Beds – Adjustable height
Patent
1979-11-02
1982-08-17
Grosz, Alexander
Beds
Adjustable height
5 8, 5 63, A47C 1904
Patent
active
043441955
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an arrangement in beds comprising a first frame structure having a rectangular support surface whose length is greater than its width; a further frame structure arranged to be supported on a foundation; and at least one pivot-arm mechanism which is arranged between said frame structures and connected to pivot locations mounted thereon, said mechanism being arranged to pivot between a first, downwardly swung position and a second upwardly swung position and, as a result of said pivot movements, to alter the vertical distance between the two frame structures and, at the same time, to displace the first frame structure laterally relative to the said further frame structure.
Arrangements of this type, which are mainly intended to raise the bed, are well known and an example of such is described, for example in U.S. Pat. No. 3,887,950. Even though an arrangement of this kind can be constructed so that the bed will be raised to a level which allows the bed to be made without it being necessary to stoop it does not improve the accessibility to the bed and its surroundings. This is due to the fact that normally beds are placed so that one long side and/or one end thereof extends along a wall and that the lower frame structure, which is stationary even when the bed is displaced laterally, prevents free passage around the bed.
Consequently it is a primary object of the invention to provide an arrangement of the kind mentioned in the introduction which will permit free passage around the bed when said bed is lifted, to allow it to be made at an optimum working height, even when the bed, in its normal position between the two frame structures, has a longitudinally extending edge and/or a short end edge contiguous to one wall.
This primary object is realized in accordance with the invention mainly by the fact that the said further frame structure in the downwardly swung position of the pivot-arm mechanism has at least one longitudinally extending side part located inwardly of the nearest longitudinally extending side edge of the support surface; that the pivot-arm mechanism is arranged, when swung upwardly, to lift the first frame structure and displace it laterally at least in the width direction of said support surface and to move said longitudinally extending side edge of said support surface towards and over the said longitudinally extending side part of said further frame structure.
Due to the fact that the longitudinally extending side part of the further frame structure lies inwardly of the nearest side edge of the support surface in the normal position of the bed, i.e. when the pivot-arm mechanism or pivot-arm mechanisms are collapsed, said side part will not project outwardly to prevent the bed from being fully pushed against a wall. When the bed is lifted, the first frame structure, and therewith said side edge of the support surface, will move away from the wall and in towards and over said side part, thereby to form between the wall and the bed a space which permits passage between said wall and said bed, whereby making of said bed is facilitated.
In a preferred embodiment of the invention, the arms of the pivot-arm mechanism are pivotable in a vertical plane which is inclined relative to the longitudinally extending edges of the bed, thereby enabling the bed to be laterally displaced both in the width direction of the bed and its longitudinal direction. In addition to the free space along one long side of the bed, there is also provided in this way a free space along one end of the bed, provided that an end part of the further frame structure lies inwardly of a corresponding short end of the support surface in the normal position of the bed.
So that the invention will be more readily understood and optional features thereof made apparent, exemplary embodiments of the invention will now be described with reference to the accompanying schematic drawings, in which
FIG. 1 is a cut-away side view of a bed according to a first embodiment,
FIG. 2 illustrates the bed shown in FIG.
REFERENCES:
patent: 2628369 (1953-02-01), Urban
patent: 3693199 (1972-09-01), Wintmerthur
patent: 3887950 (1975-06-01), Wachsman
patent: 3987503 (1976-10-01), Kean
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