An embodiment is a seat height gear system including a monopost apparatus configured to be mounted under a seat, the monopost apparatus comprising a lower post and an upper post, and a direct drive motor apparatus within the monopost apparatus, the direct drive motor apparatus including a motor and a gear unit, the gear unit including a pinion and a rack bar, the rack bar being configured to be engaged with the pinion, the motor being fixed to the lower post of the monopost apparatus, the pinion being coupled to the motor, the rack bar being fixed to an upper post of the monopost apparatus, the motor being configured to rotate the pinion, and the rack bar being configured to convert the rotation of the pinion into the linear motion.

A tracking base assembly for an aircraft seat includes base rails mounted to floor tracks in an aircraft cabin by floor track fittings in fixed positions, the base rails connected by a tracking member for providing longitudinal tracking while minimizing added height. The base rails include tracking slots extending longitudinally, and the tracking member includes tracking elements translatable forward and backward along the tracking slots, allowing an aircraft seat mounted to the tracking member to translate forward from a retracted configuration into an extended or berthing configuration (and backward to the retracted configuration). The tracking member includes a locking mechanism for locking the tracking member and seat in intermediate positions within the tracking slots. The tracking slots may be oriented slightly downward from the horizontal to allow for gravity-assisted tracking or to counteract the nose-up flight angles associated with cruising altitude, providing for easier seat tracking.

A vehicle seat, includes a guide describing a trajectory, said vehicle seat being movable on the guide along the trajectory so that the vehicle seat is moved away from a vehicle center, and a front side of the vehicle seat is rotated about a vertical axis of the vehicle seat toward the vehicle center.

A slide rail is configured to have a specified front-upward slant angle within a range of 9-11 degrees relative to a floor panel such that a seat slides longitudinally with the specified front-upward slant angle and adjustably over a specified longitudinal range along the slide rail, a thigh support portion is provided at a front end portion of a seat cushion so as to swing vertically around its rear portion with an adjustable swing-angle range of 4 degrees or greater, and a seat device of a vehicle does not comprise any other lift mechanism for adjusting a height of the seat than the slide rail having the specified front-upward slant angle.

A longitudinal adjustment device for a motor vehicle seat has two pairs of rails. It includes a locking device for each pair of rails. It has a common actuating unit for the two locking devices, the unit interacting with both locking devices and includes a handle. The actuating unit has an electric drive motor, a gearbox which is connected to the electric drive motor, an actuator and preferably a setting unit.

A track assembly comprising a first track having a curved configuration; a second track slidably connected to the first track; a seat assembly connected to move with the second track, the seat assembly comprising a seat base and a seat back adjustable to a plurality of seat positions relative to the second track; a lock configured to selectively lock the first track and the second track; and a release lever configured to automatically actuate the lock.

A seat sliding device includes a lever member, a lock member, a rear biasing member, an operation member, and a front biasing member. A cylindrical portion of the operation member is inserted inside the lever member. At a front end of the front biasing member inserted into the cylindrical portion of the operation member, a retaining portion and a release portion are formed, the retaining portion preventing the operation member from moving forward, and the release portion extending forward from the retaining portion. A through-hole that penetrates into an interior of the cylindrical portion of the operation member is formed in an upper surface or a lower surface of a part that is forward of a part inserted into the lever member, of the cylindrical portion of the operation member at a position facing the release portion or at a position on a front side from the release portion.

A vehicle seat base, also known as a console, movably attaches a vehicle seat on a vehicle interior floor. The vehicle seat is movably arranged parallel to the vehicle longitudinal direction and parallel to the vehicle lateral direction via a first rail assembly running parallel to the vehicle longitudinal direction and a second rail assembly running parallel to the vehicle lateral direction. The vehicle interior floor has a step running in the vehicle lateral direction that divides the floor in the vehicle longitudinal direction into a first floor region lying at a lower height and a second floor region lying at a higher height, and the floor is constricted by wheel housings that penetrate into the floor from the respective exterior, behind the vehicle seat. The second rail assembly ascends towards the vertical vehicle longitudinal central plane from the vehicle exterior running parallel to the vehicle longitudinal direction.