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:
Mar. 13, 1984
Filed:
Mar. 14, 1979
Jean-Pierre Lebet, Montreux, CH;
Baumgartner Papiers S.A., Renens, CH;
Abstract
In apparatus for making transverse-flow cigarette filters, a rod of cellulose acetate impregnated with a plasticizing agent and having a porous covering is cut into sections each having a length of several filters. From the cutting station, the rod sections are fed longitudinally into longitudinal grooves in the periphery of a first revolving drum. The rod sections are then transferred into longitudinal grooves in the periphery of a second revolving drum having in such grooves projections for forming indentations in one side of the rod sections. While carried by the second revolving drum, the rod sections are engaged by a third revolving drum having on its periphery projections for forming longitudinally offset indentations in the opposite side of the rod sections. In another embodiment of the apparatus, the rod sections are received in transverse grooves in a conveyor belt, and are transferred in groups between opposed punches which form indentations in opposite sides of the rod sections.