segment is connected to the angled wall segment. The transition wall segment is parallel to the inboard wall and the outboard wall. A second end wall segment is connected to the transition wall and the outboard wall. The second end wall segment is parallel to the first end wall. In at least one example, the outboard wall is a portion of an outboard wall of the internal cabin.

In at least one example, the first lavatory unit includes a first passage that connects to an aisle of the internal cabin. A first door is configured to open and close the first passage. The second lavatory unit includes a second passage that connects to an egress path of the internal cabin. A second door is configured to open and close the second passage.

In at least one example, the first lavatory unit has a first length and the second lavatory unit has a second length. The first length is greater than the second length.

The lavatory system also includes a divider wall within the interior chamber. The divider wall separates the first lavatory unit from the second lavatory unit. The divider wall is moveable between a closed position that separates the interior chamber into the first lavatory unit and the second lavatory unit, and an open position, in which the interior chamber provides an enlarged, expanded single lavatory space.

The first lavatory unit includes a first sink and a first toilet and/or urinal. The second lavatory unit includes a second sink and a second toilet.

The lavatory system also includes a barrier moveably coupled to one of the first lavatory unit or the second lavatory unit. The barrier is moveable between an extended position and a retracted position. The barrier in the extended position is disposed in front of an exit door of the vehicle. The exit door is visible within the internal cabin when the barrier is in the retracted position. The barrier may include a handle that is configured to be grasped to move the barrier between the extended position and the retracted position. The barrier may include a sign that indicates a location of one or both of the first lavatory unit or the second lavatory unit.

In at least one example, the lavatory system also includes a storage compartment extending outwardly from an outer wall of one or both of the first lavatory unit or the second lavatory unit. The storage compartment defines an internal storage space that connects to the interior chamber. For example, the storage compartment is at least a portion of a stowage bin assembly. As another example, the storage compartment is at least a portion of an end cap connected to a stowage bin assembly.

A storage access door may be disposed between the storage compartment and the interior chamber. The storage access door is configured to be moved between an open position and a closed position. The internal storage space is opened to the interior chamber when the storage access door is in the open position. The internal storage space is closed to the interior chamber when the storage access door is in the closed position. In at least one example, the storage compartment is directly connected to the interior chamber, but is not within the interior chamber.

An access opening connects the internal storage space to the interior chamber. The access opening may be formed through the outer wall.

The storage compartment may include a lighting assembly within the internal storage space. For example, the lighting assembly is operatively coupled to a storage access door of the storage compartment. The lighting assembly is configured to activate to illuminate the interior storage space when the storage access door is opened. The lighting assembly is configured to be deactivated when the storage access door is closed.

The lavatory system also includes a containment compartment common to the first lavatory unit and the second lavatory unit. The containment compartment extends through a divider wall that separates the first lavatory unit from the second lavatory unit.

In at least one example, the containment compartment includes a first interior end wall within the first lavatory unit, a front wall, a rear wall, a base, an upper counter, and a second interior end wall opposite from the first interior end wall. The second interior end wall is within the second lavatory unit. The first interior end wall, the front wall, the rear wall, the base, the upper counter, and the second interior end wall define a containment chamber of the containment compartment. A trash container may be stored within the containment compartment.

In at least one example, the containment compartment also includes an access door within one of the first lavatory unit or the second lavatory unit. The access door is moveable between an open position and a closed position. The containment compartment is exposed when the access door is in the open position. The containment compartment is closed when the access door is in the closed position.

In at least one example, the lavatory system also includes a first trash opening in the first lavatory unit. The first trash opening leads to a containment chamber of the containment compartment. A second trash opening is in the second lavatory unit. The second trash opening leads to the containment chamber of the containment compartment. As a further example, a first trash duct is connected to the first trash opening, and a second trash duct is connected to the second trash opening.

The present disclosure provides a method of forming a lavatory system within an internal cabin of a vehicle. The method includes providing an enclosure defining an interior chamber, forming a first lavatory unit within the interior chamber, and forming a second lavatory within the interior chamber. The first lavatory unit is adjacent to the second lavatory unit.

Certain examples of the present disclosure provide a vehicle including an internal cabin having an aisle and an egress path, and a lavatory system within the internal cabin, as described herein.

The present disclosure provides a lavatory within an internal cabin of a vehicle. The lavatory includes an interior chamber defined by one or more outer walls, and a storage compartment extending outwardly from at least one of outer walls. The storage compartment defines an internal storage space that connects to the interior chamber. The lavatory may be at least one lavatory unit of a lavatory system.

As an example, the storage compartment is at least a portion of a stowage bin assembly. As another example, the storage compartment is at least a portion of an end cap connected to a stowage bin assembly.

The lavatory may also include a storage access door disposed between the storage compartment and the interior chamber. The storage access door is configured to be moved between an open position and a closed position. The internal storage space is opened to the interior chamber when the storage access door is in the open position. The internal storage space is closed to the interior chamber when the storage access door is in the closed position.

In at least one example, the storage compartment is directly connected to the interior chamber, but is not within the interior chamber.

As an example, an access opening connects the internal storage space to the interior chamber. The access opening is formed through the one or more outer walls.

The storage compartment may include a lighting assembly within the internal storage space. The lighting assembly is operatively coupled to a storage access door of the storage compartment. For example, the lighting assembly is configured to activate to illuminate the interior storage space when the storage access door is opened. The lighting assembly is configured to be deactivated when the storage access door is closed.

Certain examples of the present disclosure provide a method of forming a lavatory within an internal cabin of a vehicle. The method includes defining an interior chamber of the lavatory by one or more outer walls, extending a storage compartment outwardly from at least one of the outer walls, and connecting an internal storage space of the storage compartment to the interior chamber.

The present disclosure provides a vehicle including an internal cabin, and a lavatory within an internal cabin of a vehicle, as described herein.

The present disclosure provides a lavatory system within an internal cabin of a vehicle. The lavatory system includes a first lavatory unit, a second lavatory adjacent to the first lavatory unit, and a containment compartment common to the first lavatory unit and the second lavatory unit.

