The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1977
Filed:
Mar. 10, 1975
Jean-Pierre Lebet, Montreux, CH;
Joel Ducommun, Chavannes, CH;
Baumgartner Papiers S.A., , CH;
Abstract
Faults in a composite filter rod being supplied to a sectioning device are detected optically by traversing the rod with a beam of light supplied along a first fiber bundle and taken up and delivered to photo-detector by a second fiber bundle. The ends of the cylindrical fiber bundles are held in the configuration of narrow homothetic rectangles transverse to the direction of feed of the rod, the width of the first bundle being approximately double that of the second bundle. The photo-detector controls elimination of faulty tips after sectioning; additional pairs of fiber bundles can be used to control synchronization of cutting with feed of the rod, and the correct succession of filter elements in the rod.