Extendable table

Abstract: This invention consists of an arrangement for extendable tables in which the sides have runners (4, 5) and with at least one of the planes being moveable, with the upper plane (2) which is moveable to one side, having two pairs of rollers (7,8) located at the centre and end of this to function as a stop, and a lower plane (3) with rollers (9) located at 1/7 from its ends, the lower plane of which can be manually raised after movement of both up to the upper plane by the channel (12) with there being an extra support for the upper plane provided by a fixed roller (6), with stops fitted at the end of the lower runner (10) on the lower runner (13) lined up with a communication channel between both runners.

Description: The sector of the technique for this invention is that of extending tables and particularly the ones which comprise a moving upper plane which gives rise to an arrangement with a different plane as a continuation of this. Statement of the prior state of the art. There is utility model no. ES 1017370-Y by this same applicant, for an arrangement for the folding/unfolding of the upper plane of a table, formed of a moving upper plane which allows the outer end of the previously hidden plane to be lifted, by means of a wedge profile runner. Also ES 1025943-Y for a arrangement for prolonging the opaque plane of a table, this one fixed, based on the used of a moving runner which can be raised after it has reached one end of its run and in said position it can be laid out as a continuation of and at the same height the main unmoving one. The aim of this invention is to have a layout of extending tables which is formed of a moving upper plane, only movable in one direction as far as certain stops, by means of pairs of rollers inserted in the frame of the plane, and a lower plane that is also mobile, fitted with a pair of rollers, that can reach the upper plane, one end by manual movement and the other end by movement of the roller by communication between the lower and upper guides. In order to make the following explanation clearer a sheet of drawings is enclosed which represents the essence of this invention in two figures. Figure 1 shows a view of the table in a perspectivediagram. Figure 2 shows a partial view of the frame in profile. In said figure 1 represents the lateral structure, 2 the upper plane moveable to one side, 3 the lower plane of the same length as the side structure, and 4 the upper guide, 5 the lower gude, 6 being the roller to support the lower plane when this is installed on the upper guide, with 7 being the central roller of the upper plane, 8 the end roller of the upper plane, 9 the roller of the lower plane, 10 the stop of the lower channel, 11 the lower sliding roller, 12 the channel or portion between the two guides and 13 the stop of the lower guides lined up with channel 12, located at roughly 1/3 of the way along its length. The table we are now dealing with functions in the following way: when folded, both planes 2 and 3, which have substantially the same length as the lateral structure, are placed on top of the other. The upper one can be moved along guide 4, up to two extreme positions: moved to one end or moved to the one end. It has two pairs of rollers. In each one of both positions, rollers 7 and 8 constitute the stops of said movement, with the guide having at its end a limitation for this movement as a stop. The lower plane is fitted with one sole pair of rollers fitted at roughly 1/7 of the way along its length. The lower channel will not allow the end not fitted with rollers on the lower plane 3 to drop. In its folded position, the lower plane rests on a sliding roller 11. The unfolding of the table takes place in the following way. First of all the upper plane has to move to its stop. Then the lower one moves in the same direction, this fact making it stick out on the other side, far enough to determine its moving over the roller 6 which act as a support in this position. Traction on this will determine the coincidence of the roller 9 of the lower plane on the stop 13 lined up with channel 12, which by tilting has to rise up to the upper plane, slight pressure being enough for it to fit stably as a continuation of the upper plane previously moved, giving the configuration of a large flat table with the whole plane thus doubled on the same. Level. This can be used in industrial applications in the sphere of the furniture industry.

Claims: Extendable table, having a structure made up of the sides (1) of the table with upper and lower guides along which at least one plane can move, characterized in that the table has two planes which in the retracted position are disposed one over the other, both being adapted to slide along the guides; the table comprising a channel portion (12) between said guides (4,5); in that the upper plane (2) comprises two pairs of rollers (7, 8) for horizontally moving along the upper guide (4) said movement being possible only to one side of the table, said pairs of rollers being laid out approximately at the centre and at one end of said upper plane, respectively, and functioning as stops for limiting displacement of said upper plane (4), said end being disposed adjacent the lower plane in the extended position; in that the lower plane (3) comprises a single pair of rollers (9) located at a distance approximately 1/7 from an end of said lower plane which in the extended position is adjacent the upper plane, said lower plane being moved by said rollers along a lower guide (5) and being lifted up to the level of the upper guide (4) along said channel (12), the latter being arranged out as continuation of a stop (13) for the movement of the lower plane (3); said lower plane being adapted to be lifted by hand by its other end after moving the single pair of roller (9) to the end of the lower guide (5), with a fixed roller (6) being provided to support the lower plane in the upper position. Extendable table, according to claim 1, characterized in that the side structures (1) have stops or limits for the movement of the lower plane laid out at the end (10) of the lower guide (5) and at the central part of same at a distance approximately 1/3 along its length.

Inventors: MARCO MUNTAGUD FRANCISCO, MARCO MUNTAGUD, FRANCISCO
Applicants: TRA IND, INDUSTRIAS TRA, S.L.
Application year: 1995
Main classification: A47B1
IPC codes: A47B1