The present invention relates generally to mobile platforms, and more particularly (but not exclusively) to apparatus and methods for increasing useable space within aircraft lavatories.
Airlines are continually striving to meet passenger demand for improved lavatory comforts including demands for more room for changing clothes, changing diapers, and refreshing themselves within lavatories. It is this customer demand that is driving airlines to increase the size of lavatories while competing with other airlines to attract customers.
However, increasing lavatory footprints normally decreases available revenue generating space on the aircraft. For at least this reason, airlines are asking manufacturers to improve lavatory features and comforts without decreasing revenue generating space.
The present invention relates to apparatus and methods for increasing useable space within a mobile platform compartment, such as an aircraft lavatory, which is adjacent a predetermined area of the mobile platform, such as an aircraft passenger doorway area. The apparatus generally includes a turntable module rotatably coupled to supporting structure within the mobile platform. The turntable module can be rotated to a first angular position in which the turntable module is substantially within the compartment but outside the predetermined area. The turntable module can also be rotated to a second angular position in which the turntable module is substantially within the predetermined area but outside the compartment. The turntable module supports at least one item, such as a lavatory sink, which is accessible from within the compartment when the turntable module is in the second angular position.
In another form, the invention provides methods for increasing useable space within a mobile platform compartment, such as an aircraft lavatory, adjacent a predetermined area of the mobile platform, such as an aircraft passenger doorway area. The method generally includes rotatably coupling a turntable module to supporting structure within the mobile platform such that the turntable module is rotatable to a first angular position in which the turntable module is substantially within the compartment and outside the predetermined area and to a second angular position in which the turntable module is substantially within the predetermined area and outside the compartment; and supporting at least one item with the turntable module such that the item is accessible from within the compartment when the turntable module is in the second angular position.
The features, functions, and advantages can be achieved independently in various embodiments of the present inventions or may be combined in yet other embodiments.
The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
According to one aspect, the invention provides an apparatus for increasing useable space within a mobile platform compartment (e.g., lavatory, galley, etc.) adjacent a predetermined area of the mobile platform. In one embodiment, the apparatus generally includes a turntable module rotatably coupled to supporting structure within the mobile platform. The turntable module can be rotated to a first angular position in which the turntable module is substantially within the compartment but outside the predetermined area. The turntable module can also be rotated to a second angular position in which the turntable module is substantially within the predetermined area but outside the compartment. The turntable module supports at least one item (e.g., sink, appliance, etc.) which is accessible from within the compartment when the turntable module is in the second angular position.
When used onboard an aircraft, the turntable module can be rotated into an aircraft's emergency doorway space during cruise to increase the useable space of an aircraft compartment, such as a lavatory. The Federal Aviation Administration requires emergency doorway spaces to be clear of obstruction during taxi, takeoff, and landing phases of the aircraft for the emergency exit and attendant assist purposes. However, while the aircraft is cruising, the emergency doorway spaces can be intruded as long as the intrusion is non-permanent, such as is the case for the turntable module. Further, the emergency doorway spaces are largely unused during cruise and are normally used only for entry and departure from the aircraft while on the ground. Typically, the emergency doorway spaces (i.e., aisle width) are parallel to the doorway and have dimensions dependent upon the type of doorway.
Both lavatories 110 and 120 include conventional doors 124 and 126, respectively, for entry therein and are disposed adjacent a doorway entry area 128 of the aircraft. As used herein, the terms outboard, inboard, fore and aft have the meanings ordinarily attributed to these words in an aircraft.
The fixed subassembly 230 includes four sidewalls 232, 234, 236, and 238. The subassembly 230 also includes a floor pan 240 and a ceiling (not shown). A toilet 242 is affixed to the floor pan 240. The wall 234 can include an opening 243 for receiving an amenities console above the toilet 242. The amenities console may contain toilet seat covers, facial tissues, air sick bags, sanitary napkins, among other things.
The stationary subassembly 230 is essentially a box-shaped structure configured to coincide with an interior contour of the aircraft in which the lavatory 210 will be installed. The dimensions of the lavatory 210 can vary and will depend, at least in part, on the particular aircraft in which the lavatory and turntable module will be employed.
