Supports: cabinet structure – With continuously level revolvable components – Continuously housed
Patent
1994-07-21
1996-05-14
Cuomo, Peter M.
Supports: cabinet structure
With continuously level revolvable components
Continuously housed
312307, 312134, A47B 4900
Patent
active
055162010
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to apparatus with rotary supports for shelves.
BACKGROUND OF THE INVENTION
In apparatus of this type, the shelves are superposed in two columns, disposed in front and to the rear, the first column masking the second.
The shelves are fixed to the mechanism at each of their lateral sides. There are therefore two identical mechanisms, connected by a motor shaft which passes through the apparatus.
On the other hand, the shelves are maintained horizontal by a lever bearing a roller engaged in a slideway, for each of the mechanisms. There are thus two slideways face to face.
SUMMARY OF THE INVENTION
The device according to the invention permits positioning these two columns of shelves side by side, such that all the shelves are visible at once.
To this end, the device according to the invention comprises, according to a first characteristic, two vertical parallel planes, disposed one in front of the other, between which is interposed the mechanism which is fixed in the rear plane.
The forward plane, on which bear the shelves, has an endless slot in the form of an elongated loop through which pass the axes of the supports on which the shelves are fixed at their rear. The portion which defines this slot being maintained in place by any securement means which project on the rear plane; this latter could also be constituted by the wall of a chamber or the divider of the furniture on which the apparatus is fixed.
The mechanism is of the type described in French patent 8801976 and its addition 8901963; but the support plates of cast metal which it comprises have, according to another characteristic, four semi-circular ribs, concentric two by two, which constitute the arcuate portion of the two slideways. The projection, which supports the chain pinions, is formed in the middle of four downstrokes of these arcs of circles.
According to another characteristic, the shelf supports bear two rollers, engaged respectively in each of the two slide guides; these rollers therefore follow parallel paths and always remain disposed, the one with respect to the other, in the same horizontal line.
According to still another characteristic, the arms of the shelf supports carry, on one of their surfaces, a roller which bears on the two vertical planes of the device which thus retains the shelf supports when the latter, loaded, tend to be driven forwardly.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings illustrate the invention:
FIG. 1 shows in perspective the arrangement of the two planes of the device.
FIG. 2 shows the same view, the axle of the rotary support of the shelf passing through the slot.
FIG. 3 shows in perspective the support plate of cast metal and, in exploded view, the rotary shelf support.
FIG. 4 shows the support plate of cast metal in a frontal view.
DETAILED DESCRIPTION OF THE INVENTION
Referring to these drawings, the device is arranged in two vertical parallel planes, disposed one in front of the other. The rear plane 1 carries the mechanism which is interposed between the two vertical planes. The forward plane 2 has an endless slot 13 forming an elongated loop through which pass the axles 8 of the rotatable shelf supporting mechanisms 14 (only one being shown in the drawings).
The mechanism comprises, from top to bottom, the cast metal plates 3 of the type described in French patent 8801976; therefore, whose shape here has, according to a second characteristic, four semi-circular ribs, concentric two by two, constituting the slideways 4 and 5 in arcs of circles.
The straight portions connecting the slideways of the support plate 3 at the top to that at the bottom, constitute the two slideways 4 and 5, in the shape of closed loops, separate from each other and symmetrical and disposed in the same vertical plane. A projection 6 disposed in the middle of the slideways supports a sprocket wheel and a chain 15 in a manner similar to French Patent 8801976.
The shelf supporting mechanism 14 comprises two carrying arms 12 which are mounted by
REFERENCES:
patent: 2315790 (1943-04-01), Hallwood
patent: 3199658 (1965-08-01), Graber et al.
patent: 4017132 (1977-04-01), Banys
patent: 4178048 (1979-12-01), Zippel
patent: 4793666 (1988-12-01), Torrence
Cuomo Peter M.
Wilkins Janet M.
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