The containment compartment extends through a divider wall that separates the first lavatory unit from the second lavatory unit.

As an example, the containment compartment includes a first interior end wall within the first lavatory unit, a front wall, a rear wall, a base, an upper counter, and a second interior end wall opposite from the first interior end wall. The second interior end wall is within the second lavatory unit. The first interior end wall, the front wall, the rear wall, the base, the upper counter, and the second interior end wall define a containment chamber of the containment compartment. A trash container may be stored within the containment compartment.

In at least one example, the containment compartment includes an access door within one of the first lavatory unit or the second lavatory unit. The access door is moveable between an open position and a closed position. The containment compartment is exposed when the access door is in the open position. The containment compartment is closed when the access door is in the closed position.

In at least one example, a first trash opening in the first lavatory unit. The first trash opening leads to a containment chamber of the containment compartment. A second trash opening is in the second lavatory unit. The second trash opening leads to the containment chamber of the containment compartment. As a further example, a first trash duct is connected to the first trash opening, and a second trash duct connected to the second trash opening.

The present disclosure provides a method of forming a lavatory system within an internal cabin of a vehicle. The method includes providing a containment compartment common to a first lavatory unit and a second lavatory unit that is adjacent to the first lavatory unit.

The present disclosure provides a vehicle including a containment compartment, as described herein.

Certain examples of the present disclosure provide a lavatory system including two lavatory units within a common enclosure, such as a single, common, monument. The lavatory units are arranged so as to displace only a single three seat assembly unit. In at least one example, the lavatory system is located proximate to an end of a column of seats and an exit doorway. The lavatory system allows aircraft operators to have four lavatories (two lavatories per lavatory system) within an area, and at the same time retain as many as eighteen passenger seats, as compared to conventional lavatories within a commercial aircraft. As such, examples of the present disclosure provide lavatory systems that allow for aircraft operators to maintain or even increase revenue-generating passenger seats within an internal cabin.

<FIG> illustrates a perspective front view of an aircraft <NUM>, according to an example of the present disclosure. The aircraft <NUM> includes a propulsion system <NUM> that includes engines <NUM>, for example. Optionally, the propulsion system <NUM> may include more engines <NUM> than shown. The engines <NUM> are carried by wings <NUM> of the aircraft <NUM>. In other examples, the engines <NUM> may be carried by a fuselage <NUM> and/or an empennage <NUM>. The empennage <NUM> may also support horizontal stabilizers <NUM> and a vertical stabilizer <NUM>.

The fuselage <NUM> of the aircraft <NUM> defines an internal cabin <NUM>, which includes a flight deck or cockpit, one or more work sections (for example, galleys, personnel carry-on baggage areas, and the like), one or more passenger sections (for example, first class, business class, and coach sections), one or more lavatories, and/or the like. The internal cabin <NUM> includes one or more lavatory systems, lavatory units, or lavatories, as described herein.

Alternatively, instead of an aircraft, examples of the present disclosure may be used with various other vehicles, such as automobiles, buses, locomotives and train cars, watercraft, and the like. Further, examples of the present disclosure may be used with respect to fixed structures, such as commercial and residential buildings.

<FIG> illustrates a top plan view of an internal cabin <NUM> of an aircraft, according to an example of the present disclosure. The internal cabin <NUM> may be within the fuselage <NUM> of the aircraft, such as the fuselage <NUM> of <FIG>. For example, one or more fuselage walls may define the internal cabin <NUM>. The internal cabin <NUM> includes multiple sections, including a front section <NUM>, a first class section <NUM>, a business class section <NUM>, a front galley station <NUM>, an expanded economy or coach section <NUM>, a standard economy of coach section <NUM>, and an aft section <NUM>, which may include multiple lavatories and galley stations. It is to be understood that the internal cabin <NUM> may include more or less sections than shown. For example, the internal cabin <NUM> may not include a first class section, and may include more or less galley stations than shown. Each of the sections may be separated by a cabin transition area <NUM>, which may include class divider assemblies between aisles <NUM>.

The aisles <NUM>, <NUM>, and <NUM> extend to egress paths or door passageways <NUM>. Exit doors <NUM> are located at ends of the egress paths <NUM>. The egress paths <NUM> may be perpendicular to the aisles <NUM>, <NUM>, and <NUM>. The internal cabin <NUM> may include more egress paths <NUM> at different locations than shown. As described herein, lavatory systems may be located at or proximate to intersections of the aisles <NUM>, <NUM>, <NUM> and the egress paths <NUM>.

<FIG> illustrates a top plan view of an internal cabin <NUM> of an aircraft, according to an example of the present disclosure. The internal cabin <NUM> is an example of the internal cabin <NUM> shown in <FIG>. The internal cabin <NUM> may be within a fuselage <NUM> of the aircraft. For example, one or more fuselage walls may define the internal cabin <NUM>. The internal cabin <NUM> includes multiple sections, including a main cabin <NUM> having passenger seats <NUM>, and an aft section <NUM> behind the main cabin <NUM>. It is to be understood that the internal cabin <NUM> may include more or less sections than shown.

The aisle <NUM> extends to an egress path or door passageway <NUM>. Exit doors <NUM> are located at ends of the egress path <NUM>. The egress path <NUM> may be perpendicular to the aisle <NUM>. The internal cabin <NUM> may include more egress paths than shown. As described herein, lavatory systems may be located at or proximate to intersections of the aisle <NUM> and one or more egress paths <NUM>.

<FIG> illustrates a perspective interior view of an internal cabin <NUM> of an aircraft, according to an example of the present disclosure. The internal cabin <NUM> is an example of the internal cabin <NUM>, shown in <FIG>. The internal cabin <NUM> includes outboard walls <NUM> connected to a ceiling <NUM>. Windows <NUM> may be formed within the outboard walls <NUM>. A floor <NUM> supports rows of seats <NUM>. As shown in <FIG>, a row <NUM> may include two seats <NUM> on either side of an aisle <NUM>. However, the row <NUM> may include more or less seats <NUM> than shown. Additionally, the internal cabin <NUM> may include more aisles than shown.

