Static structures (e.g. – buildings) – Processes – Assembling exposed modules
Patent
1997-09-10
1999-08-24
Friedman, Carl D.
Static structures (e.g., buildings)
Processes
Assembling exposed modules
5274711, 5274911, 52390, 524031, E04F 1502
Patent
active
059410477
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method of laying floors or like surfaces of desired material, which are supported by or themselves comprises rigid units in the form of boards or the like which are tongued and grooved on respective sides so as to enable mutually adjacent boards to be joined together. The invention also relates to floor-laying material for use when carrying out the method.
When applying the method for laying so-called hard floors with parquet boards or rigid sheets, such as laminated board or sheets, squares or blocks of desired material, the boards or corresponding elements are normally placed loosely on a sub-floor and then glued together with glue applied to the tongues so as to obtain a floating floor. The gluing procedure constitutes an additional time-consuming task and also means that the floor will be a permanent fixture, i.e. cannot be removed without first breaking-up the floor. A sheet of paperboard or plastic foam is laid over the sub-floor prior to laying the floor, as a means of damping impact sound.
There are many occasions when there is a need for temporary floors, for instance in the case of exhibitions, trade fairs and other organized events. Great savings could be made in such cases if it were possible to lay the floor without needing to join the various boards or the like permanently together. This would enable a floor to be readily lifted after a temporary event and reused on a later occasion. Such a floor could also be used conveniently in, e.g., rented apartments, so that the tenant of such an apartment could take the floor with him when moving out. Such a floor would have no detrimental effect on the remainder of the apartment.
A floating floor that has been loosely laid in the aforedescribed manner also eliminates the time and cost involved by the gluing procedure.
SUMMARY
A main object of the present invention is to provide a method of loosely laying floating floors. Another object of the invention is to provide floor-laying material for use when applying the method.
The invention is based on the realization that floor coverings or the like which in use are influenced by forces that have at least one force component that acts perpendicularly to the surface can be constructed of units which are loose in relation to one another, provided that when subjected to load there is sufficiently high friction between the loose units and the sub-floor to prevent lateral displacement of said units under load.
The object of the invention is achieved with a method of the kind defined in the introductory paragraph which is characterized by the steps of using boards that have a friction layer on the underside thereof, providing the underlying floor with a corresponding friction layer, and loosely laying the boards on the friction layer on the sub-floor and connecting the mutually adjacent boards solely through the medium of mutually coacting tongues and grooves in the absence of any binder.
The method enables a top floor to be laid very quickly and effectively, because it is not necessary to glue the boards together. A floor that has been laid in accordance with the invention can be removed very easily when so desired and relaid in another place.
The friction layer on the sub-floor is conveniently provided by laying-out plastic foil or some like carrier provided with a friction layer on.
Laying of a floorboard is suitably facilitated by placing on the friction layer on the sub-floor a thin flexible sheet, e.g. foil, that has a smooth surface and a size which at least corresponds to the size of the board, said foil or flexible sheet being removed only when the board concerned has been joined to adjacent boards through the mutual coaction of said tongues and grooves.
In a particularly preferred embodiment of the invention, there are used boards whose undersurfaces are provided with a friction layer that has been produced by flocking, wherein the sub-floor is covered with plastic foil or the like having a corresponding flocked friction layer.
It has been found that the thus treat
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Friedman Carl D.
Yip Winnie S.
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