The present disclosure discusses an active seating system that includes a load leveling mechanism. The load leveling mechanism includes a force bias actuator assembly, a roll actuator assembly, a heave actuator assembly, a first torsion rod connected to the force bias actuator and the roll actuator, and a second torsion rod connected to the force bias actuator and the heave actuator. Each of the force bias actuator assembly, roll actuator assembly, and heave actuator assemblies comprises a housing, a DC motor disposed within the housing, and a ball screw with a driveshaft, the driveshaft of the ball screw being coaxial with a rotor of the DC motor. The active seating system also includes a seat top and an interface configured to mount the seat top to the load leveling mechanism.

An air suspension apparatus for vehicle seats includes an air shutter connected to a supply port of a control valve configured to supply air so as to adjust the opening degree of an inner air channel through which air supplied to the control valve passes.

A kinetic seat assembly includes primary seat cushion frame, a secondary seat cushion frame movable relative to the primary seat cushion frame, a primary seat back frame, and a secondary seat back frame movable relative to the primary seat back frame. In embodiments, the secondary seat back frame includes a power lumbar mechanism. In embodiments at least one of the secondary seat cushion frame and the secondary seat back frame includes at least one of a cooling mechanism and a heating mechanism.

A reclinable passenger seat includes a seat pan linear actuator having a rear end pivotally connected to the rear end of the seat pan frame, and a front end pivotally connected to the base by a third fixed pivot. A backrest linear actuator has an upper end pivotally connected to the upper backrest member, and a lower end pivotally connected to the base. A length of the backrest linear actuator is defined between the upper and lower ends. The backrest frame and seat pan frame are configured to move simultaneously between at least a reclined configuration and a berth configuration through pivoting motion about the first and second fixed pivots and about the first and second locations. The length of the backrest linear actuator is substantially the same in the reclined configuration and in the berth configuration.

A seat cushion frame configuring framework of a seat cushion for an occupant of a vehicle to sit on, and including left and right side frames, a cushion pan, and a reinforcement member. The left and right side frames are disposed at left and right side portions of the seat cushion. The cushion pan connects upper end portions of front portions of the left and right side frames together in a seat left-right direction. The reinforcement member includes the left and right reinforcement portions respective affixed to the seat left-right direction sides of the rear end portion of the cushion pan.

A reclinable passenger seat including a base, a seat pan frame having a front end connected to the base via a first fixed pivot, a support arm having one end connected to the base via a second fixed pivot aft of the first fixed pivot, and a backrest frame having an upper backrest member and a lower backrest member. An opposed end of the support arm is pivotally connected to the lower backrest member at a first location spaced from the upper backrest member. A rear end of the seat pan frame is pivotally connected to the lower backrest member at a second location between the first location and the upper backrest member. The backrest frame and seat pan frame are configured to move simultaneously between a sitting configuration and a reclined configuration through pivoting motion about the fixed pivots and about the two locations.

The invention relates to a vehicle seat comprising a vehicle seat upper part and a vehicle seat lower part, which are spaced apart from one another along a height axis and are connected to one another by means of a scissor frame arrangement, wherein the scissor frame arrangement comprises at least one inner swinging arm and at least one outer swinging arm, wherein the at least one inner swinging arm and the at least one outer swinging arm are mechanically coupled, whereby an angle of inclination of the vehicle seat upper part relative to the vehicle seat lower part can be specified, wherein the mechanical coupling comprises an arm element and a first connecting element pivotably connected thereto, wherein the angle of inclination can be specified by a length of the first connecting element.

A utility vehicle includes a frame, a first ground-engaging element coupled to a first portion of the frame, a second ground-engaging element coupled to a second portion of the frame, an operator platform supported by the frame, and a suspension system coupled between the operator platform and the frame to accommodate motion of the frame relative to the operator platform. The suspension system includes a first linkage assembly coupled to the operator platform and operable to accommodate motion of the second portion of the frame relative to the operator platform and a second linkage assembly having a first end coupled to the frame to secure the suspension system to the frame and a second end coupled to the first linkage assembly. The second linkage assembly being operable independent of the first linkage assembly to accommodate motion of the first portion of the frame relative to the operator platform.

A reclinable passenger seat including a base, a seat pan frame having a front end connected to the base via a first fixed pivot, a support arm having one end connected to the base via a second fixed pivot aft of the first fixed pivot, and a backrest frame having an upper backrest member and a lower backrest member. An opposed end of the support arm is pivotally connected to the lower backrest member at a first location spaced from the upper backrest member. A rear end of the seat pan frame is pivotally connected to the lower backrest member at a second location between the first location and the upper backrest member. The backrest frame and seat pan frame are configured to move simultaneously between a sitting configuration and a reclined configuration through pivoting motion about the fixed pivots and about the two locations.

A generally vertical pillar extends between a floor and a ceiling of a vehicle chassis and carries a seat. A damper is secured between an attachment point on the pillar and an attachment point vertically offset therefrom on the vehicle chassis. This damper comprises a plurality of C-shaped springs each attached at one of the attachment points to the pillar and extending therefrom at an angle of 45° relative to the pillar and an opposite end attached at the other attachment point to the chassis and extending therefrom at an angle of 45° relative to the pillar. The springs each are elastically deformable and form force absorbers that return to a starting shape after elastic deformation. Each C-shaped spring defines a gap open at an acute angle to the vertical and that varies in dimension on deformation of the respective spring.