Overhead stowage bin assemblies <NUM> are secured to the ceiling <NUM> and/or the outboard wall <NUM> above and inboard from the PSU <NUM> on either side of the aisle <NUM>. The overhead stowage bin assemblies <NUM> are secured over the seats <NUM>. The overhead stowage bin assemblies <NUM> extend between the front and rear end of the internal cabin <NUM>. Each stowage bin assembly <NUM> may include a pivot bin or bucket <NUM> pivotally secured to a strongback (hidden from view in <FIG>). The overhead stowage bin assemblies <NUM> may be positioned above and inboard from lower surfaces of the PSUs <NUM>. The overhead stowage bin assemblies <NUM> are configured to be pivoted open in order to receive passenger carry-on baggage and personal items, for example.

<FIG> illustrates a perspective internal view of a lavatory <NUM> within an internal cabin of a vehicle, such as any of the internal cabins described herein. The lavatory <NUM> is an example of an enclosed space, monument or chamber, such as within the internal cabin of the aircraft <NUM>, shown in <FIG>. The lavatory <NUM> may be onboard an aircraft, as described above. Optionally, the lavatory <NUM> may be onboard various other vehicles. In other examples, the lavatory <NUM> may be within a fixed structure, such as a commercial or residential building. The lavatory <NUM> includes a base floor <NUM> that supports a toilet <NUM> (and/or a urinal), cabinets <NUM>, and a sink <NUM> or wash basin. The lavatory <NUM> may be arranged differently than shown. The lavatory <NUM> may include more or less components than shown.

<FIG> illustrates a top view of a lavatory system <NUM> within an internal cabin <NUM>, according to an example of the present disclosure. The lavatory system <NUM> may be used within any of the internal cabins described herein, such as the internal cabins shown and described with respect to <FIG>.

The lavatory system <NUM> includes a single enclosure <NUM> (such as a monument) that includes a first lavatory unit <NUM> adjacent to a second lavatory unit <NUM>. That is, the lavatory system <NUM> is a single monument. The first lavatory unit <NUM> and the second lavatory unit <NUM> are disposed laterally across a portion of the internal cabin <NUM>, instead of longitudinally along an aisle <NUM>. That is, the first lavatory unit <NUM> and the second lavatory <NUM> are side-to-side across a portion of the internal cabin <NUM>, instead of end-to-end along a length of the internal cabin <NUM>. In this manner, the lavatory system <NUM> extends over a smaller longitudinal portion (such as one longitudinal area <NUM>) of the internal cabin <NUM>, instead of an extended longitudinal portion (for example, two longitudinal areas (such as if the first lavatory unit <NUM> and the second lavatory unit <NUM> were end-to-end)), thereby freeing up additional space for other components, such as another monument (such as a galley), or additional passenger seats (such as a three seat assembly), which generate revenue for an aircraft operator.

The lavatory system <NUM> provides two lavatory units, such as the first lavatory unit <NUM> and the second lavatory unit <NUM>, while displacing only a single seating assembly having three passenger seats. The side-to-side configuration of the first and second lavatory units <NUM> and <NUM> provides multiple lavatory units while allowing for additional passenger seating, for example (in contrast to lavatories that are disposed end-to-end). In at least one example, the lavatory system <NUM> provides multiple lavatory units within the space of a three seating unit passenger seating assembly.

The first lavatory unit <NUM> is an inboard lavatory unit, and the second lavatory unit <NUM> is an outboard lavatory unit. It is to be understood that the terms first and second are merely for labeling purposes. A first lavatory unit may be a second lavatory unit, and vice versa.

The single enclosure (such as a monument) <NUM> that defines the lavatory system <NUM> includes a first end wall <NUM> (or first system end wall) that connects to an inboard wall <NUM> (or system inboard wall) facing the aisle <NUM>. The inboard wall <NUM> connects to a second end wall <NUM> (or second system end wall) opposite from the first end wall <NUM>. The second end wall <NUM> faces an egress path <NUM> that connects to the aisle <NUM>. In at least one example, the second end wall <NUM> includes a first wall segment <NUM> that may be parallel to the first end wall <NUM> (and perpendicular to the inboard wall <NUM>). The first wall segment <NUM> connects to an angled wall segment <NUM> that angles toward the first end wall <NUM> and an outboard wall <NUM> (or system outboard wall) that connects to the first end wall <NUM> and the second end wall <NUM>. The angled wall segment <NUM>, in turn, connects to a transition wall segment <NUM>, which may be parallel to the inboard wall <NUM> and the outboard wall <NUM>. The transition wall segment <NUM> connects to a second wall segment <NUM>, which may be parallel to the first end wall <NUM> and perpendicular to the outboard wall <NUM>. Optionally, the angled wall segment <NUM> may connect directly to the second wall segment <NUM> without the transition wall segment <NUM>. The second wall segment <NUM> connects to the outboard wall <NUM>.

In at least one example, the outboard wall <NUM> is a portion of an outboard wall of the internal cabin <NUM>, such as the outboard wall <NUM> shown in <FIG>. That is, the outboard wall <NUM>, in part, defines the internal cabin <NUM>. Using a portion of the outboard wall of the internal cabin <NUM> to provide the outboard wall <NUM> provides increased interior space within the lavatory system <NUM>. In at least one other example, the outboard wall <NUM> is a separate wall that abuts against or is otherwise proximate to the outboard wall of the internal cabin <NUM>.

The first end wall <NUM>, the inboard wall <NUM>, the second end wall <NUM> and the outboard wall <NUM> define the outer perimeter of the enclosure <NUM> (and the monument <NUM>), and an interior chamber <NUM> of the lavatory system <NUM>. That is, the enclosure <NUM> defines the interior chamber <NUM>. The enclosure <NUM> is within the internal cabin <NUM>. The enclosure <NUM> is not the internal cabin <NUM>. For example, an internal cabin may include multiple lavatories. However, the internal cabin <NUM> includes the enclosure <NUM>, which includes the first lavatory unit <NUM> and the second lavatory unit <NUM> within the interior chamber <NUM> of the enclosure <NUM> (in contrast to two distinct lavatories abutting one another). The enclosure <NUM> includes the first lavatory unit <NUM> and the second lavatory unit <NUM> within the interior chamber <NUM>. The first lavatory unit <NUM> and the second lavatory unit <NUM> are within the interior chamber <NUM>.

