A mechanism and method for assembling a base to a piece of furniture is provided with at least two cams having complimentary interlock mechanisms constructed and arranged to interlock one to another.

An activating platform is disclosed. The platform includes a base that has a lower surface that is curved in a direction transverse to a longitudinal axis. The curved shape of the base provokes a user rock around in a small angle around a middle position, thereby promoting active sitting.

An activating platform is disclosed. The platform includes a base that has a lower surface that is curved in a direction transverse to a longitudinal axis. The curved shape of the base provokes a user rock around in a small angle around a middle position, thereby promoting active sitting.

A furniture member may include a base frame and a seat assembly mounted on the base frame. The seat assembly may include a seat frame, a seatback, a seat bottom, and a legrest mechanism. The legrest mechanism may be mounted to the seat frame and attached to a legrest platform. The legrest mechanism may include a drive rod coupled to a pantograph linkage that is movable relative to the seat frame between retracted and extended positions.

A furniture member may include a base frame and a seat assembly mounted on the base frame. The seat assembly may include a seat frame, a seatback, a seat bottom, and a legrest mechanism. The legrest mechanism may be mounted to the seat frame and attached to a legrest platform. The legrest mechanism may include a drive rod coupled to a pantograph linkage that is movable relative to the seat frame between retracted and extended positions.

The present disclosure relates to a mechanical extension apparatus for an extendable chair unit and a chair unit including such mechanical extension apparatus. The mechanical extension apparatus includes: a reclining apparatus that include multiple links attached to the seat, the backrest and the footrest of the extendable seat, and such reclining apparatus is configured to convert the extendable seat between a sitting position and a lying position. The mechanical extension apparatus also includes an actuator that is attached to the reclining apparatus, and the actuator is configured to electronically convert the extendable seat between the sitting position and the lying position.

A chair includes a movable part including a seat on which a user sits, a supporting part configured to support the movable part in such a way that the movable part can be moved to the right and to the left; and a restoration unit, which is a biasing member configured to bias the movable part toward the neutral position in the right and the left. The supporting part supports the movable part in such a way that the movable part descends as the movable part is away from the neutral position.

A chair includes a movable part including a seat on which a user sits, a supporting part configured to support the movable part in such a way that the movable part can be moved to the right and to the left; and a restoration unit, which is a biasing member configured to bias the movable part toward the neutral position in the right and the left. The supporting part supports the movable part in such a way that the movable part descends as the movable part is away from the neutral position.

A virtual-reality navigation controller includes a base, a seat, a vertical support to support the seat on the base, and a rotatable connector between the seat and the vertical support to tilt the seat about a rotational center of the rotatable connector in response to directional forces exerted by a user seated on the seat. The virtual-reality navigation controller further includes a motion-detection controller to measure pitch corresponding to the tilt of the seat resulting from the directional forces.

A virtual-reality navigation controller includes a base, a seat, a vertical support to support the seat on the base, and a rotatable connector between the seat and the vertical support to tilt the seat about a rotational center of the rotatable connector in response to directional forces exerted by a user seated on the seat. The virtual-reality navigation controller further includes a motion-detection controller to measure pitch corresponding to the tilt of the seat resulting from the directional forces.