Cigarette or cigar filter

Claim 1

A filter for cigarettes, cigarette holders, cigars, and tobacco pipes, comprising a. a first unit comprising an elongated outer tubular shell with outer and inner side walls and a closure at one end, and an inner, open-ended elongated tube extending through a substantial portion of said outer tubular shell and through said closure, the outer side wall of said inner tube being spaced from the inner wall of said outer tubular shell; b. a second unit comprising an inner and outer walled median elongated tube axially slidably positioned telescopically in spaced relationship between the inner side wall of said outer tubular shell and the outer side wall of said inner tube, said second unit having an open end at least slightly spaced inwardly in an axial direction from the closure of said outer tubular shell and a closure at the opposite end thereof, said opposite end of the median tube being spaced inwardly in an axial direction with respect to the open end of said inner tube, said second unit being formed from electrostatically charged polystyrene; c. the end of said median tube having a closure including an annular lip extending radially outwardly of the outer wall of said median tube and adapted to hold the walls of said median tube spaced from the inner wall of said outer tubular shell and the outer wall of said inner tube; d. means on said lip providing a plurality of relatively fine passages opening into the space between said outer tubular shell and said median tube; and e. means on the end of said median tube providing a plurality of relatively fine passages opening into the space between said median tube and said inner tube; f. the open end of said first unit extending beyond the closed end of said second unit and being tapered outwardly to receive the end of a tubular tobacco product.