Static structures (e.g. – buildings) – Module or panel having discrete edgewise or face-to-face... – Having integral key
Patent
1997-07-18
2000-02-29
Friedman, Carl D.
Static structures (e.g., buildings)
Module or panel having discrete edgewise or face-to-face...
Having integral key
52392, 524031, 403354, E04B 500
Patent
active
060294167
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a system for tongue and groove jointing of adjacent pieces of flooring material.
The present invention also relates to a flooring material which is composed of a number of smaller pieces provided with tongues and grooves.
BACKGROUND ART
Flooring materials of the parquet floor type are previously known in the art as displaying surface coatings of, for example, veneer, laminate or the like on the upper and lower sides. The flooring material is in the form of tiles or elongate, relatively narrow strips which, in the central region seen in the cross sectional direction, have a panel or core forming layer often of wood or wood-based materials such as core-board, hardboard, chipboard, MDF board (medium density fiber board) or the like.
Along their edges, the pieces of such flooring material are provided with tongues and grooves (T&G) which are joined together when a floor is laid. In order to positionally fix the different pieces of the flooring material, glue is employed to a large extent, so that a large continuous sheet is formed of the flooring material which thereby covers a complete floor in one continuous unbroken piece or stratum.
The use of glue for jointing together smaller pieces of flooring material is time-consuming and involves risks that the surface coating layers, principally on the upper side of the material, be dirtied so that they become unusable or at least require cleaning.
PROBLEM STRUCTURE
The present invention has for its object to devise the system intimated by way of introduction such that it obviates the drawbacks inherent in older, prior art designs and constructions. In particular, the present invention has for its object to realise a system which eliminates the need for glue in jointing together of T&G on adjacent pieces of flooring material. Thus, the present invention relates to a system which permits adjacent pieces of flooring material quite simply to be slid together in order thereafter to be separable from one another only with great difficulty or using force. Finally, the present invention has for its object to realise a system which is simple and economical to produce.
SOLUTION
The objects forming the basis of the present invention will be attained if the system intimated by way of introduction is characterized in that at least one of the opposing surfaces on the tongues and grooves of the flooring pieces are provided with flocked surface portions.
The flocked surface portions display such length of individual fibers that these are bent on jointing together of two adjacent pieces of flooring material. The thus bent or curved fibers will hereby act as a very large number of barbs which must be bent or deformed in connection with the separation of the flooring material pieces from one another. Taken as a whole, these fibers generate extremely great cohesive forces.
Further advantages will be attained if the present invention is also given one or more of the characterizing features as set forth in appended claims 2 to 10.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The present invention will now be described in greater detail hereinbelow, with particular reference to the accompanying Drawings. In the accompanying Drawings:
FIG. 1 is a perspective partial view of a first embodiment of the present invention;
FIG. 2 is a view corresponding to that of FIG. 1 of a second embodiment of the present invention;
FIG. 3 is a view corresponding to that of FIG. 1 of a third embodiment of the present invention;
FIG. 4 is a view corresponding to that of FIG. 1 of a fourth embodiment of the present invention;
FIG. 5 is a view corresponding to that of FIG. 1 of a fifth embodiment of the present invention; and
FIG. 6 is a partial view, on a larger scale, of a jointing region between a groove and a tongue accommodated therein.
DESCRIPTION OF PREFERRED EMBODIMENTS
In FIG. 1, reference numerals 1 and 2 relate to two pieces of a flooring material in which a first piece 1 is provided with a groove 3 for jointing together with a corre
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Friedman Carl D.
Golvabia AB
Kang Timothy B.
LandOfFree
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