A vehicle seat is provided herein. The vehicle seat includes a cushion disposed within a seating member having at least one inflatable first bladder for selectively adjusting the firmness of the cushion. An inflatable second bladder is separated from a support surface of the seating member by the first bladder and fluidly connected to the first bladder. A vehicle seat hip pivot point is maintained when adjusting the firmness of the cushion by increasing the pressure in the second bladder when the pressure in the first bladder is selectively decreased, and by decreasing the pressure in the second bladder when the pressure in the first bladder is selectively increased.

A vehicle seat in accordance with the present disclosure includes a seat bottom and a seat back. The seat back is coupled to the seat bottom to move relative to the seat bottom. The seat bottom is coupled to a floor of a vehicle and configured to move relative to the seat back.

A seat back assembly and method of manufacture is provided. The seat back includes a foam cushion layer. A support sub-assembly is formed including a rigid support layer with a plurality of cavities and channels defined on a rear surface for receiving components and a generally smooth front surface. At least one component is retained in one of the cavities and a second component is secured on the front surface of the support layer. A trim material covers the cushion layer and secures the sub-assembly to the seat back.

A thoracic support for a seatback of a seat is provided. The thoracic support includes a center portion extending in an upright direction and adapted to be positioned adjacent the seatback to align adjacent a thoracic region a user's spine. The center portion is formed of a first foam material having a first hardness. A pair of side portions each disposed adjacent to and are connected with the center portion. The side portions are formed of a second foam material having a second hardness. The first hardness is greater than the second hardness so that the center portion provides support to at least a portion of the thoracic region of the user's spine.

A vehicle seat includes a lower seating structure and a raised seatback support, wherein one of either the lower seating structure or raised seatback support consists of a multilayer assembly. The multilayer assembly includes a flexible static layer, a flexible dynamic layer having an adjustable firmness, a suspension layer formed from tunable springs which support a flexible panel, and a frame supported carrier including a protective recess within which the suspension layer is cradled.

To provide a vehicle seat with a function of reducing fatigue regardless of the physique of the seated person, a vehicle seat includes: an ischial tuberosity support device that is driven to change a position of a part of a seat cushion corresponding to ischial tuberosities of a seated person; a sacrum/ilium support device that is driven to change a position of a part of a seat back corresponding to the sacrum and ilia of the seated person; a ninth thoracic vertebra support device that is driven to change a position of a part of the seat back corresponding to a ninth thoracic vertebra of the seated person; and a control device, wherein the control device sequentially executes: an information acquisition step of acquiring physique information of the seated person; a decision step of deciding parameters regarding a driving amount of each of the ischial tuberosity support device, the sacrum/ilium support device, and the ninth thoracic vertebra support device based on the acquired physique information; and an output step of driving the ischial tuberosity support device, the sacrum/ilium support device, and the ninth thoracic vertebra support device based on the corresponding parameters.

A pressure medium distributor, for a pneumatic adjustment arrangement of a vehicle seat. The pressure medium distributor has a distribution element including at least one first and one second film connected to each other along a connection seam in order to form a first and at least one second pressure medium chamber. The pressure medium distributor has a first pressure medium inlet line to admit the pressure medium into the first pressure medium chamber, and at least one second pressure medium inlet line to admit the pressure medium into the at least one second pressure medium chamber, At least one first pressure medium outlet line is provided for discharge of the pressure medium from the first pressure medium chamber, and at least one second pressure medium outlet line is provided for discharge of the pressure medium from the second pressure medium chamber creating a pressure medium distributor which is flexible.

A seatback support shell for a vehicle seat includes a shaped resinous sheet defining a top side, a bottom side, a first lateral side, and a second lateral side when the seatback support shell is positioned in a vehicle seat. The shaped resinous sheet has a convex section and a non-convex section with the convex section being positioned below the non-convex section when the seatback support shell is positioned in a vehicle seat.

Armrest device for utility vehicle seats, wherein the armrest device has a plurality of first control elements and at least one second control element, wherein by means of selecting and actuating one of the first control elements which is arranged on an upper surface of the armrest device, seen in a height direction, a vehicle function can be assigned to the selected first control element and by means of actuating the second control element, which is arranged on a side surface of the armrest device and is connected at least by means of a signal to the selected first control element, the vehicle function is adjustable.

A system and method that comprises a plurality of inflatable tubes is provided. The plurality of inflatable tubes comprises a first tube set and a second tube set. The plurality of inflatable tubes is configured to provide a pressure distribution to an object supported by the plurality of inflatable tubes. The first tube set is configured to be inflated and deflated at a predetermined time interval to shift the pressure distribution.