Additional filter device for cigarettes with fiber filter

Abstract

Additional filter device for cigarettes with fiber filter to reduce the passage of tar into the smoker’s mouth, thus reducing toxicity due to the combustion of the paper/tobacco mixture of the cigarette. Includes a laminar cylindrical body coaxially located between two sections of the cigarette fiber filter. The longitudinal middle area of the cylindrical body houses a transverse laminar disc having three holes, through which the smoke generated by the tobacco combustion and wrapping paper passes. The holes of the disc are equidistant from each other and are placed in a triangular configuration. The proximal and distal ends of the cylindrical body have annular flaps, which separate the disc from the fiber filter sections, and formed between these flaps and the disc, respective first and second air chambers where a high percentage of toxic substances contained in the smoke generated during the combustion of tobacco and wrapping paper is retained.

1 . An additional filter device for cigarettes with fiber filter, comprising: a cylindrical laminar body ( 1 ) in which an inner mid-section ( 2 ) there is a transverse disc ( 3 ) with holes ( 4 ) for the passage of a smoke inhaled during combustion of a cigarette paper and tobacco, being opposite ends of the cylindrical body ( 1 ) finished by respective annular flaps ( 6 ), and having between the annular flaps ( 6 ) and a disc ( 3 ) respective first and second air chambers ( 7 ; 8 ). 
     
     
         2 . The filter device according to  claim 1 , wherein disk (3) has three equidistant holes ( 4 ) forming a triangular geometric configuration, wherein a geometric center of the imaginary triangle coincides with a longitudinal geometric axis of the body ( 1 ). 
     
     
         3 . The filter device according to  claim 1 , wherein these holes ( 4 ) are 0.4 mm in diameter. 
     
     
         4 . The filter device according to  claim 1 , wherein said first and second air chambers ( 7 ; 8 ) have a length of 2.5 mm each. 
     
     
         5 . The filter device according to  claim 1 , wherein said annular flaps ( 6 ) have a width of 1.5 mm. 
     
     
         6 . The filter Device according to  claim 1 , wherein the perimeter wall of the cylindrical body ( 1 ) has a thickness of 1 mm. 
     
     
         7 . The filter device according to  claim 1 , wherein said disc ( 3 ) has a thickness of 2 mm.