Abstract: An office chair has a seating element with an upright tubular element (3) and a base, the seating element being connected to the base by means of the support element (1) so as to be swiveled and reset. Rubber buffers (19, 24) are provided between a connecting element (2) of the base, ring discs (11) and (17) and a tubular element (8) extending from the seating element downward and allow an oscillating movement of the seating element. The rubber buffers at least partially enclose the connecting element (2), thereby retaining the same. A pneumatic spring (4) allows to adjust the height of the seat. A thumb screw (16) allows to adjust the restoring force by compressing the rubber buffers (19, 24) to a greater or lesser extent.

Abstract: The disclosure relates to a chair comprising a seat part, at least one leg part, at least one foot part that consists of a predetermined plurality of foot elements and at least one spring assembly. According to the disclosure, at least one designated foot element and/or a sub-section of said element is configured to be mobile and is subject to a restoring moment under the action of a load.

Abstract: The invention relates to a chair comprising a seat part (2), at least one one leg part (3), at least one foot part (5) that consists of a predetermined plurality of foot elements (4) and at least one spring assembly (6). According to the invention, at least one designated foot element (4) and/or a sub-section (4?) of said element is configured to be mobile and is subject to a resotring moment under the action of a load.

Abstract: An office chair has a seating element with an upright tubular element (3) and a base, the seating element being connected to the base by means of the support element (1) so as to be swiveled and reset. Rubber buffers (19, 24) are provided between a connecting element (2) of the base, ring discs (11) and (17) and a tubular element (8) extending from the seating element downward and allow an oscillating movement of the seating element. The rubber buffers at least partially enclose the connecting element (2), thereby retaining the same. A pneumatic spring (4) allows to adjust the height of the seat. A thumb screw (16) allows to adjust the restoring force by compressing the rubber buffers (19, 24) to a greater or lesser extent.

Abstract: The invention relates to a chair comprising a seat part (2), at least one one leg part (3), at least one foot part (5) that consists of a predetermined plurality of foot elements (4) and at least one spring assembly (6). According to the invention, at least one designated foot element (4) and/or a sub-section (4?) of said element is configured to be mobile and is subject to a resotring moment under the action of a load.

Abstract: The invention concerns a floor construction comprising a plurality of surface portions (12) which each comprise at least one respective material with possibly different properties, in particular properties in regard to human perception when standing on the surface portions (12), wherein the different surface portions (12) are of such an arrangement and configuration that when moving on the floor construction (10) a continuously changing, unforeseeable sequence of different surface portions (12) has to be unavoidably stepped upon.

Abstract: The invention concerns a floor construction comprising a plurality of surface portions (12) which each comprise at least one respective material with possibly different properties, in particular properties in regard to human perception when standing on the surface portions (12), wherein the different surface portions (12) are of such an arrangement and configuration that when moving on the floor construction (10) a continuously changing, unforeseeable sequence of different surface portions (12) has to be unavoidably stepped upon.

Abstract: The seat back in accordance with the invention, provided more particularly for an active-dynamic seating device 5, comprises a base part 1, a connecting means 2 and a backrest 3. Preferably the base part 1 is configured plate-shaped and its upper side is provided for mounting a foot part 4 of an active-dynamic seating device 5. As an alternative the base part 1 may be secured directly to the foot part 4 of the active-dynamic seating device 5.

Abstract: A bar stool having a seat portion, an intermediate portion and a base portion, wherein the intermediate portion has a spring construction and is mounted tiltably and returnably on the base portion. The intermediate portion comprises a central pillar and a spring arrangement which are connected to distribute the weight between the seat portion and the base portion.

Abstract: The invention concerns a rocking stool having a seat portion (1), an intermediate portion (13) and a base portion (2), wherein the intermediate portion (3) is mounted tiltably and returnably on the base portion (2). The intermediate portion (3) comprises a central pillar (4) and a spring structure (5). The central pillar (4) and the spring structure (5) are connected in series in the flow of force of the seat weight between the seat portion (1) and the base portion (2) and a bearing guide is provided between the central pillar (4) and the spring structure (5).

Abstract: The device concerns a rocking stool comprising a seat surface 1 and a support structure 6 having a base 3, wherein arranged at the base end of the support structure 6 is a contact means 5 which can be pressed against the floor when the rocking stool is loaded and which is arranged centrally beneath the seat surface and which serves as a support in the rocking movement. The contact surface is pressed against the floor when the stool is loaded by virtue of elastic deformation of the support devices arranged on the support structure 6 and thus provides such a good frictional connection between the rocking stool and the floor that a travel movement of the rocking stool during the rocking movement is prevented.

Abstract: An active dynamic seat has a base, an intermediate part linked to the base and a seating part linked to the intermediate part. The seating part has on its lower side a shell-shaped, downwardly convex seating bowl. The seating part is supported in the vertical direction on a bearing arranged on a head part of the intermediate part that engages the shell-shaped lower side of the seating bowl, and is mounted so as to tilt in all other directions.

Abstract: An active dynamic seat has a base, an intermediate piece linked to the base and a seating part linked to the intermediate piece. The seating part is made of two pieces. The two halves of the seating part are resiliently linked in the vertical direction to the intermediate piece, independently from each other, and have each a support part and a seating half arranged thereon. Each seating half of a seating part half is mounted so as to tilt backwards and forwards on the support part.

Abstract: An active dynamic seat has a base, an intermediate piece linked to the base and a seat part linked to the intermediate piece. The seat part can tilt in all lateral directions and is linked in an essentially fixed manner in the vertical direction to the intermediate piece. One or more restoring devices act on the seat part. The intermediate piece is fixed at its lower end to the base and is resilient in the vertical direction. In another embodiment of the invention, the seat part is linked to the intermediate piece by several spring strips distributed around the periphery of the seat part and of the intermediate piece.

Abstract: An active dynamic seat has a base, a stiff intermediate piece linked to the base and a seating part linked to the intermediate piece. The seating part is rigidly secured to the intermediate piece and the intermediate piece is mounted in such a way on the base that its central area can tilt in all directions and slide vertically. In addition, one or several restoring devices are arranged on the intermediate piece, in the area below the mounting point on the base, for restoring the tilting movement and at the same time the vertical displacement of the intermediate piece and the seating part.

Abstract: An active dynamic seat has a base, an intermediate piece linked to the base and a seat part linked to the intermediate piece. The seat part can tilt in all lateral directions and is linked in an essentially fixed manner in the vertical direction to the intermediate piece. One or more restoring devices act on the seat part. The intermediate piece is fixed at its lower end to the base and is resilient in the vertical direction. In another embodiment of the invention, the seat part is linked to the intermediate piece by several spring strips distributed around the periphery of the seat part and of the intermediate piece.

Abstract: An active dynamic seat has a base, an intermediate piece linked to the base and a seating part linked to the intermediate piece. The seating part is fixed to the intermediate piece and the intermediate piece is linked to the base by a single bearing in a substantially fixed manner in the vertical direction and in a tilting manner in all lateral directions. The tilting movement is limited in all directions by a stop and one or several restoring devices are provided to restore the unloaded intermediate piece to the vertical.