A passenger seat for an aircraft has a fixed seat portion with a front facing toward a first direction of the aircraft. The fixed seat portion has a centerline spaced equally from opposed lateral sides of the fixed seat portion. A first engagement member extends upwardly from the front at the centerline to a first engagement end. A moveable seat portion is mounted onto the fixed seat portion and is displaceable relative thereto. The moveable seat portion has a second engagement member extending downwardly from a front of the moveable seat portion to a second engagement end. The second engagement member is displaceable with the moveable seat portion to position the second engagement end under the first engagement end in an engagement position such that the overlapping first and second engagement ends prevent the moveable seat portion from pitching in a second direction opposite to the first direction.

A passenger seat for an aircraft, including a bottom support configured to be connected to a floor of the aircraft, a seat pan frame, and a support structure interconnecting the seat pan frame to the bottom support, the support structure including a front support member pivotally connected to a front end of the seat pan frame, the front support member including a respective strut on each side of the seat pan frame, each respective stmt having a bottom end rigidly connected to the bottom support and an opposed top end located under the seat pan frame, the bottom end being inwardly, downwardly and rearwardly offset with respect to the top end.

A passenger seat includes a bottom support to be connected to the aircraft floor, a seat pan frame, and a support structure interconnecting the seat pan frame to the bottom support. A front support member defines a frontmost portion of the support structure, and has a top end connected to a front end of the seat pan frame and a bottom end connected to the bottom support. The front end of the seat pan frame is forwardly offset from a front end of the bottom support and the top end of the front support member is forwardly offset from its bottom end such that an empty space is defined across a width of the seat between the seat pan frame and the floor, forwardly of the support structure, forwardly of the bottom support, and rearwardly of a vertical plane aligned with the front end of the seat pan frame.

A passenger seat comprises a backrest, a seat element and a size increasing mechanism which is configured to convert a weight acting on the seat element when a user sits in the passenger seat into an increase in the depth of a seat pan of the seat element that can be used by the user from a rest-position depth to a to an operational-position depth.

An occupant support includes a vehicle seat. The vehicle seat includes a seat bottom and a seat back coupled to the seat bottom. The occupant support further includes a lift system coupled to the seat bottom and seat back.

A seat frame is disclosed for a height-adjustable and tiltable seat pan of a motor vehicle seat. The seat frame has two side rails, a first cross bar, a second cross bar, and a drive unit. The first cross bar is supported in the two side rails and the second cross bar serves to support the seat pan. The second cross bar is mounted so as to be rotatable about fixed first axis in the two side rails. The second cross bar is rotated by the drive unit. The drive unit has an actuating motor and an actuator that is displaceable via the actuating motor and connected to the second cross bar outside the first axis. The drive unit is mounted on the first cross bar and rotatable about a second axis of the first cross bar which is fixed in the two side rails.

A seat assembly forming a substantially horizontal plane for an exposed surface of each of a lower seat cushion and a seatback cushion of a seatback comprises a lifter mechanism for a rearward edge of the lower seat cushion. The lifter mechanism comprises a bracket pivotable about a transverse bar fixedly mounted to a frame assembly for a lower seat assembly, the bracket comprising a forward lever and a rearward lever; and a link pinned at a first end to the seatback and pinned at a second end to the rearward lever by a slot. The rearward edge of the lower seat cushion is initially raised by the forward lever upon the seatback pivoting to a predetermined reclined position and the rearward edge of the lower seat cushion is raised to the substantially horizontal plane upon the seatback pivoting to a fully reclined position.

A chair includes a seat and a back rest, both of which pivot about respective axes between first and second positions thereof about parallel axes of rotation. The seat's second position is inclined relative to a first seat plane defined by the seat's first position. The backrest's second position is essentially parallel to the first seat plane such that the chair switches between seating and support configurations. In the seating configuration, the seat and backrest are their respective first positions such that the chair accommodates a seated person. In the support configuration, the seat and backrest are in their respective second positions such that the chair accommodates a person's chest on the backrest's rear face.

A passenger seat for an aircraft has a fixed seat portion with a front facing toward a first direction of the aircraft. The fixed seat portion has a centerline spaced equally from opposed lateral sides of the fixed seat portion. A first engagement member extends upwardly from the front at the centerline to a first engagement end. A moveable seat portion is mounted onto the fixed seat portion and is displaceable relative thereto. The moveable seat portion has a second engagement member extending downwardly from a front of the moveable seat portion to a second engagement end. The second engagement member is displaceable with the moveable seat portion to position the second engagement end under the first engagement end in an engagement position such that the overlapping first and second engagement ends prevent the moveable seat portion from pitching in a second direction opposite to the first direction.

The disclosed embodiments relate to an aircraft having an in-flight leveling system for a seat onboard the aircraft that includes a swivel mechanism providing selective rotational movement of the a rear portion of the seat to compensate for an angle of inclination of the aircraft during flight. A locking mechanism is coupled to the swivel mechanism to retain the seat in a first position for use on the ground and a second position for use during flight. An actuator moves the locking mechanism between a locked condition and an unlocked condition permitting the seat to move between the first position to the second position enabling the seat to be substantially level when the aircraft is on the ground and during flight.