The first lavatory unit <NUM> includes a passage <NUM> that connects to the aisle <NUM>. A door <NUM> is moveably coupled to the first end wall <NUM> and/or the inboard wall <NUM>. The door <NUM> faces the aisle <NUM> and is configured to be moved between a closed position, in which the passage <NUM> is closed to the aisle <NUM>, and an open position, in which the passage <NUM> is open to the aisle <NUM>. When the door <NUM> is in the open position, an individual may pass between the aisle <NUM> and the first lavatory unit <NUM> through the passage <NUM>.

The second lavatory unit <NUM> includes a passage <NUM> that connects to the egress path <NUM>. A door <NUM> is moveably coupled to the second end wall <NUM> (such as the second wall segment <NUM>, and/or the outboard wall <NUM>. The door <NUM> faces the egress path <NUM> and is configured to be moved between a closed position, in which the passage <NUM> is closed to the egress path <NUM>, and an open position, in which the passage <NUM> is open to the egress path <NUM>. When the door <NUM> is in the open position, an individual may pass between the egress path <NUM> and the second lavatory unit <NUM> through the passage <NUM>.

In at least one example, a length <NUM> of the first lavatory unit <NUM> is greater than a length <NUM> of the second lavatory unit <NUM>. For example, the first lavatory unit <NUM> may extend along a greater longitudinal length of the aisle <NUM> than the second lavatory unit <NUM>. As such, the second wall segment <NUM> including the passage <NUM> of the second lavatory unit <NUM> may be recessed further toward the first end wall <NUM> as compared to the first wall segment <NUM>.

A divider wall <NUM> is disposed within the interior chamber <NUM> and extends between the first end wall <NUM> and the second end wall <NUM>. The divider wall <NUM> separates the first lavatory unit <NUM> from the second lavatory unit <NUM>. The divider wall <NUM> may include a first divider segment <NUM> that may be perpendicular to the first end wall <NUM>. The first divider segment <NUM> connects to an angled divider segment <NUM> that angles toward the inboard wall <NUM> and the first wall segment <NUM>. The angled divider segment <NUM> connects to a second divider segment <NUM> that may be parallel to the first divider segment <NUM>. The second divider segment <NUM> may connect to the transition wall segment <NUM> and/or another portion of the second end wall <NUM>.

In at least one example, the first lavatory unit <NUM> is defined between the inboard wall <NUM>, the first wall segment <NUM>, the angled wall segment <NUM>, the transition wall segment <NUM>, a first side <NUM> of the divider wall <NUM>, and an inboard segment <NUM> (that is, the portion inboard from the divider wall <NUM>) of the first end wall <NUM>. The second lavatory unit <NUM> is defined between the outboard wall <NUM>, an outboard segment <NUM> (that is, the portion outboard from the divider wall <NUM>) of the first end wall <NUM>, a second side <NUM> (opposite from the first side <NUM>) of the divider wall <NUM>, and the second wall segment <NUM> of the second end wall <NUM>.

The first lavatory unit <NUM> includes a first sink <NUM> and a first toilet <NUM> with a first standing space <NUM> in front of the first toilet <NUM>. The first sink <NUM> may be located at or proximate to a corner <NUM> defined by the first side <NUM> of the divider wall <NUM> and the inboard segment <NUM> of the first end wall <NUM>. The first toilet <NUM> may be located at or proximate to a corner <NUM> defined by the inboard wall <NUM> and the second end wall <NUM>. The term toilet as used herein includes one or both of standard toilet or a urinal.

The second lavatory unit <NUM> includes a second sink <NUM> and a second toilet <NUM> with a second standing space <NUM> in front of the second toilet <NUM>. The second sink <NUM> may be located at or proximate to a corner <NUM> defined by the second side <NUM> of the divider wall <NUM> and the second wall segment <NUM> of the second end wall <NUM>. The second toilet <NUM> may be located at or proximate to a corner <NUM> defined by the outboard wall <NUM> and the outboard segment <NUM> of the first end wall <NUM>.

The configurations of the sinks and toilets of the first lavatory unit <NUM> and the second lavatory unit <NUM> shown in <FIG> are merely exemplary. The sinks and toilets may be located at various other areas than shown.

In at least one example, a flight attendant assist space <NUM> is located in front of the second wall segment <NUM> of the second end wall <NUM>, such as in front of the passage <NUM>. The flight attendant assist space <NUM> may be proximate to an exit door at an end of the egress path <NUM>. The flight attendant assist space <NUM> is an open area in which a flight attendant may stand to assist individuals entering and exiting the egress path <NUM>. The second lavatory unit <NUM> is sized and configured to preserve a defined required area (such as a <NUM>"X <NUM>" area) for the flight attendant assist space, such as may be required by a regulatory agency (for example, the United States Federal Aviation Administration). The angled wall segment <NUM> may provide an egress flow director that guides and directs individuals toward the exit door when leaving the internal cabin <NUM>, and toward the aisle <NUM> when entering the internal cabin <NUM>.

<FIG> illustrates a top view of the lavatory system <NUM> within the internal cabin <NUM>, according to an example of the present disclosure. In this example, the first sink <NUM> of the first lavatory unit <NUM> may be coupled to the first side <NUM> of the divider wall <NUM> at an intermediate location between the first end wall <NUM> and the second end wall <NUM>, and the second sink <NUM> may be coupled to the outboard wall <NUM>. The configurations of the sinks and toilets of the first lavatory unit <NUM> and the second lavatory unit <NUM> shown in <FIG> are merely exemplary. The sinks and toilets may be located at various other areas than shown.

