Chairs and seats – Rest for knee – leg – or foot – For occupants knee or shin
Patent
1991-06-13
1993-10-26
Brown, Peter R.
Chairs and seats
Rest for knee, leg, or foot
For occupants knee or shin
297432, A47C 750
Patent
active
052559572
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an arrangement in a chair, for example a combi-chair allowing for a plurality of sitting positions. One example of such a combi-chair includes a chair allowing for a kneeling-like sitting position on an inclined forwardly tilting chair seat in which the shins of the user may rest on a shin support, as well as a usual chair sitting position on a substantially horizontal or rearwardly tilting chair seat in which the back of the user may rest against a back rest.
It is to be understood that the arrangement is not limited to the above described example of a combi-chair, since by the expression combi-chair it is to be understood all types of chairs giving possibilities of variation as regards sitting positions, for example "saddle chairs", on which the user may take "riding positions" in two, alternatively four different positions on the chair seat.
Further, the expression combi-chair should also comprise other types of sitting furniture allowing for various sitting positions, which includes forwardly tilting, rearwardly tilting, sidewardly tilting, completely or partly recumbent or more or less upright positions, in which the back, the chest, thighs, calfs, feet, head, neck or other body parts are completely or partly supported by appropriate supporting devices.
PRIOR ART
From NO patent application 85.0641 (GB 2.171.005) relating to a device to be used in a kneeling-like sitting position, there is known a solution for enabling a kneeling-like sitting position in connection with a chair as known per see, for example an office chair, without thereby having to buy a completely new chair for this purpose. In accordance with this prior art technique the solution suggests the provision of a supporting frame which preferably is detachably mounted on the frame of the chair or parts thereof, the supporting frame carrying at least one cushion which may support the user's knee or calf portion.
However, according to NO patent application 85.0641 only instructions are given to the fact that the supporting frame is to be attached around or to the centre column of the chair frame, which means instructions for clamping elements which will result in, if the chair is provided with a sub-frame, that said supporting frame will follow the movement of the sub-frame, i.e. constitute a so to say integrated part of said sub-frame. However, by such an integrated installation of the supporting frame and the sub-frame the user will not in any position of the seat be allowed a free access to, or freely be able to raise from the chair seat, without being obstructed by the supporting frame including its knee/calf supporting cushion. In other words, the user must swing himself and the body of the chair away from the supporting frame which is integrated in relation to the sub-frame, for thereby escaping from the area of said knee/calf supporting portion. If the user sits at a writing table and wishes no longer to use the knee/calf supporting device, she or he must first raise from the chair, whereafter the knee/shin portion together with the sub-frame must be swung away from the table, whereafter the user once more can take his place on the chair seat.
Likewise, a user who has swung himself 90.degree. away from for example the working desk to for example a typewriter table, will leave the area of the knee/shin portion which remains in the same position as the sub-frame. If the user then will use the shin support at the typewriter table, the user must also here rise in order to turn the complete sub-frame of the chair together with the supporting frame for thereby bringing the knee/shin portion into the area of the seat portion, and when the user is to sit down, this will involve a "cumbersome" straddling over the knee/shin portion before the user can position his posterior on the chair seat.
Further, NO patent application 85.0641 only discloses a device which supports the knee/shin portion, which means that the user is limited either to use the chair as a "conventional" chair, or as
REFERENCES:
patent: 1067914 (1918-07-01), Giasson
patent: 2524187 (1950-10-01), Boles
patent: 3820844 (1974-06-01), Fortnau
patent: 4767159 (1988-08-01), Opsvik
patent: 4767160 (1988-08-01), Mengshoel et al.
patent: 4832407 (1989-05-01), Serber
patent: 4863217 (1989-09-01), Fountain
Mengshoel Hans C.
Opsvik Peter
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