The fixed subassembly 230 is attached to suitable aircraft structure (not shown) adjacent a doorway entry or aisle. It will be appreciated that the subassembly 230 and thus the lavatory 210 may be repositioned in a direction opposite to that shown.
In the illustrated embodiment, the turntable module 212 includes a semi-circular rotational cylinder. The turntable module 212 supports a sink 214 and accommodates at least a portion of a plumbing system (described below and shown in
As shown in
The turntable module 212 is rotatably mounted to the fixed subassembly 230 proximate the wall 232 such that the turntable module 212 is rotatable about an generally central longitudinal axis through point 250. This mounting arrangement allows the turntable module 212 to be rotated to the “lavatory-in-use” configuration (
To prevent inadvertent rotation of the turntable module 212, for example, during a turbulent flight, a suitable locking mechanism (e.g., latches, etc.) can be provided. When in its locked position, the locking mechanism prevents rotation of the turntable module 212 from its present configuration, e.g., the “lavatory-in-use” or “lavatory-unavailable” configurations.
In an exemplary embodiment, cabinet magnets can be used to secure the turntable module in its present configuration, e.g., the “lavatory-in-use” or “lavatory-unavailable” configurations. The cabinet magnets can be installed on a bottom portion of the turntable striking face plates, which, in turn, can be located on an interior portion of a lavatory sidewall. Alternatively, the cabinet magnets can be replaced with electromagnets that have holding forces well in excess of hundreds of pounds. The electromagnets could be operated by a remote switch, preferably discretely located, for use by authorized personnel only.
Preferably, a partition or cover member is provided which can be used to close off the turntable module 212 during at least the taxi, takeoff, and landing phases of the aircraft. In the illustrated embodiment, the partition includes a sliding door 252 coupled to aircraft structure, although other partitions can be used including hinged doors and curtains.
In the illustrated embodiment, the turntable module 212 is sized and positioned relative to the sidewall 232 such that an optional flight attendant seat 254 can be mounted to the sidewall 232 adjacent the turntable module 212.
All of these dimensions, however, are exemplary only, and the specific size and dimensions of the turntable module required will depend in large part on the specific type of aircraft or other mobile platform in which the turntable module is installed, as well as the specific configuration of the part being formed. Preferably, the dimensional size of the turntable module is optimized to provide the largest, functional turntable module within the existing parameters of the lavatory in which the turntable module is to be installed. Further, the items supported and accommodated by the turntable module and the compartment in which it will be employed will also vary depending on the requirements of the particular aircraft or other mobile platform.
In a preferred embodiment, a friction dampening device is used to dampen the speed of the revolutions of the turntable module. Alternatively, other suitable systems can also be employed to dampen the rotational speed of the turntable module, such as the systems used in commercial revolving doors which include a reservoir of oil to dampen the speed of the revolutions, along with ordinary shafts and pivots.
As shown in
Existing outboard airplane lavatory designs typically run plumbing lines through the outboard lavatory panel adjacent to the sidewall of the airplane. Some airplane lavatories run plumbing lines through the ceiling and floor of the lavatory. Without requiring any significant changes, embodiments of the present invention can utilize the existing plumbing lines coming from the outboard panel. In the exemplary embodiment of
In a preferred embodiment, a friction dampening device is used to dampen the speed of the revolutions of the turntable module. Alternatively, other suitable systems can also be employed to dampen the rotational speed of the turntable module, such as the systems used in commercial revolving doors which include a reservoir of oil to dampen the speed of the revolutions, along with ordinary shafts and pivots.
In some embodiments, an actuation system (not shown) may also be provided to enable automatic rotation of the turntable module so long as the actuation system does not compromise the safety and reliability of the system. The actuator system can include a motor that drives a gear coupled to the turntable module.
Closeouts can also be employed for sealing light and water from penetrating into unwanted areas.
