Supports – Stand – Understructure
Patent
1986-11-07
1988-03-01
Ramirez, Ramon O.
Supports
Stand
Understructure
2481631, F16M 1132
Patent
active
047280670
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a composite leg-support, in particular for sitting furniture, small tables and office furniture.
From practice several structural embodiments are known, thus e.g. swivel chairs, tables, TV-stands are supported in this way, the common characteristic of which lies in that generally three to five legs are affixed to a vertical shank made of a tube of circular or polygonal cross-section, perpendicularly or approximately perpendicularly and horizontally thereto and the other ends of said legs are supported by the floor. One group of said leg-supports cannot be disassembled at all; these the legs are welded to the shank or the shank and the legs are formed as a monolithic casting. In dependence of the load to be expected, these leg-supports are made of cast-iron, aluminium or steel with proper strength characteristics. As a consequence, the leg-support has a considerable weight, the solution is not at all material-saving and in spite of the heavy thick construction useful life of the leg-support is not too long.
A further disadvantageous feature of known leg-supports lies in the considerable space requirement, increasing costs in course of transport and, if leg-supports are transported so that shanks and/or legs are intertwined, surfacial finish may become damaged and this way of transport may result in an aesthetically inferior product.
Another increasingly dominant group of leg-supports is formed by leg-supports which can be assembled and disassembled, respectively. With these solutions in course of storage and transport shanks can be grouped separately from furniture and legs, while the legs having the shape of an elongated prism can be stored and transported in an optional form and number, with a good utilization of space.
It can be generally stated that legs of the leg-supports are bent to the desired shape from a sheet-material having been cut previously to the required shape and so that the cross-section of the leg is showing a reversed U-profile. On the end of the leg directed to the shank a thick metal plate is welded for the sake of locking, in which one or generally two threaded bores are machined. This bore or the bores can be found on the connecting place of the shank and leg too, and when assembling the leg-support the leg is pressed onto the shank by means of screws having been introduced into the shank inwardly.
The disadvantage of this solution lies in that assembly is a time-consumptive process requiring live labor, in addition, screwed connections become loose under load in course of time resulting in the damage of screwed joints and lability of the leg-support and, in a worse case, in falling out of the leg and thus in an accident.
Leg-supports used to be assembled--due to the relatively narrow diameters of shank--with screws with socket head opening, which can be tightened with a so-called hexagonal wrench not staying always at disposal.
In the U.S. Pat. No. 3,801,054 a furniture support is disclosed, wherein the sides of the legs with a reversed U-profile forming the flanks of the U-shape are extended and bent to the right angle, they are bearing up against one another and overlapping each other, while the overlapped sides are interwelded. In compliance with the extended sides, on the mantle of the shank of the leg-support two longitudinal slots each are formed, the number of which corresponds to the number of legs, into which the extended sides of the legs are pushed-in from below and so, that the upper edge of the elongated sides should impact on the bottom of the slots. Now, the overlapped and welded end of the extended sides lies in the inside of the shank. A tumbler-shaped disc is also forming part of the furniture supporting armature, the outer diameter of which corresponds to the inner diameter of the shank of the leg-support and the mantle of which is formed by vertical tongues, the number of which corresponds to the number of the legs. When the disc is located in the shank, said tongues get below the overlapped ends and bear up against the inner surface of
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Schetl Laszlo
Steinmetzer Karl
Ramirez Ramon O.
Stilexo Industrial AB
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