Prior art From US patent 4,478,409 (Eads et al) it is known a swing- ing chair where two cables on each side extend from the chair body, said cables meeting about 1 meter above the seat and merging into a cable attached at the top of a frame.

In this known chair body a tilting or rocking movement takes place, but only by the back rest, while the seat it- self at all times will assume a substantial horizontal po- sition.

Background of the invention The human being is not made for sitting still in static furniture. Using the muscles and moving is a fundamental need of the human being, and movement is both healthy and pleasant also when using a chair.

The main purpose of the invention is to provide a chair which inspires movement and variation of the sitting posi- tion, and which furthermore can give the user a feeling of floating as compensation for the usually static environ- ment.

Purpose of the invention A main purpose of the present invention is to provide a new chair which, with respect to the prior art, not only can be used as a tilting chair, but which also can perform rocking and/or swinging movements.

Another purpose of the present invention is to provide di- rections for a chair arrangement where the chair in a sim- ple manner may be adjusted as regards the tilting and swinging movement depending on the weight and/or size of the user.

A further purpose of the present invention is to provide directions for a chair arrangement where the chair body may be suspended in one or more stationary supporting means, or in a stand which may be moved on a surface, optionally with the aid of rolling means.

Brief description of the invention These purposes are obtained in a chair arrangement of the type mentioned in the introductory paragraph, which is characterized by the features which will appear from the following description in view of the appended drawings, and from the appended claims.

Brief description of the drawings Figure 1 is a perspective rear view of a first exemplifying embodiment of a chair arrangement according to the inven- tion.

Figure 2 is a perspective side view of the embodiment ac- cording to Figure 1, where the user has assumed a backwards leaning sitting position.

Figure 3 is a side view of the embodiment according to Fig- ure 1 where the user has assumed a"neutral"sitting posi- tion.

Figure 4 is a perspective side view of the embodiment ac- cording to Figure 1 where the user has assumed a forward inclined sitting position.

Figure 5 is a perspective rear view of a further exemplify- ing embodiment of a chair arrangement according to the in- vention.

Description of exemplifying embodiments In Figure 1 a perspective view is shown of an exemplifying embodiment of a chair arrangement according to the inven- tion, comprising a seat 1 and a back rest 2 which together form a chair body 3. In the embodiment shown in Figure 1, the chair body 3 is supported by a stand 4, here comprising a lower cross-frame 5 which at each of its four end por- tions Sa, 5b, 5c and 5d carries a supporting column 6a, 6b, 6c and 6d, respectively.

As apparent from Figure 1, the seat 1 and back rest 2 of the chair body are flexibly connected to each other by means of ropes or similar members 7 and 8, while the seat 1 and back rest 2 also are flexibly attached with respect to the stand 4, here with the aid of ropes or similar members 7c and 8c, and 7a and 8a, respectively.

In other words, the seat 1 with its back rest may be flexi- bly attached to the substantially lower portion of the back seat 2, while the seat 1 at its forward portion is flexibly attached to the stand 4, and while the back rest at its substantially upper portion is flexibly attached to the same stand 4.

As will be appreciated, the seat 1 and back rest 2 may be attached to each other and the stand by means of divided or continuous ropes or similar members.

In the embodiment shown in Figure 1 the seat 1 and the back rest 2 are threaded onto two parallel ropes or similar mem- bers, here denoted 7 and 8, respectively, these members ex- tending from their respective forward, alternatively lower portion on the stand 4 to respective rear, alternatively higher portion of the stand 4.

More specifically, in the embodiment of Figure 1, the seat 1 and back rest 2 have been threaded so that the ropes, 7 and 8, respectively, extend partly under or behind a side edge, partly through and over or in front of the side edge, and then through and under or behind the side edge, it all being arranged for subsequent adjustment.

In the embodiment shown in Figure 1 there may be two threadings on either side of the seat 1, while for the back rest there is one threading, here in suitable side portions 2a, 2b extending along the side edges of said back rest 2.

The structure shown in the figure thus comprises a stand or framework 5 resting on a supporting surface, supporting columns 6a-6d which may be removably attached to said stand extending upwards from the four corners 5a-5d of the cross frame 5.

Cords are suspended from the top of said supporting columns 6a-6d and are threaded through plates which connect the seat and back rest to the chair or chair body.

The two rearmost cords are threaded through the back rest 2 in such a manner that it becomes tiltable about its own axis or a suitable transverse axis.

The cords are threaded through holes in the back rest and neck rest so that these may both tilt and adapt to the various angles of the back, as apparent from Figures 2-4.

The threading is also done in such a way that the parts constituting the chair body can be adjusted with respect to each other, and particularly, the threading allows a simple adjustment of the back rest in the height direction.

The stand or cross frame 5 has a suitable form providing space for the legs of the user. The chair may be erected from a flat package to finished furniture by mounting the four supporting columns in the four corners of the cross frame 5, the carrying pieces 5a-5d on the foot cross 5 op- tionally having a conical internal shape adapted to a coni- cal shape of the lower portion of the supporting columns 6a-6d, in order for the supporting columns to be wedged in place by the weight of the person using the chair body.

In Figure 2 a side view of the chair according to Figure 1 is shown where a user 10 has assumed a backwards leaning position with the seat 1 in a substantial horizontal posi- tion and with the back rest 2 in a backward inclined posi- tion.

Figure 3 shows the user 10 where he assumes a"neutral"po- sition, with the seat 1 still in an approximately horizon- tal position, but with the back rest 2 in a position which gives the user a normal sitting position.

Figure 4 shows the user 10 in a forward leaning position, where the seat 1 has assumed a pronounced downward sloping position, while the back rest 2 in this case is not used because its flexible connection to the seat 1 no longer hampers the tilting movement of the seat.

Figure 5 shows a variant of the embodiment of Figure 1, where the chair body 103 is suspended in four supporting

columns, the rear supporting columns 106a and 106b having longer length than the forward supporting columns 106c and 106d.

It will be understood that other embodiments may be envi- sioned for the stand than shown herein, for instance an ar- rangement where the columns are attached in the floor.

Alternatively, the stand carrying the columns may be made stationary or mobile, for instance so light that it may be carried or provided with rolling means.