In operation, the lavatory 210 and turntable module 212 can be used as follows. When the aircraft is on the ground, taxiing, during takeoff, climbout and landing, the turntable module 212 is preferably in the stowed configuration shown in
After takeoff and climbout, an attendant may then unlock the turntable module 212 and rotate the turntable module 212 into the area or space proximate the doorway, as shown in
Access to the inside of the lavatory can be through a conventional door 124 (
The turntable module is preferably sized such that sufficient space remains in the area proximate the doorway for any needed egress even when the turntable module is in the “lavatory-in-use” configuration. In the event of an inflight emergency or during landing preparations, an attendant ordinarily would unlock the turntable module and rotate it back into the lavatory footprint, thereby eliminating the turntable module's protrusion into the FAA doorway clearance requirement. The turntable module can then be relocked and the sink 214 closed off by the sliding door 252 (
Before rotating the turntable module 212 back into the lavatory footprint, a visual inspection of the interior of the lavatory 210 should be performed to ensure that the lavatory is unoccupied and free of blockage items. The turntable module 212 would ordinarily remain stowed during final approach and landing. After the aircraft has parked at the airport gate, crews could rotate the turntable module 212 to service the lavatory 210 and turntable module 212, as appropriate.
The fixed subassembly 630 includes four sidewalls 632, 634, 636, and 638. The subassembly 630 also includes a floor pan 640 and a ceiling 641. A toilet 642 is affixed to the floor pan 640. A door 624 is also provided for accessing the interior of the lavatory 610.
The turntable module 612 is disposed adjacent the sidewalls 632 and 634 and forms a corner of the lavatory 610. The turntable module 612 supports a sink basin 646 and a mirror 647. In other embodiments, the turntable module 612 can accommodate a cabinet and/or other lavatory items and amenities.
In
To allow drainage from the sink basin 746, a flexible conduit or hose 770 (e.g., a flex hose, etc.) is in communication with the drain (not shown) of the sink basin 746. The hose 770 has sufficient flexibility to accommodate rotation of the turntable module 712 between at least the “lavatory-in-use” position (
With further reference to
The drain line 772 is positioned within an electrical ring connector 774, which, in turn, is positioned within a bushing 776. As shown in
In another form, the invention provides methods for increasing useable space within a mobile platform compartment (e.g., aircraft lavatory, etc.) adjacent a predetermined area (e.g., passenger doorway area) of the mobile platform. In one embodiment, the method generally includes rotatably coupling a turntable module to supporting structure within the mobile platform such that the turntable module is rotatable to a first angular position in which the turntable module is substantially within the compartment and outside the predetermined area and to a second angular position in which the turntable module is substantially within the predetermined area and outside the compartment; and supporting at least one item (e.g., sink, etc.) with the turntable module such that the item is accessible from within the compartment when the turntable module is in the second angular position.
In various embodiments, the mobile platform can be an aircraft and the predetermined area can be a passenger doorway area of the aircraft. In which case, the method can further include rotating the turntable module to the first angular position in which the turntable module is substantially within the compartment and outside the passenger doorway area during taxi, takeoff, and landing phases of the aircraft; and rotating the turntable module to the second angular position in which the turntable module is substantially within the passenger doorway area and outside the compartment during cruise.
By converting emergency space required by the FAA during taxi, takeoff and landing into useable space during cruise, various embodiments of the invention increase useable space within aircraft lavatories without reducing revenue generating spaces. Further, the turntable module in various embodiments includes a curved architecture that allows it to be readily retrofit into existing aircraft and/or implemented into new aircraft designs. Various embodiments also rotatably mount the turntable module to aircraft supporting structure using a ball-bearing system, which is structurally reliable even when flexion occurs in the aircraft during flight.
The invention is applicable to a wide range of mobile platforms including commercial aircraft, private aircraft, buses, ships, trains, among other mobile platforms. Accordingly, the specific references to aircraft or mobile platform herein should not be construed as limiting the scope of the present invention to a specific type of aircraft or mobile platform.
Further, the invention can also include configurations suitable for use with other compartments on a mobile platform besides lavatories. For example, a turntable module could be implemented to increase the operating space of a galley by using the turntable module for stowage for food and/or to support food service items, such as microwaves, coffee machines, appliances, etc. The galley turntable module could, for example, be rotated into a doorway entry area when the galley is being occupied by attendants, therefore increasing space within the galley.
While various preferred embodiments have been described, those skilled in the art will recognize modifications or variations which might be made without departing from the inventive concept. The examples illustrate the invention and are not intended to limit it. Therefore, the description and claims should be interpreted liberally with only such limitation as is necessary in view of the pertinent prior art.