Patent ID: 7266234

Claim:
Device to control the straightness and torsions of a long product ( 11 ), characterized in that it comprises at least two profile-detection optical devices ( 12 a , 12 b , 12 c ), each presenting a visual field ( 13 ) including at least a perimeter segment ( 18 a , 18 b , 18 c ) of the section of said product ( 11 ), said at least two devices ( 12 a , 12 b , 12 c ) being arranged adjacent and aligned along said product ( 11 ) and being oriented so as to detect homologous perimeter segments ( 18 a , 18 b , 18 c ) located on different planes, the device also comprising a command unit able to receive and compare with each other the section images detected at the same instant by said detection devices ( 12 a , 12 b , 12 c ) and to determine, according to said comparison, the lack of straightness and/or the presence of torsions in said product ( 11 ).