To cause an appropriate damping force to work according to a relative displacement with a simple configuration. A movable inner cylinder 3 slidable in an outer cylinder 2 in an axial direction and having orifices 31 formed in its peripheral wall 31 is provided, a piston 5 around which a linear member 52 that generates a frictional force is wound is further provided in the movable inner cylinder 3, and a viscous liquid 7 is filled in the outer cylinder 2 including the inside of the movable inner cylinder 3. Accordingly, when the piston 5 moves together with the movable inner cylinder 3, a high damping force is not exerted, whereas when the piston 5 relatively moves in the movable inner cylinder 3, the high damping force is exerted owing to viscous friction between the piston 5 and the movable inner cylinder 3 and the viscous resistance of the viscous liquid passing through the orifices.

A vehicle seat is provided with an upper part which is height-adjustably mounted with respect to a lower part by at least one scissor frame, where the scissor frame has a first scissor arm member and a second scissor arm member which are pivotally mounted about a common axis, where the first scissor arm member has a first, a second and a third lever member which are series-connected, where the first lever member is pivotally mounted with respect to the upper part about a third axis, where the third lever member is pivotally mounted with respect to the lower part about a fourth axis, and where the second lever member is pivotally mounted about the common axis and is rotationally connected to the first lever member by a fifth axis and rotationally connected to the third lever member by a sixth axis.

A vehicle seat having a residual spring travel controller and an air spring, the residual spring travel controller and the air spring each having a first end that is connected to a first connecting link of the vehicle seat and each having a second end that is connected to a second connecting link of the vehicle seat, and the residual spring travel controller comprising a piston element that is connected to the first end of the residual spring travel controller and a rod element that is connected to the second end of the residual spring travel controller, it being possible to bring the piston element into contact with a valve element or a switch element by means of a rotary and/or sliding movement with respect to the rod element to adjust an amount of air of the air spring.

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.

A vehicle seat can be configured to selectively provide support to a vehicle occupant in conditions when lateral acceleration is experienced. An actuator can be located within the vehicle seat. When activated, the actuator cause a portion of the seat to morph into an activated configuration. The actuator can be activated based on vehicle speed, steering angle, and/or lateral acceleration. The actuator can include end members connected by a shape memory material connecting member. Actuator blocks with sliding surfaces can be located between the end members. The actuator can be configured such that, in response to an activation input, the shape memory material connecting member contracts, which draws the end members toward each other and causes corresponding sliding surfaces of the plurality of actuator blocks to engage and slide relative to each other. In this way, the actuator morphs into an activated configuration in which its overall height increases.

An anti-submarine arrangement for a vehicle seat includes an elongated member pivotably attached between opposing members of a seat bottom support structure. A leg is fixedly attached to the elongated member and pivotably attached to a structural portion of the vehicle seat. The elongated member is rotatable forward and downward relative to the structural portion of the vehicle seat. A damper arrangement is attached to the leg and to the structural portion of the vehicle seat. The damper arrangement opposes a forward and downward rotation of the elongated member.

A passenger seat includes a bottom support to be connected to the aircraft floor, a seat pan frame, and a support structure interconnecting the seat pan frame to the bottom support. A front support member defines a frontmost portion of the support structure, and has a top end connected to a front end of the seat pan frame and a bottom end connected to the bottom support. The front end of the seat pan frame is forwardly offset from a front end of the bottom support and the top end of the front support member is forwardly offset from its bottom end such that an empty space is defined across a width of the seat between the seat pan frame and the floor, forwardly of the support structure, forwardly of the bottom support, and rearwardly of a vertical plane aligned with the front end of the seat pan frame.

A support member may be configured for selective connection with and removal from track assemblies. A support member may include a body and a rolling member rotatably connected to the body to facilitate movement of the support member along a track. The rolling member may include a grooved configuration to limit movement of the support member relative to said track in a Y-direction. The rolling member may include a groove configured to engage a protrusion or ridge of said track. The rolling member may include a first portion and a second portion separated in an axial direction by the groove.

An active vibration isolation system for isolating a suspended platform from vibration input to the vibration isolation system base includes an exoskeleton, a rotary actuator, and a drive mechanism separate from the exoskeleton for providing force output from the rotary actuator to the suspended plant. The rotary actuator may include inner and outer rotors which rotate relative to each other. The rotary actuator may be free to translate relative to the vibration isolation system base and the suspended platform, and both the inner and outer rotors may be free to rotate relative to the exoskeleton.

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.