Apparatus and method for identifying the position of defects in bodies, in particular in wooden bodies such as logs or planks
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United States of America Patent
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Nov 6, 2012
Grant Date -
Sep 9, 2010
app pub date -
Sep 2, 2009
filing date -
Sep 18, 2008
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Abstract
An apparatus for identifying the position of defects (100) in bodies (2), comprises feed means (3) for moving the body (3) along a feed direction (A), an emitter (5) designed to direct towards the body (2) a plurality of beams (6′, 6″, 6′″) of electromagnetic radiation lying in lying planes (P1, P2, P3) set at different angles to each other, and transversal to the feed direction (A), and a plurality of sensors (8′, 8″, 8′″) each facing the emitter (5) for receiving a respective beam (6′, 6″, 6′″) after the beam (6′, 6″, 6′″) has passed through the body (2). The lying planes (P1, P2, P3) are positioned one after another along the feed direction (A), allowing each portion of the body (2) to be struck by successive beams (6′, 6″, 6′″) as the body (2) is fed forward. A corresponding method is also claimed.
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