A separable multiple-piece frame assembly (100) for a passenger seat of a vehicle includes a first spreader portion (101) with an inner face, a second spreader portion (201) with an inner face, a plurality of attachments (11, 12, 13, 14, 15, 16) for releasably attaching the first spreader portion (101) and the second spreader portion (201), and an attached configuration. In the attached configuration, the inner face of the first spreader portion and the inner face of the second spreader portion are in contact with one another.

A step assembly installable in a structure such as a housing of an armrest assembly, the step assembly including a base attachable to the structure including a mounting plate having a low profile and a fixed receptacle to be received in the structure, a step plate pivotally attached along a first end to the base along a lower end of the receptacle, the step plate pivotable between a stowed position in which the step plate is housed within the fixed receptacle and a deployed position in which the step plate is outside of the fixed receptacle, the step plate having a first side for supporting a foot, and a release mechanism for releasing the step plate from the stowed position to the deployed position. The step plate deployed for use and concealed from view between uses.

A method for joining composite rods with tubular shape without expensive, machined connectors and without compromising the structural integrity of the composite rod includes internal and external collars applied to the ends of the composite rod and deformed via unidirectional compressive load applied by a clamp in the radial direction of the composite rod cross-section. The resulting plastic deformation of the metal collars and composite rod interlock those components to support both compressive and tensile loads. The deformed metal collars are easily joinable to other components via off-the-shelf hardware.

Example lie-flat passenger seat configurations for transportation are described. A non-elevated passenger seat includes a seat base and a seatback pivotably connected to the sliding bar. The seat base may be opened upwardly or downwardly. The seatback may be opened sideway such that a space originally used for seat base and seatback is converted to a passage accessible by the passenger. An elevated-height passenger seat also includes a seat base, a seatback pivotably connected to the seat base, and a hinge at an upper portion of the seatback. The elevated-height passenger seat may rotate upwardly around the hinge. When the elevated-height passenger seat rotates upwardly, the elevated-height passenger seat transitions from a seating position to an elevated position with the seat base and the seatback forming a flat bed such that the passenger can lie flat on the flat bed formed by the seat base and the seatback.

A seat arrangement for passenger transport, wherein the seat arrangement can be arranged on the vehicle by a fastening device. The seat arrangement is intended and suitable for providing a sitting position at standing height, wherein the seat arrangement comprises at least one frame element. The frame element is arranged on the fastening device by at least one mounting shaft, wherein the at least one frame element can be pivoted relative to the fastening device about a pivot axis extending along a width axis.

An aircraft seat includes infinitely adjustable, lateral tilt control within a specified range. The aircraft seat includes a stationary support, a tilting frame rotatably or translatably attached to the stationary base, and a tilt control mechanism to adjust the tilt within the defined range and positively lock the frame without back-driving. The tilt control mechanism may include a plurality of linkages connected to the stationary support and the tilting frame, and to each other via a threaded block; a threaded shaft adjusts the linkages and thereby adjust the tilt. Alternatively, the tilt control mechanism comprises a curved rack and a pinion. The threaded block and threaded shaft, or the rack and pinion define ACME threads to prevent back-driving.

A passenger seating assembly with an integrated cabin attendant seat (CAS) is disclosed. In embodiments, a CAS folds down from a monument mounted to the cabin floor via a combined track fitting that secures into the left-side or right-side track rail. A group of passenger seats (e.g., two to five) faces opposite the CAS monument and includes left-side and right-side leg assemblies mountable to the track rails via track fittings. One rear portion of a leg assembly attaches to the combined track fitting to integrate the passenger seats and CAS monument, eliminating unused space between the passenger seats and CAS monument.

A stowable seat assembly may comprise: a scissor assembly configured to operably couple to a cabin floor of an aircraft, the scissor assembly comprising a first set of links including a first bottom link, a second bottom link, a first top link, and a second top link, the first bottom link pivotably coupled to the second bottom link at a bottom link intersection, the first top link pivotably coupled to the second top link at a top link intersection; and a seat pivotably coupled to the second top link and slidingly coupled to the first top link, the seat configured to extract from a stowed position to a seat position in response to pulling the seat in a vertical direction.

An aircraft seat may include an upper aircraft seat assembly, a lower aircraft seat assembly, and a frame actuation assembly configured to actuate the upper aircraft seat assembly relative to the lower aircraft seat assembly. The lower aircraft seat assembly may include at least one spring coupled to a foundation with a sloped actuation surface configured to cause the upper aircraft seat assembly to be at a decreased height when in a bed position. The compressing of the at least one spring may be configured to counterbalance a load within the aircraft seat and generate a controlled actuation of the upper aircraft seat assembly from an upright position to the bed position. A return force provided by the at least one spring may assist the frame actuation assembly during actuation of the upper aircraft seat assembly from the decreased height of the bed position to the upright position.

A frame beam member may include a tubular volume. The tubular volume may include at least one wall with one or more undulations in a radial direction along a length of the tubular volume. The one or more undulations may be configured to allow the tubular volume to absorb energy of a load applied during a flight scenario through local bending of the one or more undulations. The one or more undulations may be configured to have a first curvature when unloaded, and may be configured to have a second curvature when the load is applied. The second curvature may be different than the first curvature. The frame beam member may be one of a plurality of frame beam members of the aircraft seat frame. The plurality of frame beam members may be configured to couple to a plurality of joints of the aircraft seat frame.