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:
May. 09, 2000
Filed:
Nov. 23, 1998
Hauni Maschinenbau AG, Hamburg, DE;
Abstract
A tow of fibrous filter material for tobacco smoke is transported lengthwise through a so-called finger which is an elongated channel wherein the cross-sectional area of the tow is gradually reduced to that of the rod-like filler in the wrapper of a filter rod. The homogeneity of the tow is enhanced by introducing a compressed gas into longitudinally spaced apart gas admitting portions of the channel and by providing the channel with sets of openings for the evacuation of gas downstream of each gas admitting portion. The channel discharges a continuous homogenized tow into a wrapping mechanism wherein the tow is draped into a web of cigarette paper or the like, and the thus obtained filter rod is severed to yield a file of filter rod sections of unit length or multiple unit length.