G - Physics – 01 – B
Patent
G - Physics
01
B
33/172, 340/123.
G01B 5/28 (2006.01) G01B 7/34 (2006.01) G01B 11/04 (2006.01) G01B 21/30 (2006.01)
Patent
CA 1109250
APPARATUS AND METHOD FOR MEASURING THE ROUGHNESS OF LUMBER ABSTRACT OF THE DISCLOSURE A method and an apparatus for automatically measuring the thickness and the roughness of elongated articles, such as wooden boards. The device comprises a housing having an opening therethrough to receive at least a portion of a board to be measured. At least one contact probe is provided in the housing and is biased against at least one surface of the board to sense irregularities in the flatness of the surface along a measured length thereof. A measuring circuit is connected to the contact probe to provide a measurement signal representative of the sensed irregularities and variations in thickness. A distance measuring device is also provided in the housing to measure the distance of displacement of the board with respect to the contact probe. An output display means indicates the desired measurements obtained. A computing means allows to compute mean, minimum and maximum thickness, to accumulate values for a group of boards and to extract statistical information. - 1 -
353047
Ahmad Mohammad
Baumans Hans W.
Le Dinh Chon T.
Pinheiro Victor
Tuck Julian S.w.
Canadian Patent & Development Limited
Swabey Ogilvy Renault
LandOfFree
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