<FIG> illustrates a top view of the lavatory system <NUM> within the internal cabin <NUM>, according to an example of the present disclosure. The lavatory system <NUM> shown in <FIG> is similar to that shown in <FIG>, except that the divider wall <NUM> may be configured to be moved between a closed position, which separates the interior chamber <NUM> into the defined first lavatory unit <NUM> and the second lavatory unit <NUM>, and an open position, in which the interior chamber <NUM> provides an enlarged, expanded single lavatory space, which is easily and comfortably accessible by persons of limited mobility. The first sink <NUM>, the first toilet <NUM>, the second sink <NUM>, and the second toilet <NUM> may not be connected to moveable portions of the divider wall <NUM>. For example, the divider wall <NUM> may include a plurality of foldable segments <NUM> coupled together through hinges <NUM> that allow the divider wall <NUM> to be folded and disconnected from one or both of the first end wall <NUM> and the second end wall <NUM>. In this manner, the divider wall <NUM> is foldable or otherwise collapsible. The divider wall <NUM> in the collapsed position may be secured against an interior wall, and/or removed and stored within the lavatory system <NUM> or another portion of the internal cabin <NUM>. As another example, the divider wall <NUM> may be configured to telescope between open and closed positions. As another example, the divider wall <NUM> may be configured to slide between open and closed positions. As another example the divider wall <NUM> may be a curtain or drape, which may include sound-dampening elements. In short, the divider wall <NUM> may be a movable wall having segments that are configured to move in order to allow the divider wall <NUM> to be moved between open and closed positions.

<FIG> illustrates a top view of the lavatory system <NUM> within the internal cabin <NUM>, according to an example of the present disclosure. The lavatory system <NUM> shown in <FIG> is similar to that shown in <FIG>, except that the divider wall <NUM> may be configured to be moved between a closed position, which separates the interior chamber <NUM> into the defined first lavatory unit <NUM> and the second lavatory unit <NUM>, and an open position, in which the interior chamber <NUM> provides an enlarged, expanded single lavatory space, which is easily and comfortably accessible by persons of limited mobility, as described with respect to <FIG>.

<FIG> illustrates a top view of a lavatory system <NUM> within an internal cabin, according to an example of the present disclosure. In this example, the lavatory system <NUM> includes divider wall <NUM> having one or more sliding or telescoping segments <NUM>.

Referring to <FIG> and <FIG>, the lavatory system <NUM> allows for the space of three passenger seats to be occupied by two lavatory units. Traditional lavatories consume approximately <NUM>% to <NUM>% more longitudinal space than a passenger seat, resulting in six to twelve passenger seats displaced for two lavatories to be installed. A traditional lavatory area size ranges between <NUM> to <NUM> square meters (<NUM> to <NUM> square feet). In contrast, the lavatory system <NUM> as described herein provides two lavatory units, such as within a <NUM> square meter (thirteen square foot) area, which may be the same or similar area of a single triple passenger seat assembly (<NUM> X <NUM> (<NUM>" X <NUM>")).

In at least one example, the lavatory system <NUM> may located at an end of a column of seats proximate to an exit doorway. The second (or outboard) lavatory unit <NUM> opens to the egress path <NUM> such as a lateral exit passageway into the preserved space used during by flight attendants during emergency evacuations (the lavatory is not in use during this critical time). The first (or inboard) lavatory unit <NUM> opens to the aisle <NUM> or alternatively to the same egress path <NUM>. As an option, the first lavatory unit <NUM> may extend longitudinally further than the second lavatory unit <NUM> because the first lavatory unit <NUM> is inboard of the flight attendant assist space <NUM>.

<FIG> illustrates a perspective view of the lavatory system <NUM> proximate to an exit door <NUM>, such as that of an aircraft.

The exit door <NUM> is at an end of the egress path <NUM>.

The lavatory system <NUM> includes a moveable barrier <NUM> that is moveably coupled to the second lavatory unit <NUM>. The barrier <NUM> can be a panel, wall, screen, door, curtain, or the like that is configured to be moved between an extended position, as shown in <FIG>, in which the barrier <NUM> is disposed in front of the exit door <NUM>, and a retracted position, in which the exit door <NUM> is visible within the internal cabin <NUM>.

The barrier <NUM> can be movably coupled to the second lavatory unit <NUM>, another portion of the lavatory system <NUM>, or a portion of the internal cabin, such as through hinges, slides and tracks, or the like. For example, the barrier <NUM> is configured to pivot between the extended position and the retracted position, such as about one or more hinges. As another example, the barrier <NUM> is configured to slide between the extended position and the retracted position. As another example, the barrier <NUM> is configured to unfold and fold between the extended position and the retracted position.

As passengers are entering and exiting the internal cabin <NUM>, such as into the egress path <NUM> through the exit door <NUM> in the opened position, the barrier <NUM> is in the retracted position. During a flight, the barrier <NUM> is moved to the extended position, as shown in <FIG>. In the extended position, the barrier <NUM> conceals the exit door <NUM>, or at least a portion thereof (such as a handle <NUM>), which protects the exit door <NUM> from being touched, and may assure certain individuals that there is no risk of the handle <NUM> being inadvertently grasped.

<FIG> illustrates a front view of the barrier <NUM> in the extended position.

The barrier <NUM> can include a handle <NUM>, which may be grasped to move the barrier <NUM> between the extended and retracted positions. The barrier <NUM> can also include a sign <NUM> that indicates a location of the second lavatory unit <NUM> (shown in <FIG>), particularly because the door of the second lavatory unit <NUM> may be hidden from the view by an extended portion of the first lavatory unit <NUM>. The sign <NUM> can be painted or printed on the barrier <NUM>. As another example, the sign <NUM> can be a decal. As another example, the sign <NUM> can be a plate or panel mounted on the barrier <NUM>. As another example, the sign <NUM> can be illuminated, such as through one or more light assemblies.

The barrier <NUM> may be used with any of the lavatory systems <NUM> described herein. In an unclaimed example, the lavatory systems <NUM> may not include the barrier <NUM>.

