Disclosed is a gearing device for a seat including a first internally toothed gear, a second internally toothed gear, an externally toothed gear, and an eccentric member. The first internally toothed gear includes a rotation center axis. The second internally toothed gear has the rotation center axis in common with the first internally toothed gear and is rotatably supported by the first internally toothed gear. The externally toothed gear is arranged to an inner side of the first and the second internally toothed gear, to thereby mesh with the first and the second internally toothed gears. The eccentric member rotates the externally toothed gear such that a rotation center thereof follows a path around the rotation center axis, rotatably supports the externally toothed gear about the rotation center, and rotates about the rotation center axis in response to a rotational force being externally input thereto.

A motor vehicle seat with a lying function has a seat cushion, a backrest which is arranged on a first end region of the seat cushion, and a calf support which can be elongated and which is arranged on a second end region of the seat cushion. The calf support is provided with a lifting device for lifting two outer support panels out of a rest position and into a support position which protrudes beyond a support surface of the calf support.

A legrest for an aircraft passenger seat, comprising a device, wherein: the device has a housing; the housing has two housing halves; the two housing halves are pivotally connected to one another; the housing is designed such that a life jacket for an aircraft passenger can be stowed therein; a seat cover for the aircraft passenger seat can be provided on one housing half, so that the device forms part of the usage surface of the legrest; and the device can be provided on a main structure of the legrest.

Seat assemblies (200) including structural components (212, 222, 232) made of foam are described. A seat sub-assembly (210, 220, 230) can include a frame (214, 224, 234) and a foam support (212, 222, 232). The foam support (212, 222, 232) can be coupled to the frame (214, 224, 234) for receiving a load on the seat sub-assembly (210, 220, 230), dissipating at least half of the load, and dispersing the load through the frame (214, 224, 234).

An adjustable seat for a vehicle including a first seat section configured to support a lower leg portion of the passenger when the passenger is sitting facing the first direction and a second seat section configured to support an upper leg portion of the passenger when the passenger is sitting facing the first direction and a torso and head portion of the passenger when the passenger is sitting facing the second direction. The adjustable seat also comprising a third seat section configured to support the torso and head portion of the passenger when the passenger is sitting facing the first direction and the upper leg portion of the passenger when the passenger is sitting facing the second direction. The adjustable seat also comprising a fourth seat section configured to support the lower leg portion of the passenger when the passenger is sitting facing the second direction.

The present disclosure provides a vehicle seat having a legrest with a seat cushion function, which may mount a legrest on a back portion of a front seatback to be deployable such that a passenger seated on a rear seat may place and support a calf and a foot on the deployed legrest, and recline a front seatback forward to use the deployed legrest as a seat cushion on which the passenger may be seated while facing a passenger seated on the rear seat.

[Object] To inhibit leg rests from colliding with each other and to allow a leg rest of his/her own seat to operate even in the case where a power source failure or the like occurs. [Solving Means] A seat apparatus according to an embodiment of the present invention includes: a seat body; a control unit; and a setting means. The seat body includes a leg rest. The control unit includes a controller. The controller determines whether the seat body is in a first state in which the seat body does not face a front seat or a back seat of the seat body or a second state in which the seat body faces one of the front seat and the back seat. The controller enables, where the controller has determined that the seat body is in the first state, a tilt operation command for the leg rest to tilt forward, and invalidates, where the controller has determined that the seat body is in the second state, the tilt operation command. The setting means fixes the determination result by the controller to the first state.

A vehicle seat support comprising two rails extending in a longitudinal direction, a central module slidably mounted on the rails and suitable for supporting the vehicle seat, a footrest slidably mounted on the rails in front of the central module and suitable for receiving the feet of an occupant seated on the seat, a first actuation system able to cause the central module to slide along the rails, and a second actuation system able to cause the footrest to slide along the rails independently of the central module.

An arrangement structure for a biological sensor includes a biological sensor of a non-contact type provided in a seat on which a human is seated. The biological sensor detecting biological information of the human with electromagnetic waves. The biological sensor is arranged at a position in the seat avoiding a member that constitutes the seat and interferes with passage of the electromagnetic waves.

A reversible seat assembly for use with an airplane. The reversible seat comprises a base assembly and a vertical assembly. The base assembly and the vertical assembly are connected to a support structure and are collectively disposable into and out of a first travel position, a second travel position, and a third travel position. In the first and second travel positions a user or passenger may assume a usual sitting position. In the third travel position the user may assume a reverse sitting position. The base assembly comprises a right segment and a left segment connected and rotationally movable to a central segment. The vertical assembly comprises a lower segment and an upper segment connected to and rotationally movable a middle segment. The reversible seat assembly may further comprise a back armrest connected to an opposite side of said middle segment and structure to provide support to the arms of the user.