Abstract: Described are non-uniform tubes (104) for a furniture unit for an aircraft. The non-uniform tubes can include a first end (108), a second end (110), a wall (112), and a tube central axis (118). The second end may be opposite from the first end, and the wall can extend from the first end to the second end. The wall can include an inner surface and an outer surface in which the inner surface defines a cavity (120) extending from the first end to the second end. The non-uniform tubes can include a first portion (124) between the first end and the second end. The cavity can include a cavity central axis (122), and, in the first portion (124), the cavity central axis (122) may be offset from the tube central axis (118).

Abstract: Described are torque bearing assemblies for passenger seats. A torque bearing attachment (122, 222, 322, 422) includes an elongated body having a forward edge configured to mate with an aft end (140) of a seat bottom pan (120), and first and second side edges having attachment elements (136) for connecting the assembly with a passenger seat frame (108). The first and second side edges can be positioned orthogonal to the forward edge and at opposite ends of the elongated body with respect to each other.

Abstract: A passenger seat assembly can include a seat frame; a seat back supported by the seat frame, comprising a rearward surface, and moveable between a stowed position and a deployed position; and a monitor shroud positioned proximate to the rearward surface of the seat back and fixedly coupled to a stationary surface, wherein the monitor shroud remains stationary as the seat back moves between the stowed position and the deployed position, and the monitor shroud defines an opening that provides access to the rearward surface of the seat back.

Abstract: Described are armrests for positioning between passenger seats having a base component with a divider extending upward from an upper surface of the base component and at least one adjustable component movably coupled to the base component. In a retracted position, the adjustable component and divider are arranged to form a non-intrusive barrier between passengers' arms. In an extended position, the divider is arranged to form the non-intrusive barrier between passengers' arms, while the adjustable component is arranged to extend a width of the armrest.

Abstract: A system for securing a passenger seat to a track can include a fitting coupled with or forming a portion of the passenger seat; a shear plunger coupled with the fitting including a shear plunger body defining a shear plunger locking surface; a guide pin assembly that may include a guide pin movable along a lift axis between a retracted state and an extended state and a locking member extending laterally from the guide pin that may travel in response to a movement of the guide pin from the retracted state to the extended state and may engage the shear plunger locking surface in response to a rotation of the guide pin in the extended state; and a quick install tool operable to raise and twist the guide pin assembly such that the locking member is held in tension against the shear plunger locking surface.

Abstract: A structural shroud assembly for a passenger seat includes a structural shroud having a first end, a second end opposite from the first end, and a central cavity between the first end and the second end. An armrest pivot may be supported at the first end of the structural shroud. In some cases, the structural shroud may be an armrest. In other cases, the structural shroud is an upper spreader for the passenger seat configured to support a seat back of the passenger seat, and a lower spreader configured to receive at least one seat beam tube is attached to the upper spreader.

Abstract: Described is a frame component for a passenger seat assembly. The frame includes a tubular frame component having a first portion and a second portion. The bent portion bends the frame at a non-zero angle within a plane. The tubular frame component includes a variable inner diameter such that the first portion of the tubular frame component has a first wall thickness and the bent portion of the tubular frame component has a second wall thickness that is different from the first wall thickness.

Abstract: Described are tray tables for passenger seats having a first surface, a second surface opposite from the first surface, and at least one of a pocket, a control panel, or a table support. The pocket may be defined in one of the surfaces of a tray table and have a pocket surface that is recessed in the tray table relative to the second surface. The control panel may be embedded in one of the surfaces of a tray table and may control at least one piece of cabin equipment associated with a passenger seat having the tray table. The table support may be connected between opposing sides of a tray table to pivotably support the tray table on a seat back of a passenger seat having the tray table.

Abstract: A structural shroud for a passenger seat assembly includes a hollow body having a first end, a second end opposite from the first end, and a central cavity between the first end and the second end. In certain embodiments, the structural shroud may include a magnesium alloy and/or an aluminum alloy, and may be formed via casting, forging, and/or additive manufacturing, among others. In some embodiments, a base frame assembly for a passenger seat assembly includes a monolithic base frame having a first leg portion and a first tube portion integrally formed with the first leg portion.

Abstract: Described is a passenger seat assembly that may include a seat back including a rearward surface, a seat shroud positioned proximate to the rearward surface of the seat back and fixedly coupled to a seat frame, wherein the seat shroud remains stationary as the seat back moves between a stowed position and a deployed position, and at least one moveable shroud member coupled to the seat shroud at an attachment point and positioned proximate a rearward surface of the seat shroud, wherein a location of the attachment point is adjustable.

