E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
E04F 15/02 (2006.01) E04F 15/04 (2006.01)
Patent
CA 2053697
The invention is directed to a tongue and groove product which comprises a first and second major surface and a first and second longitudinal edge. The first longi- tudinal edge includes means defining a longitudinally- extending groove. The second longitudinal edge includes a longitudinally-extending protruding tongue for inter- lockingly engaging a complimentary grooved longitudinal edge of an adjacent tongue and groove board. The protrud- ing tongue has an upper and a lower longitudinally- extending surface. The major design feature of this invention is that the protruding tongue has at least one substantially vertically-extending opening formed herein. Each of these openings extends through the protruding tongue from said longitudinally-extending upper surface to said longitudinally-extending lower surface for providing at least one drain path for water to drain by gravity from said first major surface downwardly through each said vertically-extending opening. This prevents an accumula- tion of water on the tongue and groove board. In the preferred case, the opening in the protruding tongue comprises a substantial vertically-extending notch.
Louisiana-Pacific Corporation
Oyen Wiggs Green & Mutala Llp
LandOfFree
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