EP0018329B1 - Brett mit Nut und Feder, versehen mit eine Dilatation zulassenden Abstandselementen - Google Patents

Brett mit Nut und Feder, versehen mit eine Dilatation zulassenden Abstandselementen Download PDF

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Publication number
EP0018329B1
EP0018329B1 EP80810131A EP80810131A EP0018329B1 EP 0018329 B1 EP0018329 B1 EP 0018329B1 EP 80810131 A EP80810131 A EP 80810131A EP 80810131 A EP80810131 A EP 80810131A EP 0018329 B1 EP0018329 B1 EP 0018329B1
Authority
EP
European Patent Office
Prior art keywords
board
groove
projections
boards
rib
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80810131A
Other languages
English (en)
French (fr)
Other versions
EP0018329A1 (de
Inventor
Giovanni Boschetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT80810131T priority Critical patent/ATE1915T1/de
Publication of EP0018329A1 publication Critical patent/EP0018329A1/de
Application granted granted Critical
Publication of EP0018329B1 publication Critical patent/EP0018329B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/10—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of wood or with an outer layer of wood

Definitions

  • the US patent no. 3.987.599 discloses a tongue and groove board provided with a continuous rib or projection at the bottom of each groove, rib or projection which crushes during the swelling of the assembly to avoid the buckling thereof.
  • the tongue and groove board according to the present invention avoid said drawback.
  • Object of the present invention is a tongue and groove board having confronting surfaces when assembled with adjacent said boards, having on the bottom of the groove of each said board a rib formed out of the material of the board and permitting expansion of the adjacent board.
  • the tongue and groove board is characterised in that a plurality of projections are formed out of said rib, said projections being spaced part at their bases in the direction of the length of the board and being of such low mechanical resistance to compression that an assembly of the boards will expand by compressing said projections rather than by buckling, the interval between bases of the projections being greater than the length of the projections in the direction of the length of the board, said intervals having been formed by compression of the material of the rib between the projections.
  • said projections are of triangular cross sectional configuration.
  • the present invention solves therefore the problem of how to provide spacers between boards, without at the same time permitting the boards to buckle upon thermal expansion.
  • the material of the board itself at the bottom of the groove, first forming a continuous rib, and then compressing most of the total length of that rib to leave a plurality of spaced projections. Having pre-crushed most of the rib, the distances between the projections will be greater than the length of the projections (of course measured lengthwise of the board).
  • the present invention can make the continuous rib quite sturdy, and hence easily produced by ordinary woodworking operations, and then imparting to it the necessary crushing characteristics, by pre-crushing most of it, leaving spaced, uncrushed projections at a distance from each other greater than their length along the length of the board.
  • This pre-crushing operation can of course easily be accomplished by a simple rotary tool, and does not add excessively to the cost of production.
  • FIG. 1 there is shown a cross section of a board 1 of known type, generally of deal, commonly called “matchboard”, having a groove 2 extending lengthwise thereof along one edge and a tongue 3 extending lengthwise thereof along the other edge of the board.
  • groove 2 is deepened by means of a mill (not shown) modified for this purpose so as to form on the bottom 2' of the groove a continuous rib 4 which is preferably of triangular cross section.
  • Rib 4 is then flattened at spaced intervals with the disc 5 shown in Figure 4.
  • Disc 5 has peripheral cavities 6, 6', 6" but is otherwise of cylindrical cross-sectional configuration, these cavities being spaced apart by part cylindrical sections 5', 5" which serve to compress rib 4 along the lines 8', 8" shown in Figure 3, so as to leave projections 4', 4", 4"' spaced apart from each other a distance greater than the length of the projections.
  • most of rib 4 has been flattened by disc 5.
  • the projections 4', 4", etc. compress easily in view of their low mechanical resistance to compression, and space 7 closes.
  • the boards of the present invention can be not only of wood, but also of composites such as particle board or chip board or the like.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Finishing Walls (AREA)
  • Connection Of Plates (AREA)

Claims (2)

1. Brett mit Nut und Feder, welches im verbauten Zustand benachbarten Brettern (1, 1') gegenüberstehende Flächen aufweist, wobei am Grund (2') der Nut (2) jedes Brettes (1, 1') eine aus dem Material desselben geformte, eine Dilatation des benachbarten Brettes zulassende Rippe vorgesehen ist dadurch gekennzeichnet, daß aus der Rippe eine Mehrzahl von Vorsprüngen (4', 4", 4'") geformt ist, welche in Längsrichtung des Brettes (1, 1') mit ihren Grundflächen in Abständen voneinander liegen und einen derart geringen Widerstand gegen Zusammendrücken aufweisen, daß eine Dilatation zusammengebauter Bretter (1, 1') ein Zusammendrücken der Vorsprünge (4', 4", 4"'), aber kein Werfen der Bretter verursacht, daß der Zwischenraum zwischen den Grundflächen der Vorsprünge (4', 4", 4"') größer ist als die Länge jedes Vorsprunges in Längsrichtung des Brettes (1, 1') und daß die Zwischenräume durch Zusammendrücken des Materials der Rippe zwischen den Vorsprüngen (4', 4", 4"') gebildet sind.
2. Brett nach Anspruch 1, bei welchem die Vorsprünge (4', 4", 4"') dreieckigen Querschnitt aufweisen.
EP80810131A 1979-04-23 1980-04-18 Brett mit Nut und Feder, versehen mit eine Dilatation zulassenden Abstandselementen Expired EP0018329B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80810131T ATE1915T1 (de) 1979-04-23 1980-04-18 Brett mit nut und feder, versehen mit eine dilatation zulassenden abstandselementen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3819/79 1979-04-23
CH381979A CH633063A5 (it) 1979-04-23 1979-04-23 Procedimento per realizzare listelli destinati ad incastrarsi lateralmente con interspazi per le dilatazioni e listello realizzato col procedimento.

Publications (2)

Publication Number Publication Date
EP0018329A1 EP0018329A1 (de) 1980-10-29
EP0018329B1 true EP0018329B1 (de) 1982-12-01

Family

ID=4264142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80810131A Expired EP0018329B1 (de) 1979-04-23 1980-04-18 Brett mit Nut und Feder, versehen mit eine Dilatation zulassenden Abstandselementen

Country Status (5)

Country Link
EP (1) EP0018329B1 (de)
AT (1) ATE1915T1 (de)
CA (1) CA1131873A (de)
CH (1) CH633063A5 (de)
DE (1) DE3061198D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453352A (en) * 1982-08-18 1984-06-12 Kaiser Aluminum & Chemical Corporation Refractory brick with expansion allowance
DE3329640A1 (de) * 1983-08-17 1985-02-28 Kipptorbau Pfullendorf Gebhard Hügle GmbH & Co KG, 7798 Pfullendorf Holzschalung aus profilbrettern
NL1023678C2 (nl) * 2003-06-17 2004-12-20 E Van Zanten Holding B V Plantvoet.
DK2644478T3 (en) 2012-03-27 2018-08-13 Upm Plywood Oy PLYWOOD PANEL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2110729A (en) * 1933-01-03 1938-03-08 Certain Teed Prod Corp Construction material
US3987599A (en) * 1975-06-30 1976-10-26 Potlatch Corporation Wood paneling
FR2425306A1 (fr) * 1978-05-08 1979-12-07 Pasquet Roger Systeme permettant la dilatation des lambris chataignier

Also Published As

Publication number Publication date
DE3061198D1 (en) 1983-01-05
EP0018329A1 (de) 1980-10-29
CH633063A5 (it) 1982-11-15
CA1131873A (en) 1982-09-21
ATE1915T1 (de) 1982-12-15

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