Woodworking – Process – Securing
Patent
1990-04-03
1991-03-26
Bray, W. Donald
Woodworking
Process
Securing
144345, 156254, 156264, B27D 100
Patent
active
050021052
ABSTRACT:
A process is described for making a laminated wood product having improved strength and dimensional stability (i.e., less warping caused by temperature and/or moisture change in drying, transportation and in use). Adjacent surfaces of lumber or veneer laminae cut from a single piece of wood are arranged in units of three laminae where the center lamina is twice the thickness of each outside lamina and in such a way that the outer laminae are rotated 180 degrees about their longitudinal axes to provide mirror images of the surfaces of the center lamina. These trios are arranged in a symmetrical manner about the central plane of the laminate and then bonded together. The minimum number of laminae is three, but with increments of three additional laminae the mirror-laminate can be built up to any desirable thickness. The mirror-laminate may be used in rough form or surfaced to specific finished dimensions. It is an improved value-added product which is stronger than a solid piece of wood of similar quality and size.
REFERENCES:
patent: 671467 (1901-04-01), Brown
patent: 2653890 (1953-09-01), Dosker
patent: 2772197 (1956-11-01), Kozdemba
patent: 3989078 (1976-11-01), Hasenwinkle
patent: 4262717 (1981-04-01), Kohn
Bray W. Donald
Edmundson Dean P.
Engineering Data Management, Inc.
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