Stock material or miscellaneous articles – Two dimensionally sectional layer – With frame – casing – or perimeter structure
Patent
1981-02-17
1982-11-23
Thibodeau, Paul J.
Stock material or miscellaneous articles
Two dimensionally sectional layer
With frame, casing, or perimeter structure
52578, 52594, 52595, 52631, 428 53, 428 54, 428 58, 428 83, 428174, 428192, 428920, B32B 304, B32B 306
Patent
active
043605532
ABSTRACT:
A rectangular sandwich panel comprises two skins with an insulating material, such as foam, sandwiched therebetween. Two spaced apart arms form a double tongue on each of two adjacent circumferential edges of the panel and a cooperable double groove is formed along the other two adjacent circumferential edges, whereby, without additional coupling means, the panel can be assembled on all sides by a tongue and groove connection with adjoining panels. At the corner of the panel, where two double tongues meet, the arms of the double tongues are cranked so that the spacing between the arms forming the double tongues is increased by the thickness of the arms, to accommodate the arms of double tongues of an adjoining panel.
REFERENCES:
patent: 4095388 (1978-06-01), Breault
patent: 4236366 (1980-12-01), Rijnders
Hunter Douglas International N.V.
Thibodeau Paul J.
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