<FIG> illustrates a perspective view of a lavatory <NUM> connected to a row <NUM> of overhead stowage bin assemblies <NUM> (such as the stowage bin assemblies <NUM> shown in <FIG>), according to an example of the present disclosure. The lavatory <NUM> may be the lavatory systems <NUM>, as described herein. For example, the lavatory <NUM> may be the second lavatory unit <NUM>, as shown in <FIG>. As another example, the lavatory <NUM> may be a single unit lavatory, whether or not part of the lavatory system <NUM> described herein.

A portion of the row <NUM> directly connects to the lavatory <NUM>, such as a fore or aft end of the lavatory <NUM>. For example, a stowage bin assembly <NUM> may directly connect to the lavatory <NUM>, such as at an upper portion <NUM> of the lavatory <NUM>. As another example, an end cap <NUM> of the row <NUM> connects a stowage bin assembly <NUM> to the lavatory <NUM>.

The end cap <NUM> and/or a stowage bin assembly <NUM> provides a storage compartment <NUM> that extends outwardly from an outer wall <NUM> of the lavatory <NUM>, such as at an upper overhead portion that is aligned with the stowage bin assemblies <NUM>. The storage compartment <NUM> defines an internal storage space <NUM> that connects to an interior chamber <NUM> of the lavatory <NUM>. One or more outer walls (including the outer wall <NUM>) defines the interior chamber <NUM>. The storage compartment <NUM> extends outwardly from one or more of the outer walls. That is, the storage compartment <NUM> is not within the interior chamber <NUM>. In this manner, the storage compartment <NUM> may replace one or more cabinets that would otherwise be within the lavatory <NUM>, thereby freeing up additional space within the lavatory <NUM>.

A moveable compartment or storage access door may be disposed between the storage compartment <NUM> and the interior chamber <NUM> of the lavatory <NUM>. The storage access door is moveable between an open position, in which the internal storage space <NUM> is opened to the interior chamber <NUM>, and a closed position, in which the internal storage space is closed to the interior chamber <NUM>. Various supplies, such as toilet papers, facial tissue, and the like, may be stored within the internal storage space <NUM>, instead of within the interior chamber <NUM> of the lavatory <NUM>.

As shown, the storage compartment <NUM> directly connects to the interior chamber <NUM> of the lavatory <NUM>, but is not within the interior chamber <NUM>. Instead, the storage compartment <NUM> may be part of the end cap <NUM> and/or a stowage bin assembly <NUM> outside of the interior chamber <NUM> of the lavatory <NUM>. The internal storage space <NUM> of the storage compartment <NUM> is accessible from within the interior chamber <NUM> of the lavatory <NUM>. By recessing cabinet space into the end cap <NUM> and/or an overhead stowage bin assembly <NUM>, more space (which may otherwise be occupied by one or more cabinets) is created within the interior chamber <NUM>. In general, the storage compartment <NUM> coupled to the lavatory <NUM> reduces a need for cabinet space within the lavatory <NUM>.

<FIG> illustrates a perspective view of the storage compartment <NUM> extending outwardly from the lavatory <NUM>, according to an example of the present disclosure. As noted, the storage compartment <NUM> may be at least part of an end cap coupled to a stowage bin assembly, or optionally at least part of a stowage bin assembly. An access opening <NUM> connects the internal storage space <NUM> of the storage compartment <NUM> to the interior chamber <NUM> of the lavatory <NUM>. The access opening <NUM> may be formed through a wall <NUM> of the lavatory <NUM>, such as a fore or aft wall.

A storage access door <NUM> is moveably coupled to the storage compartment <NUM> and/or the wall <NUM>. The storage access door <NUM> is moveable between an open position and a closed position. The storage access door <NUM> may pivot about one or more hinges, slides over one or more tracks, and/or the like between the open position and the closed position.

In at least one example, a lighting assembly <NUM> may be disposed within the storage compartment <NUM>. The lighting assembly <NUM> is configured to illuminate the interior storage space <NUM>. In at least one example, the lighting assembly <NUM> is operatively coupled to the storage access door <NUM>, such as through a switch <NUM>, for example. In this manner, the lighting assembly <NUM> may be activated to illuminate the interior storage space <NUM> when the storage access door <NUM> is opened, and deactivated when the storage access door <NUM> is closed.

The storage compartment <NUM> may be used with any of the examples described herein. For example, the storage compartment <NUM> may be connected to any of the lavatories or lavatory units described herein.

<FIG> illustrates a perspective internal view of a containment compartment <NUM> for a first lavatory <NUM> connected to a second lavatory <NUM>.

A lavatory system <NUM> includes the first lavatory <NUM>, the second lavatory <NUM>, and the containment compartment <NUM> that is common to (for example, shared by) the first lavatory <NUM> and the second lavatory <NUM>. The containment compartment <NUM> defines a containment chamber <NUM>. In at least one example, the first lavatory <NUM> is the first lavatory unit <NUM>, and the second lavatory <NUM> is the second lavatory <NUM>, as shown and described with respect to <FIG>, for example. Optionally, the first lavatory <NUM> and the second lavatory <NUM> may be other than the first lavatory <NUM> and the second lavatory unit <NUM>.

The first lavatory <NUM> is separated from the second lavatory <NUM> by a divider wall <NUM>. For example, the divider wall <NUM> may be the divider wall <NUM>, as shown and described with respect to <FIG>.

The first lavatory <NUM> includes a first housing <NUM> (such as a first cabinet) and the second lavatory <NUM> includes a second housing <NUM> (such as a second cabinet). The containment compartment <NUM> is common to both the first lavatory <NUM> and the second lavatory <NUM>. The containment compartment <NUM> extends through the divider wall <NUM>.

The containment compartment <NUM> includes a first interior end wall <NUM> that connects to a front wall <NUM>, a rear wall <NUM>, a base <NUM>, and an upper counter <NUM> that extend between (and/or form portions of) the first housing <NUM> and the second housing <NUM>. The front wall <NUM>, the rear wall, the base <NUM>, and the upper counter <NUM> connect to a second interior end wall <NUM> opposite from the first interior end wall <NUM>. The first interior end wall <NUM> is within the first lavatory <NUM>, and the second interior end wall <NUM> is within the second lavatory <NUM>. The first interior end wall <NUM> may be part of the first housing <NUM>, such as a first cabinet, and the second interior end wall <NUM> may be part of the second housing <NUM>, such as a second cabinet.

