B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 19/31 (2006.01) B27G 11/00 (2006.01) B27M 1/08 (2006.01)
Patent
CA 2254586
In accordance with one specific, exemplary embodiment of the invention, there isprovided an apparatus for continuously processing a wood product formed from lengths of wood strips assembled in face-to-face, laminated relationship with heat curable adhesive applied to adjacent contacting faces of the strips. The apparatus includes a continuous press comprising confronting members defining between them an elongated press zone extending in a longitudinal direction. The confronting members are adapted to apply pressure to the wood product in a transverse direction substantially normal to the faces of the assembled strips while advancing the wood product through the press zone. The apparatus further includes first and second parallel electrodes coextensive with at least a portion of the press zone, the first and second electrodes being separated by an interelectrode spacing and defining between them a curing zone. The first electrode is connectable to a source of RF energy and the second electrode is connectable to ground potential. To provide the required isolation of the RF field and prevent arcing and other losses of RF energy, the interelectrode spacing is less than the distance between the first electrode and any adjacent metallic members. The confronting members of the continuous press comprise first and second linear arrays of blocks made of electrically insulative material, each block having a first or front face adapted to engage the wood product, and a second or rear face opposite the first face. Drive elements, preferably in the form of the links of a steel chain, are coupled to the second faces of the blocks and are driven so as to move the linear arrays of blocks along the press zone. The blocks are disposed in side-by-side relationship with the sides of adjacent blocks in close proximity so that uniform pressure is applied across the laminated wood product along the entire length of the press zone so as to prevent localized separations from forming between laminations. In accordance with another aspect of the invention, there is provided a wooden pallet having parallel ends, parallel sides, a top deck for receiving a load and a bottom deck parallel with the top deck. The pallet further includes at least two continuous stringers between the top and bottom decks to maintain said decks in spaced relationship, the stringers extending longitudinally between the ends of the pallet and wherein each 22. stringer is constructed of continuous wood stock assembled from face laminated, glued scrap wood strips of random length. In accordance with another aspect of the present invention, at least one of the decks comprises a plurality of parallel, spaced apart boards extending transversely between the sides of the pallet and wherein each board is constructed of wood stock assembled from face laminated glued scrap wood strips of random length.
G-W Manufacturing Co. Inc.
Oyen Wiggs Green & Mutala Llp
LandOfFree
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