This invention relates to an extensible table with an improved extension mechanism.
Many current extensible tables split then separate the main top panel outwards then in one way or another replace the empty space created in the center with an extension leaf, thereby producing an extended table-top surface. One problem with this method is it involves a number of steps for the user, that is first separating the top panels, then engaging into operation the center extension leaf. Another problem is that this type of extension method does not allow for accessories that require static center portions such as pole umbrellas and the like.
Some inventions have tried to overcome this limitation by having a narrow static center top panel, and extension leafs that are engaged on both sides of this narrow center portion after the top panels on either side of this center panel have been moved away. While this method works, it is somewhat more complicated as it requires a mechanism to engage two extension leafs into place instead of just one.
Also known in the current state of the art are extensible tables with a stationary center top panel portion and foldable side panels as the extension mechanism. While these types of tables have the benefit of a stationary center portion, and are relatively less complex in terms of the mechanism, the foldable side panels require a higher degree of user input to engage the extension mechanism. Furthermore, the foldable side panels are cumbersome and need a relatively large clearance during the folding and unfolding operation. This design also typically has a lower structural integrity when extended.
Therefore, what is needed in the art is an extensible table of sturdy design that has a stationary center top panel portion with extension leafs on the side having an easy to operate extension mechanism requiring minimal user input.
A primary objective of the present invention is to provide an extensible table with a stationary center top panel portion.
Another objective of the present invention is to provide a user-friendly extension mechanism for a table that requires minimal use input.
The present invention is an extensible table that has a stationary top panel fixed to a main frame. A pair of slidable frames can be pulled away from the center of the table in a longitudinal direction and independently of each other. As each slidable frame is pulled away from the center, an extension leaf stored below the top panel slides out. When the extension leaf is fully clear of the top panel, the direction of motion of the slidable frame is reversed so that it moves towards the center of the table. This then causes the extension leaf to rise up to the same height as the top panel so that it sits flush with the top panel and a continuous table-top surface is formed. The magnitude of extension from its initial length is equal to the length of the extension leaf. To transform the table back to its initial size, each slidable frame is again pulled away from the center of the table, towing the extension leaf along with it. A guide rail located on the underside of the extension leaf drops it back to its initial height. The slidable frame is then pushed inwards again, so the extension leaf slides underneath the top panel.
In one embodiment of the present invention the extension mechanism comprises: a main frame having a stationary top panel, a lower frame providing support on a ground surface, and a pair of longitudinal side bars running along two opposing sides of main frame and located a distance below top panel; a sliding frame longitudinally slidable in relation to main frame having a pair of longitudinal side members and a cross member joining each of the side members at an outer end; an extension leaf with a pair of guide rails fixed to an underside, being able to move from an initial position whereby the extension leaf is stored underneath the stationary top panel, to an extended position whereby the extension leaf is located flush alongside the top panel thus creating a continuous table-top surface, and back to the initial position; a means of moving the extension leaf from the initial position to the extended position; and a means of moving the extension leaf from the extended position back to the initial position.
It should be noted that the following detailed description is directed to an extensible table and mechanism and is not limited to any particular size, shape or configuration of the table.
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The extension mechanism described here is for the extension of one side of the extensible table. In one embodiment of the present invention, there are two extension mechanisms located at opposing sides of the extensible table.
Similarly, it is understood that the extension mechanism may be used on any or all sides of the extensible table in any configuration.
While several particularly preferred embodiments of the present invention have been described and illustrated, it should now be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the invention as defined by the following claims.
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.