Seat device

1. A rocking stool, comprising:

a seat rocking around a pendulum joint,

configured for stationary engagement with a floor a foot part,

a columnar intermediate piece connected to the foot part, and

a spring surrounding the intermediate piece for allowing the seat to move upwardly and downwardly;

wherein the pendulum joint is provided between the columnar intermediate piece and the such that the columnar intermediate piece rocks around the pendulum joint foot part,

wherein the seat is connected to the intermediate piece and formed by two individual seat halves positioned next to each other,

wherein:

the seat halves are movable independently of each other,

a coupling device is provided between the seat and the intermediate piece, and

the seat halves are movable in a horizontal translational motion through the coupling device,

the coupling device comprises at least one means for moving the seat halves by a translational movement in all spatial directions and rotationally around all spatial axes, the at least one means being provided beneath each seat half, and

the coupling device comprises a mechanism for adjusting the horizontal spacing between the seat halves.

2. The seat device according to claim 1 , wherein the at least one means comprises at least one elastic component.

3. The seat device according to claim 2 , wherein the at least one elastic component comprises a fluid-filled chamber or hydraulic cylinders.

4. Seat device according to claim 1 , wherein the coupling device comprises a mechanism for adjusting the height of the seat halves.

5. The seat device according to claim 1 , wherein the coupling device comprises at least one tilting mechanism for at least one seat half.

6. Seat device according to claim 5 , wherein the inclination of at least one seat half can be preset and/or restricted by means of an adjustment mechanism located on the coupling device and/or on the tilting mechanism.

7. Seat according to claim 1 , wherein a reset mechanism returns at least one seat half to its initial position.

8. Seat device according to claim 1 , wherein the seat device records the seat position by means of at least one sensor and comprises a feedback facility.

9. The seat device according to claim 1 , further comprising at least one of variable stops and modifiable fitting elements for interacting with transverse supports of the coupling device to restrict mobility.

10. The seat device according to claim 9 , further comprising a movement mechanism for adjusting the at least one of the variable stops and the modifiable fitting elements.

11. The seat device according to claim 1 , wherein the mechanism for adjusting the horizontal spacing between the seat halves comprises: a rail; a pair of slides slidable along the rail; and a threaded rod drive for varying the horizontal spacing between the slides, wherein each slide is connected to a respective seat halve for translating the movement of the slide to the respective seat halve.