Abstract: Described are seat backs for passenger seats. The seat back includes a frame, and the frame includes an upper portion and a lower portion. The upper portion includes a top end of the seat back, and the lower portion is adjacent to the upper portion. A thickness of the upper portion of the frame may be less than a thickness of the lower portion of the frame.

Abstract: Described are base frame assemblies for a passenger seat having an elongated tube and a connector. The elongated tube may include an inner surface, an outer surface, and a connecting aperture extending from the inner surface to the outer surface. The connector may include a first end, a second end, a central opening extending from the first end to the second end, a first stopper at the first end, a second stopper proximate to the second end, a contact surface between the first stopper and the second stopper, and an adjustment slot defined as extending from the first end to the second end. The connector may be positioned within the connecting aperture such that a portion of the elongated tube contacts the contact surface between the first stopper and the second stopper that may together overlap a portion of the inner surface and outer surface of the elongated tube.

Abstract: Described are torque bearing assemblies for passenger seats. A torque bearing attachment (122, 222, 322, 422) includes an elongated body having a forward edge configured to mate with an aft end (140) of a seat bottom pan (120), and first and second side edges having attachment elements (136) for connecting the assembly with a passenger seat frame (108). The first and second side edges can be positioned orthogonal to the forward edge and at opposite ends of the elongated body with respect to each other.

Abstract: Described are aircraft seats having a seat bottom coupled to a seat back and a linkage mechanism for reclining the seat. The reclining mechanism includes an actuator coupled to a recline lock linkage The actuator is movable between positions and moves the recline lock linkage about a pivot point to facilitate movement of the seat between an upright position and a deployed position.

Abstract: A passenger seat assembly can include a seat frame; a seat back supported by the seat frame, comprising a rearward surface, and moveable between a stowed position and a deployed position; and a monitor shroud positioned proximate to the rearward surface of the seat back and fixedly coupled to a stationary surface, wherein the monitor shroud remains stationary as the seat back moves between the stowed position and the deployed position, and the monitor shroud defines an opening that provides access to the rearward surface of the seat back.

Abstract: Computational numerical analysis for passenger seating assemblies can be performed by generating a combined computer numerical simulation based on two or more partial numerical simulations of different assemblies and/or virtual passengers or anthropomorphic test dummies (ATDs). The partial numerical simulations may be run for a common, nonzero period of time, after which first simulation data from the first numerical simulation and second simulation data from the second numerical simulation can be captured and used for generating the combined numerical simulation. The combined numerical simulation can simulate a collision between the different assemblies and/or virtual ATDs by assembling the first and second partial simulation data such that the modeled assemblies collide in the combined computer numerical simulation. Any suitable number of combined numerical simulations in a variety of specific variations may be regenerated using the first and second partial simulation data.

Abstract: Described are passenger seat reclining systems having a seat pan; a seat back fixed with respect to the seat pan; and at least one spreader. Motion track segments of the spreader may cause a particular recline motion. For example, the motion track segments may cause the seat body to rotate about an axis adjacent to the headrest during transition from an upright position to a reclined position of the passenger seat. Additionally or alternatively, the motion track segments may be configured such that the seat pan translates down and forward when the passenger seat transitions from an upright position to a reclined position, and such that the seat back is constrained to undergo less than less than 3 inches (7.62 cm) of rearward translation in recline travel when the passenger seat transitions from the upright position to the reclined position.

Abstract: Described is a frame component for a passenger seat assembly. The frame includes a tubular frame component having a first portion and a second portion. The bent portion bends the frame at a non-zero angle within a plane. The tubular frame component includes a variable inner diameter such that the first portion of the tubular frame component has a first wall thickness and the bent portion of the tubular frame component has a second wall thickness that is different from the first wall thickness.

Abstract: A passenger seat includes a seat frame, a plurality of legs extending down from the seat frame where each of the plurality of legs includes an upper end attached to the seat frame and a lower end, and at least one tube attached to the lower end of at least one of the plurality of legs. The at least one tube includes at least two attachments to a floor structure. The at least one tube includes at least one bent portion.

Abstract: Described are passenger seat bottom assemblies that include a layered seat bottom assembly formed of a first face sheet, a lightweight core layer, and a second face sheet bonded together, preferably in a flat or substantially flat arrangement. The core layer can be a honeycomb structure, e.g. a metal or aluminum honeycomb, or a foam, that confers a high strength and stiffness to the seat bottom assembly with minimal forming and minimal weight.