Supports – Stand – Plural leg
Patent
1981-06-10
1985-09-17
Schultz, William H.
Supports
Stand
Plural leg
248172, F16M 1138
Patent
active
045415978
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to adjustable self-support stands which may be utilized to support diverse apparatus, for example in offices, laboratories, shops or apartments.
BACKGROUND OF THE INVENTION
It is know to provide stands having legs in which adjustment is achieved exclusively by platforms which are adapted to receive the legs of the apparatus to be supported, or by the spacing of the stand but at the expense of the positioning, between the legs, of a frame adapted to the dimensions of the apparatus to be supported. These supports are maladapted, expensive to manufacture and of limited use.
The present invention has as an aim to overcome these inconveniences.
SUMMARY OF THE INVENTION
The invention as defined in the claims, resolves the above-described problems by providing a stand adapted to allow for the instantaneous adjustment of the ground support polygon as a function of the dimensions of the apparatus to be supported. To this end, the adjustable stand comprises four legs angled substantially in a right angle so that each leg comprises a substantially vertical upright portion and a substantially horizontal arm portion and and also comprises an assembly means or apparatus connecting in pairs, the substantially horizontal arms of diametrically opposed legs and providing a first angular adjustment around a vertical axis and a second adjustment of the spacing of the legs, i.e., between the legs comprising a diametrically opposed pair. This self-supporting assembly device is the only necessary means of connection between the legs.
This stand offers the advantage of resisting all flexional and/or torsional stresses to which it can be subjected, particularly during displacement while the stand is loaded and the legs have wheels. This stand also assures the maximum amplitude of the adjustment of the spacing of the legs .
BRIEF DESCRIPTION OF THE FIGURES
In the following, the invention is described in greater detail with the help of drawings showing only one embodiment.
FIG. 1 is a composite view in perspective of a stand according to the invention;
FIG. 2 is an exploded view of the stand illustrated in FIG. 1;
FIG. 3 is a top view of the central assembly device according to the present invention;
FIG. 4 is a cross-sectional view along axis IV--IV of FIG. 3;
FIG. 5 is a planar view along axis V--V of FIG. 4.
FIG. 6 is an exploded view of a stand according to one embodiment;
FIG. 7 is a cross-sectional view along axis VIII--VIII of FIG. 6.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 illustrates a stand according to the present invention, this stand comprising on the one hand four angled legs 1-4 and on the other hand an assembly means or device 5.
The angled legs, which are shown as and preferably are tubular, each comprise an upright portion 6 and a substantially horizontal arm portion 7.
Horizontal arms 7 of the legs are connected 2 by 2 end to end in the assembly means or apparatus 5, which is composed principally of four shells 8, 9, 10 and 11 each shell member comprising a substantially horizontal central plate 12, and two sleeve halves which are substantially coaxial, or substantially diametrically opposed, as well as a bolt or other tightening means 13 for extending through the four plates 12, of the shell members 8-11 along their center. These plates are squeezed or tightly secured between head 14 of bolt or other tightening and securing member 13 and a nut 15 screwed on the shaft of bolt 13.
The successive shells are to be assembled in stacked relationship to one another, as shown in the figures and are described below, with reference to FIGS. 2-5. Bottom shell member 8 is described first, with members 9-11 being described successively thereafter.
The first shell 8 has a concave surface which is turned upwardly and is associated with the leg couple 1-2. Shell member 8 carries lower half-sleeve 16a for receiving leg 1, and also carries lower half-sleeve 17a for receiving leg 2. Central plate 12 of shell 8 is provided with a substantially cylindrical peripheral skir
REFERENCES:
patent: 574424 (1897-01-01), Hoffman
patent: 587896 (1897-08-01), White
patent: 1068679 (1913-07-01), Lortz
patent: 1338486 (1920-04-01), Burdick
patent: 1777759 (1930-10-01), Melvin
patent: 2212455 (1940-08-01), Reed
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