Abstract: The backrest of a chair comprises a frame, a backrest support and a neck support. A membrane is clipped into the frame, and the backrest support is articulated on a tilting mechanism. The frame comprises two side parts and two cross-pieces, the lower cross-piece lying at the height of the user's lumbar vertebra. The frame and the backrest support are interconnected in one piece. The component created as a result is advantageously a plastic injection molding produced by the gas injection technique (GIT) and the plastic is a glass-fiber-reinforced polyarylamide. This overall structure of the backrest provides a high level of sitting comfort by elastic support of the back in all major regions and directions of movement, but at the same time also considerably reduces production, transport and assembly complexity and has an aesthetically impressive, distinctive form.

Abstract: A work table includes a frame with a vertical central column as well as a base and a work surface, which is fastened to a support element. The height and angle of the work surface are adjustable. A joint seating device is provided on an upper end of the central column and a swivel arm is arranged in a pivoting manner about a horizontal axis of the joint seating device. The swivel arm contains another rotary joint, about whose horizontal axis the support element and the work surface connected with it are arranged in a pivoting manner.

Abstract: The backrest of a chair comprises a frame (1), a backrest support (6) and a neck support (15). A membrane is clipped into the frame (1), and the backrest support (6) is articulated on a tilting mechanism. The frame comprises two side parts (2, 3) and two cross-pieces (4, 5), the lower cross-piece (4) lying at the height of the user's lumbar vertebra. The frame (1) and the backrest support (6) are interconnected in one piece. The component created as a result, is advantageoulsly a plastic injection moulding produced by the gas injection technique (GIT), and the plastic is a glass-fibre-reinforced polyarylamide. This overall structure of the backrest provides a high level of sitting comfort by elastic support of the back in all major regions and directions of movement, but at the same time also considerably reduces production, transport and assembly complexity and has an aesthetically impressive, distinctive form.

Abstract: A folding table including a folding steel wire frame and a table top. The wire frame includes four vertical struts and four cross-struts, and the table top has a front edge profile connected thereto. The front edge profile pivotably connects to the upper ends of the vertical struts. The vertical struts each connect on their lower ends to rollers in a horizontally non-pivoting manner. The rollers are also connected to the lower ends of the cross-struts in a horizontally pivoting manner. A first anchor plate is arranged on the bottom of the table top for fixably connecting upper ends of two of the cross struts, and a second anchor plate is arranged on the bottom of the table of fixably connecting upper ends of the other two of the four cross struts.

Abstract: The invention relates to a work table, consisting of a frame (1) with a vertical central column (5) as well as a base (6) and a height- and tilt-adjustable work surface (3), which is fastened to a support element (9). The invention is characterized by the fact that on the upper end of the central column (5) a joint seating device (7) is provided, about whose horizontal axis (17) a swivel arm (4) is arranged in a pivoting manner, wherein the swivel arm (4) contains another rotary joint (18), about whose horizontal axis (19) the support element (9) and the work surface (3) connected with it are arranged in a pivoting manner. With this work table, a user can easily and quickly realize a change in the working position (upright sitting position, tilted-back almost lying position, standing position).

Abstract: The invention relates to a folding table, consisting of a table top (1) and a folding steel wire frame (2) with four vertical struts (3) and four cross-struts (4). It is characterized by the fact that the vertical struts (3) on one hand are arranged on the top in a pivoting manner in a table front edge profile (5) that is firmly connected with the table top (1) and on the other hand are arranged on the bottom in rollers (6) in a horizontally non-pivoting manner, wherein the vertical struts (3) each are arranged only in half of the rollers (6) and in the other half of the rollers (6) the cross-struts (4) are arranged in a horizontally pivoting manner, and wherein the cross-struts (4) at their upper ends are fixed in an anchor plate (7), which is arranged on the bottom of the table top (1). The table with a filigree appearance exhibits good stability, can be transported easily and is well protected against damage due to scratching during assembly.

Abstract: A device for lumbar support for an office chair having a seatback including a seatback frame and a membrane stretched over the seatback frame. The device can be arranged behind the membrane and can be housed in the seatback frame to provide vertical and horizontal adjustment independent of the membrane. Preferably, the device includes a central part having two comparably rigid carrier elements connected to each other via an elastic element arranged therebetween, the rigid carrier elements each including a guide track that can be arranged in the seatback frame to provide the vertical adjustment. A front part includes a cushion attached to an upholstery plate, the upholstery plate facing the membrane. A rear part includes a plastic plate. The cushion and the plastic plate are connected via a clip connection, and the clip connection is guided in slots of the carrier elements.