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:
Aug. 10, 1982
Filed:
Feb. 25, 1981
Rudolph Muto, Andover, MA (US);
Other;
Abstract
A filter assembly for cigarettes and the like comprising an elongated tube with an axial bore, having a plurality of fan folded interior cross partitions each of oval outline, and extending in a plane oblique to the axis of the bore to form a succession of sealed chambers. The oval, obliqued, cross partitions have staggered perforations to allow the filtered substance to travel to the downstream end of the tube in an undulated path. At the upstream end of the tube the exterior wall of the first sealed chamber has a pattern of intake pin holes to allow fresh air to cool the smoke. At the downstream end of the tube the sealed chamber contains aromatic unburned tobacco for restoring and enriching the flavor of the smoke. The remaining chambers contain cotton batting to filter out undesirable substances such as tar.