The first interior end wall <NUM>, the front wall <NUM>, the rear wall <NUM>, the base <NUM>, the upper counter <NUM> (which extends through the divider wall <NUM>), and the second interior end wall <NUM> define the containment chamber <NUM> of the containment compartment <NUM>. The containment compartment <NUM> is common to the first lavatory <NUM> and the second lavatory <NUM>. The containment compartment <NUM> is shared by both the first lavatory <NUM> and the second lavatory <NUM>.

A trash container <NUM> is configured to be stored within the containment compartment <NUM>. An access door <NUM> is coupled to the front wall <NUM>, such as within the first lavatory <NUM>. For example, the access door <NUM> is moveably coupled to the front wall <NUM> within first lavatory <NUM> (or optionally the second lavatory <NUM>). The access door <NUM> is moveably coupled to the front wall <NUM>, such as through one or more hinges, slides and tracks, and/or the like. As such, the access door <NUM> is configured to pivotally or slidably move between an open position, in which the containment chamber <NUM> of the containment compartment <NUM> is exposed, and a closed position, in which the containment chamber <NUM> of the containment compartment <NUM> is closed. When the access door <NUM> is in the open position, the trash container <NUM> may be selectively removed and repositioned.

A first trash opening <NUM> having a moveable lid <NUM> is formed in the upper counter <NUM> within the first lavatory <NUM>. A second trash opening <NUM> having a moveable lid <NUM> is formed in the upper counter <NUM> within the second lavatory <NUM>. The first trash opening <NUM> and the second trash opening <NUM> both lead to the containment chamber <NUM> of the containment compartment <NUM>, which is common to both the first lavatory <NUM> and the second lavatory <NUM>. In this manner, trash disposed within both the first lavatory <NUM> and the second lavatory <NUM> may be discarded through the respective first trash opening <NUM> and the second trash opening <NUM> into the trash container <NUM>, which is disposed within the containment chamber <NUM> of the containment compartment <NUM>.

In at least one example, the containment compartment <NUM> may be configured to contain a fire therein. For example, interior wall portions that define the containment compartment <NUM> may be formed of fire retardant materials, and joints between the walls and the access door <NUM> in the closed position may sealingly engage one another to limit a flow of oxygen into the containment compartment <NUM> when the access door <NUM> is closed. Further, the containment compartment <NUM> may retain a fire suppression device <NUM>, such as a fire extinguisher, that is shared by the first lavatory <NUM> and the second lavatory <NUM>.

The containment compartment <NUM> retains the trash container <NUM>, which is used by both the first lavatory <NUM> and the second lavatory <NUM>, thereby economizing space for both the first lavatory <NUM> and the second lavatory <NUM>. In this manner, additional space is provided for both the neighboring first lavatory <NUM> and the second lavatory <NUM>. The containment compartment <NUM> provides access to the single trash container <NUM> from separate, but neighboring lavatories <NUM> and <NUM>, which are separated by the divider wall <NUM>.

The containment compartment <NUM> may be used with any of the examples described herein. For example, the containment compartment <NUM> may be used with respect to any neighboring lavatories or lavatory units, as described herein.

<FIG> illustrates a simplified front view of the containment compartment <NUM> common to the first lavatory <NUM> and the second lavatory <NUM>.

The containment compartment <NUM> extends through the divider wall <NUM> so that a first portion 300a of the containment compartment 300a is within the first lavatory <NUM>, and a second portion 300b of the containment compartment 300b is within the second lavatory <NUM>.

In at least one example, a first container portion 330a of the trash container <NUM> is underneath the first trash opening <NUM>, and a second container portion 330b of the trash container <NUM> is underneath the second trash opening <NUM>. As such, trash passed into and through the first trash opening <NUM> and the second trash opening <NUM> is received within a containing chamber <NUM> of the trash container <NUM>.

The trash container <NUM> may not be positioned directly below the first trash opening <NUM> and/or the second trash opening <NUM>. As such, a first trash duct <NUM> may be connected to the first trash opening <NUM>, and a second trash duct <NUM> may be connected to the second trash opening <NUM>. The first trash duct <NUM> and the second trash duct <NUM> lead to containing chamber <NUM> of the trash container <NUM>.

<FIG> illustrates a flow chart of a method <NUM> of forming a lavatory system within an internal cabin of a vehicle. The method <NUM> includes providing, at <NUM>, an enclosure defining an interior chamber; forming, at <NUM>, a first lavatory unit within the interior chamber, and forming, at <NUM>, a second lavatory within the interior chamber. The first lavatory unit is adjacent to the second lavatory unit.

In at least one example, said forming <NUM> the second lavatory incudes providing a portion of an outboard wall of the internal cabin as an outboard wall of the second lavatory.

In at least one example, said forming <NUM> the first lavatory unit includes connecting a first passage of the first lavatory unit to an aisle of the internal cabin, and said forming <NUM> the second lavatory unit includes connecting a second passage of the second lavatory unit to an egress path of the internal cabin.

The method includes providing a divider wall within the interior chamber, and separating the first lavatory unit from the second lavatory unit with the divider wall. The method includes moving the divider wall between a closed position that separates the interior chamber into the first lavatory unit and the second lavatory unit, and an open position, in which the interior chamber provides an enlarged, expanded single lavatory space.

The method includes moveably coupling a barrier to one of the first lavatory unit or the second lavatory unit, and moving the barrier is between an extended position and a retracted position. The barrier in the extended position is disposed in front of an exit door of the vehicle. The exit door is visible within the internal cabin when the barrier is in the retracted position.

Optionally, the method includes providing, at <NUM>, a storage compartment that extends outwardly from an outer wall of one or both of the first lavatory unit or the second lavatory unit. The storage compartment defines an internal storage space that connects to the interior chamber. As another option, the method includes <NUM> in relation to lavatory system, a lavatory, or lavatory unit, and not steps <NUM>-<NUM>.

