Patent ID: 8678500

Claim:
A vehicle seat ( 25 ) comprising: a seat frame ( 29 ); a seat surface ( 31 ); at least one deformation element including a fluid-filled cushion and being in communication with the seat frame ( 29 ) and the seat surface ( 31 ); a fluid control unit in communication with the at least one deformation element, the fluid control unit including at least one of a motor-driven fluid cylinder and a pressurized fluid reservoir; and at least one of a pressure sensor and an acceleration sensor in communication with the at least one deformation element, wherein the fluid control unit effects a change of fluid pressure within the fluid filled cushion upon receipt of an input from the at least one sensor, wherein the fluid control unit further includes a control algorithm, which is P dyn (t)=P cushion (t)−P stat , P stat being a static pressure inside of the fluid-filled cushion, P cushion (t) being a pressure inside of the fluid-filled cushion at time t and measurable by the pressure sensor, P dyn (t) being a pressure inside of the fluid-filled cushion attributable to a change in motion detected by the acceleration sensor.