Chairs and seats – Rest for knee – leg – or foot – Connected to chair or seat for relative movement
Patent
1995-04-19
1996-12-31
Nelson, Jr., Milton
Chairs and seats
Rest for knee, leg, or foot
Connected to chair or seat for relative movement
29728411, 2974631, A47C 750
Patent
active
055887082
DESCRIPTION:
BRIEF SUMMARY
An arrangement in a calf-supporting part for a piece of furniture or such like, particularly a chair, including a chair seat part and a back rest part, the calf-supporting part including a web-shaped portion which is given support by moveable supporting/carrying devices and runs in a loop through one or several curved guides attached to the supporting/carrying devices, so that the web-shaped portion may be pushed continuously between a shielded, inactive retracted position beneath the chair seat portion and an active protruding calf-supporting position, chiefly flush with the chair seat part.
PRIOR ART
From NO patent specification 162.994 a chair arrangement is known of the nature stated above, a calf-supporting part having been made of an upholstered web-shaped portion, stiffened in its traverse direction, the said web-shaped portion consisting of a base of traversing stays, comparatively rigid in their lengthwise direction and sideways interlinking. Above the said stays, upholstery is arranged, and also a web-shaped cover material, preferably a cover material matching the cover of the chair as such.
The background to the present invention is in the task of showing an improved arrangement in a calf-supporting part in which there is no need to rely on linked rigid stays for stiffening the upholstered web-shaped portion, such interlinking, rigid stays being complicated and costly to make while at the same time the rigidity of the stays causes the rolling function to be slow-moving.
A further task of the present invention is in describing an arrangement which not only avoids the use of interlinking rigid stays but may also be manufactured from uncomplicated components, while at the same time the transition of the calf-support from its passive to its active position and vice versa may be performed with the use of comparatively little effort.
DESCRIPTION OF THE INVENTION
The aims outlined above will be achieved with an arrangement of the nature mentioned initially, which is, according to the present invention characterised by the supporting/carrying devices comprising one single slim sheet-shaped device segregated physically from the web-shaped portion.
Because this physical segregation is achieved between the actual supporting/carrying devices and the web-shaped portion, the web-shaped portion may chiefly in itself comprise a separate cover material, i.e. a material or man-made or cloth-like structure constituting the same cover material or readily adaptable to the cover material of the piece of furniture, specifically the chair seat.
Preferably, the sheet-shaped supporting/carrying device is at either side of its rear part fitted with a smooth wheel and a toothed wheel. Preferably then each of the toothed wheels on the sheet-shaped supporting/carrying device will interact with a corresponding toothed track or toothed guide each arranged in a groove positioned at the side and fastened to the underside of the chair seat or to other parts of the chair or the piece of furniture.
At its forward part, the sheet-shaped supporting/carrying device may then have been made with a guide designed as a smooth sliding roller, which runs traversely and can be turned freely.
At the rear area of the sheet-shaped supporting/carrying device a transverse turning axle is arranged, carrying at either end one each of the said toothed wheels, in order thereby to turn in step with these while at the same time at least one band-like guiding device has been wound round the said turning axle.
The said band-like guiding device is at its one end fixed permanently to a frame part, chiefly arranged at a lower forward part of the chair seat part, in which area also one stationary traversing edge of the web-shaped portion has been attached, the band-like guiding device at its other end being fixed to the opposite moveable traversing edge of the web-shaped portion.
From a retracted passive position below or behind the relevant part of the chair, in particular the chair seat part, the calf-supporting part may thereby be pushed forward, na
REFERENCES:
patent: 155187 (1874-09-01), Enger
patent: 3007738 (1961-11-01), Gardel et al.
Meinert S.o slashed.ren
Rykken Arne O.
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