The method includes providing, at <NUM>, a containment compartment that is common to the first lavatory unit and the second lavatory unit. As another option, the method includes <NUM> in relation to a lavatory system, a lavatory, or lavatory unit, and not steps <NUM>-<NUM>. As another option, the method includes steps <NUM> and <NUM>, but not steps <NUM>-<NUM>.

<FIG> illustrates a flow chart of a method <NUM> of forming a lavatory within an internal cabin of a vehicle. The method <NUM> includes defining, at <NUM>, an interior chamber of the lavatory by one or more outer walls; extending, at <NUM>, a storage compartment outwardly from at least one of the outer walls; and connecting, at <NUM>, an internal storage space of the storage compartment to the interior chamber.

In at least one example, the method includes forming at least a portion of a stowage bin assembly as the storage compartment. As another example, the method includes forming at least a portion of an end cap connected to a stowage bin assembly as the storage compartment.

In at least one example, the method includes disposing a storage access door disposed between the storage compartment and the interior chamber; and moving the storage access door moved between an open position and a closed position. The internal storage space is opened to the interior chamber when the storage access door is in the open position. The internal storage space is closed to the interior chamber when the storage access door is in the closed position.

In at least one example, said extending includes directly connecting the storage compartment to the interior chamber. The storage compartment is not within the interior chamber.

As an example, the method includes forming an access opening through the one or more outer walls, and connecting the internal storage space to the interior chamber through the access opening.

In at least one example, the method includes providing a lighting assembly within the internal storage space of the storage compartment. As a further example, the method includes operatively coupling the lighting assembly to a storage access door of the storage compartment; activating the lighting assembly to illuminate the interior storage space when the storage access door is opened; and deactivating the lighting assembly when the storage access door is closed.

<FIG> illustrates a block diagram of a method <NUM> of forming a lavatory system within an internal cabin of a vehicle. The method <NUM> includes providing, at <NUM>, a containment compartment common to a first lavatory unit and a second lavatory unit that is adjacent to the first lavatory unit.

The method includes extending the containment compartment through a divider wall that separates the first lavatory unit from the second lavatory unit.

In at least one example, the containment compartment includes a first interior end wall within the first lavatory unit, a front wall, a rear wall, a base, an upper counter, and a second interior end wall opposite from the first interior end wall. The second interior end wall is within the second lavatory unit. The first interior end wall, the front wall, the rear wall, the base, the upper counter, and the second interior end wall define a containment chamber of the containment compartment.

In at least one example, the method includes storing a trash container within the containment compartment.

As another example, the method includes providing an access door within one of the first lavatory unit or the second lavatory unit; and moving the access door between an open position and a closed position. The containment compartment is exposed when the access door is in the open position. The containment compartment is closed when the access door is in the closed position.

In at least one example, the method includes forming a first trash opening in the first lavatory unit. The first trash opening leads to a containment chamber of the containment compartment. The method also includes forming a second trash opening in the second lavatory unit. The second trash opening leads to the containment chamber of the containment compartment. As a further example, the method includes connecting a first trash duct to the first trash opening, and connecting a second trash duct to the second trash opening.

As an example, the method includes containing the first lavatory unit and the second lavatory unit within a single monument within the internal cabin.

As an example, the method includes disposing the first lavatory unit and the second lavatory unit side-to-side across a portion of the internal cabin.

Referring to <FIG>, as described herein, examples of the present disclosure provide lavatory units that occupy less space than known lavatories within an internal cabin of a vehicle. Further, examples of the present disclosure provide lavatory units that are readily and easily accessible by persons of limited mobility. Also, examples of the present disclosure provide multi-unit lavatory systems that do not reduce space for additional seating within an internal cabin of a vehicle.

It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above-described examples (and/or aspects thereof) can be used in combination with each other. In addition, many modifications can be made to adapt a particular situation or material to the teachings of the various examples of the disclosure without departing from their scope. While the dimensions and types of materials described herein are intended to define the parameters of the various examples of the disclosure, the examples are by no means limiting and are exemplary examples. Many other examples will be apparent to those of skill in the art upon reviewing the above description. The scope of the various examples of the disclosure should, therefore, be determined with reference to the appended claims.

In the appended claims and the detailed description herein, the terms "including" and "in which" are used as the plain-English equivalents of the respective terms "comprising" and "wherein. " Moreover, the terms "first," "second," and "third," etc. are used merely as labels, and are not intended to impose numerical requirements on their objects.

Claim 1:
A vehicle including an internal cabin and a lavatory system (<NUM>) within the internal cabin (<NUM>, <NUM>), the lavatory system (<NUM>) comprising:
an enclosure (<NUM>) defining an interior chamber (<NUM>);
a first lavatory unit (<NUM>, <NUM>) within the interior chamber (<NUM>);
a second lavatory unit (<NUM>, <NUM>) within the interior chamber (<NUM>), wherein the second lavatory unit (<NUM>, <NUM>) is adjacent to the first lavatory unit (<NUM>, <NUM>); and
a containment compartment (<NUM>) common to the first lavatory unit (<NUM>, <NUM>) and the second lavatory unit (<NUM>, <NUM>),
wherein the containment compartment extends through a divider wall (<NUM>, <NUM>) that separates the first lavatory unit (<NUM>, <NUM>) from the second lavatory unit (<NUM>, <NUM>),
wherein the divider wall (<NUM>, <NUM>) is movable between a closed position that separates the interior chamber (<NUM>) into the first lavatory unit (<NUM>, <NUM>) and the second lavatory unit (<NUM>, <NUM>), and an open position, in which the interior chamber (<NUM>) provides an enlarged, expanded single lavatory space, and
a barrier (<NUM>) movably coupled to one of the first lavatory unit (<NUM>, <NUM>) or the second lavatory unit (<NUM>, <NUM>), wherein the barrier (<NUM>) is movable between an extended position, in which the barrier (<NUM>) is disposed in front of an exit door (<NUM>) of the vehicle, and a retracted position, in which the exit door (<NUM>) is visible within the internal cabin (<NUM>, <NUM>).