An occupant support adapted for use in a vehicle includes a seat frame, a seat pad, and a suspension system. The seat frame is adapted to couple with the vehicle for movement with the vehicle. The seat pad is adapted to provide a comfortable support interface. The suspension system provides relative movement between the seat pad and the seat frame.

This invention is a seat with an adjustable back and/or an adjustable base. The adjustable back and/or base can be adjusted in response to rough terrain or water encountered by a vehicle in which the seat is located.

An occupant support adapted for use in a vehicle includes a seat frame, a seat pad, and a suspension system. The seat frame is adapted to couple with the vehicle for movement with the vehicle. The seat pad is adapted to provide a comfortable support interface. The suspension system provides relative movement between the seat pad and the seat frame.

A height adjusting mechanism (100) is provided for a vehicle seat (1), in particular for a utility vehicle seat, including a scissors-type frame (3). The height adjusting mechanism (100) includes a gas spring (12) that cooperates with the scissors-type frame (3) as well as a valve device (40) for ventilating and/or evacuating the gas spring (12). The valve device (40) is located on a control unit (110). The control unit (110) includes a control element (82) for actuating the height adjusting mechanism (100). A vehicle seat (1) is also provided including a height adjusting mechanism (100).

A pneumatic seat support by itself supports a seat above a floor of a vehicle. The pneumatic seat support has upper and lower air chambers. The lower air chamber is a rigid cylindrical tube. The upper air chamber is a flexible cylindrical bellows, with a diameter greater than the diameter of the tube. Three or more linear shafts extending through the upper air chamber and into the lower air chamber provide a single-degree-of-freedom bearing support structure that allows vertical motion of the seat but withstands horizontal loads on the seat. When the seat moves vertically downward, it compresses air in both chambers, providing a seat support system with a natural oscillation frequency which is less than 2.4 Hz, and preferably in the range of 1.5-2.2 Hz.

A vehicle seat assembly includes a housing seat attachment portion with hooks in receipt of suspension wires. A housing bracket extends from a housing sidewall to provide a housing cavity and a housing opening. The housing bracket is spaced above the vehicle floor by at least fifty millimeters to provide clearance between the housing bracket and the vehicle floor. A pump is received within the housing cavity adjacent to the seat attachment portion. A cover is fastened to the housing seat attachment portion and the housing bracket to at least partially enclose the housing opening and to retain the pump within the housing. A light source is received within the housing cavity and is adjacent to the seat attachment portion to minimize a height of the housing. The light source is oriented away from the seat attachment portion to illuminate a region beneath the seat bottom frame.

An occupant support includes a seat coupled to a seat base. The seat includes a seat bottom and a seat back. The seat back is coupled to the seat bottom to extend upwardly away from the seat bottom. Motion-sickness mitigation means facilitates relative movement between a support surface of the seat and the seat base.

A control system and method for the seat suspension described herein utilizes a pneumatic cylinder which forms the shock absorber, an air compressor, solenoid valve and a microelectromechanical system (MEMS) based control. In operation, the pneumatic cylinder is filled with a compressible gas and sustained under pressure for the purpose of supporting the static weight of the occupant as well as providing comfort by reducing transmitted vibrations and high acceleration from external disturbances. A control process utilizes vibration data from the MEMS to adjust the gas cylinder pressure accordingly to reduce and damp the undulations of the supported mass.

The invention relates to a vehicle seat comprising a backrest portion and a seating surface portion, each of which is arranged to be connected with a seat base portion, wherein the backrest portion is resiliently arranged and supported to be able to swivel with respect to the seat base portion, and wherein the seating surface portion is arranged to be able to move in at least a longitudinal direction of the seat frontwards and rearwards with respect to the seat base portion, wherein the backrest portion and the seating surface portion are operatively connected together via a first lever arrangement in such a way that the seating surface portion is able to move rearwards in the longitudinal direction of the seat when the backrest portion makes a suspending movement with respect to the seat base portion in a direction away from the seating surface portion.

An assembly includes a seat bottom, a rear bladder, a front bladder, and a check valve. The seat bottom includes a rear seat cushion and a front seat cushion in a seat-forward direction from the rear seat cushion. At least one of the rear seat cushion or the front seat cushion is vertically movable relative to the other one of the rear seat cushion or the front seat cushion. The rear bladder supports the rear seat cushion. The front bladder supports the front seat cushion. The check valve fluidly connects the front bladder and the rear bladder. The check valve is oriented to permit fluid to pass from the rear bladder to the front bladder and block fluid from passing from the front bladder to the rear bladder.