Static structures (e.g. – buildings) – Module or panel having discrete edgewise or face-to-face... – Having integral key
Patent
1991-10-24
1994-10-25
Safavi, Michael
Static structures (e.g., buildings)
Module or panel having discrete edgewise or face-to-face...
Having integral key
52436, 525902, 525903, 525922, 403381, 403382, E04B 138
Patent
active
053577280
DESCRIPTION:
BRIEF SUMMARY
This invention relates to the jointing of panels or sheets, and is especially suited for the jointing of building panels or sheets made of timber, timber laminate (e.g. plywood), or particle board.
It is of course well known in carpentry to join together timber panels (including those formed of plywood and chipboard) by adhesively bonding together interlocking end portions of the panels so as to form the joint. Typical known joints between panels or planks include finger joints, tongue and groove joints, dowelled joints and dovetail joints. In the boat building industry, in particular the construction of the interior of a boat, it is important that the panel joints have a high degree of structural strength and the conventional jointing methods which have been used to achieve such strength have normally employed additional jointing elements, e.g. fastening cleats, to secure together the abutting edges of the building panels or sheets. However, such jointing methods have several disadvantages in that they are labour intensive and therefore of relatively high cost and in some cases are not able to produce a joint having a smooth surface finish.
It is an object of the present invention to provide an improved carpentry joint for joining together timber panels, sheets, planks or the like, which is simple, inexpensive and readily effected.
It is another object of the present invention to provide improved jointing between building panels or sheets which will allow a structure made up of the panels or sheets to be dry assembled and the panels subsequently adhesively bonded together whilst in an assembled condition.
It is a still further object of the present invention to provide improved jointing for building panels, sheets, planks and the like which enables the surfaces of the panels or sheets to be in a finished condition before their assembly and gluing together.
It is a still further object of the present invention to provide an improved building panel joint which will have high structural strength.
In the specification and accompanying claims, the term "timber" shall include solid timber, timber laminate, particle board and chip board, whilst the term "panel" shall include within its scope a sheet or plank.
According to one form of this invention therefore, there is provided improved means for joining together a pair of panels in edge to edge coplanar or angled relationship wherein the panels are provided with profiled edges comprising alternate tongue formations and recesses having a shape substantially complementary to said tongue formations, said tongue formations of one panel being receivable in the recesses of the other panel (and vice versa), wherein said profiled edges comprise integrally formed projections projecting from the edge surfaces of said tongue formations and/or from the walls forming said recesses, the tongue formations, recesses and projections being shaped and dimensioned such that said tongue formations form a friction fit with said recesses by virtue of the frictional engagement between said projections and either the edge surfaces of said tongue formations or the surfaces of said recess forming walls, the opposed facing surfaces of said tongue formations and said recess forming walls being spaced apart so as to form a gap of approximately consistent width which extends along the join between the panels, interrupted by said projections, said gap being fillable with adhesive.
Preferably the projections comprise nibs which, when formed on the tongue formations, project outwardly from the edge surfaces thereof and extend at right angles to the plane of the panel, or, if formed in the recesses, project outwardly from their walls, the depth of the nib corresponding approximately to the width of the gap formed between the tongued and recessed edges.
In a preferred embodiment of this invention, each of the profiled edge portions of the panels defines a "jigsaw" pattern comprising alternate tongue formations defined by curvilinear edge surfaces and complementary shaped recesses, each tongue form
REFERENCES:
patent: 1122350 (1914-12-01), Wysong
patent: 2004193 (1935-06-01), Cherry
patent: 2544983 (1951-03-01), Davis
patent: 2691242 (1954-10-01), Young
patent: 3422588 (1969-01-01), Stewart, Jr.
patent: 3442311 (1969-05-01), Rhyne
patent: 3499254 (1970-03-01), Jefferys
patent: 3692201 (1972-09-01), Garduna
patent: 4173287 (1979-11-01), Kumakawa
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