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US 4,848,375 AGranted
Filter cigarette
AssigneePhilip Morris Incorporated
InventorsGregorio I. Patron, Walter A. Nichols, Paul N. Gauvin, Francis M. Sprinkel, Jr.
Life of this patent
Estimating the term…
Abstract
A filter cigarette is provided in which the smoker can select different flavorants or filter media for interposition in the smoke stream. A filter segment having two flow paths, each containing different flavoring or filtering media, cooperates with one or two rotatable end caps having openings for selective registration with the flow paths, are used to select the desired flow path. A method of delivering "air-swept flavor" is also provided.
Claims34
A filter cigarette, comprising:
- a substantially cylindrical tobacco rod;
- a substantially cylindrical filter assembly;
- and
- tipping paper circumscribing and joining said filter assembly and said tobacco rod;
- wherein:
- said filter assembly comprises:
- a first filter assembly segment having a substantially cylindrical substantially smoke-impervious wall, a mouth end, a rod end, and two substantially semicylindrical fluid flow paths therethrough separated by barrier means, said barrier means being at least substantially smoke-impervious, at least one of said fluid flow paths containing a flavoring medium;
- and
- at least a second filter assembly segment abutting said mouth end of said first filter assembly segment and rotatable relative thereto for selectively directing fluid flow into a smoker's mouth through one of said fluid flow paths, and preventing fluid flow into said smoker's mouth from the other of said fluid flow paths, said second filter assembly segment being a substantially cylindrical cap of an at least substantially smoke-impervious material, said cap having an open end for fitting over said mouth end of said first filter assembly segment and having a substantially semicircular opening in the end opposite said open end for registration with one of said semicylindrical fluid flow paths.
6 more elements
A filter cigarette, comprising:
- a substantially cylindrical tobacco rod;
- a substantially cylindrical filter assembly;
- and
- tipping paper circumscribing and joining said filter assembly and said tobacco rod;
- wherein:
- said filter assembly comprises:
- a first filter assembly segment having a substantially cylindrical substantially smoke-impervious wall, a mouth end, a rod end, and two substantially semicylindrical fluid flow paths therethrough separated by barrier means, said barrier means being at least substantially smoke-impervious, at least one of said fluid flow paths containing a filter medium;
- and
- at least a second filter assembly segment abutting said mouth end of said first filter assembly segment and rotatable relative thereto for selectively directing fluid flow into a smoker's mouth through one of said fluid flow paths, and preventing fluid flow into said smoker's mouth from the other of said fluid flow paths, said second filter assembly segment being a substantially cylindrical hollow cap of an at least substantially smoke-impervious material, said cap having a mouth end and a rod end for fitting over said mouth end of said first filter assembly segment and being closed at its mouth end, and having a substantially semicircular opening in said closed mouth end for registration with one of said semicylindrical fluid flow paths.
6 more elements
A filter cigarette, comprising:
- a substantially cylindrical tobacco rod;
- a substantially cylindrical filter assembly;
- and
- tipping paper circumscribing and joining said filter assembly and said tobacco rod;
- wherein:
- said filter assembly comprises:
- a first filter assembly segment having a substantially cylindrical substantially smoke-impervious wall, a mouth end, a rod end, and two substantially semicylindrical fluid flow paths therethrough separated by barrier means, said barrier means being at least substantially smoke-impervious, one of said fluid flow paths containing a flavoring medium, one of said fluid flow paths being closed at the rod end thereof by closure means, said closure means being at least substantially smoke-impervious;
- and
- a second filter assembly segment abutting said mouth end of said first filter assembly segment and rotatable relative thereto for selectively directing fluid flow into a smoker's mouth through one of said fluid flow paths, and preventing fluid flow into said smoker's mouth from the other of said fluid flow paths.
6 more elements
A filter cigarette, comprising:
- a substantially cylindrical tobacco rod;
- a substantially cylindrical filter assembly;
- and
- tipping paper circumscribing and joining said filter assembly and said tobacco rod;
- wherein:
- said filter assembly comprises:
- a first filter assembly segment having a substantially cylindrical substantially smoke-impervious wall, a mouth end, a rod end, and two substantially semicylindrical fluid flow paths therethrough separated by barrier means, said barrier means being at least substantially smoke-impervious, one of said fluid flow paths containing a flavored filter medium, the other of said fluid flow paths containing an unflavored filter medium;
- a second filter assembly segment abutting said mouth end of said first filter assembly segment and rotatable relative thereto for selectively directing fluid flow into a smoker's mouth through one of said fluid flow paths, and preventing fluid flow into said smoker's mouth from the other of said fluid flow paths;
- and
- a third filter assembly segment adjacent said rod end of said first filter assembly segment for selectively directing smoke flow from said tobacco rod through one of said fluid flow paths, and excluding it from the other of said fluid flow paths, whereby:
- when said second and third filter assembly segments are rotated to select said flavored medium containing flow path flavored filtered smoke is delivered to said smoker's mouth;
- and
- when said second and third filter assembly segments are rotated to select said other flow path unflavored filtered smoke is delivered to said smoker's mouth.
10 more elements
Dependencies are inferred from the claim text.