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Comminution process to produce precision wood particles of uniform size and shape with disrupted grain structure from wood chips

United States Patent

August 13, 2013
View the Complete Patent at the US Patent & Trademark Office
A process of comminution of wood chips (C) having a grain direction to produce a mixture of wood particles (P), wherein the wood chips are characterized by an average length dimension (L.sub.C) as measured substantially parallel to the grain, an average width dimension (W.sub.C) as measured normal to L.sub.C and aligned cross grain, and an average height dimension (H.sub.C) as measured normal to W.sub.C and L.sub.C, and wherein the comminution process comprises the step of feeding the wood chips in a direction of travel substantially randomly to the grain direction through a counter rotating pair of intermeshing arrays of cutting discs (D) arrayed axially perpendicular to the direction of wood chip travel, wherein the cutting discs have a uniform thickness (T.sub.D), and wherein at least one of L.sub.C, W.sub.C, and H.sub.C is greater than T.sub.D.
Dooley; James H. (Federal Way, WA), Lanning; David N. (Federal Way, WA)
Forest Concepts, LLC (Auburn, WA)
13/ 741,025
January 14, 2013
STATEMENT OF GOVERNMENT LICENSE RIGHTS This invention was made with government support by the Small Business Innovation Research program of the U.S. Department of Energy, Contract SC0002291. The government has certain rights in the invention.