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| Number | Title | Issue Date |
| 8114002 | Vertical filter filling machine and process Process and apparatus for the mass production of compound cigarette filters function to deposit granular filter material into the open ends of vertically oriented filter tubes. Predetermined amounts of diverse granular material are withdrawn by suction from sources ... | 02/14/2012 |
| 8047977 | Filter, smoking articles containing the same, filter strands and methods and devices for producing filters and smoking articles of this type The invention relates to a filter (10) for tobacco products with a first terminal filter element (12), a second terminal filter element (14), a middle filter element (16) which is located between first and second terminal filter element a... | 11/01/2011 |
| 7878963 | Smoking article with a restrictor A smoking article filter includes a flow restrictor and a cavity downstream of the flow restrictor. The flow restrictor includes an orifice or flow channel for directing smoke into the cavity. The filter is attached to the tobacco rod with tipping paper and includes... | 02/01/2011 |
| 7878962 | Cigarettes and filter subassemblies with squeezable flavor capsule and methods of manufacture Improved delivery of additive materials to cigarettes is provided through the use of one or more capsules containing additive materials, such as flavor components, in the filter section of a cigarette. The capsule or capsules are provided between first and second ab... | 02/01/2011 |
| 7806817 | Process for making filter tow A process for making a crimped tow of filaments suitable for forming a bale of crimped tow for conversion to cigarette filter rods comprising, presenting an uncrimped tow of filaments in a banded condition, adhesively bonding to the filaments of the banded tow (3... | 10/05/2010 |
| 7713184 | Vertical filter filling machine and process Process and apparatus for the mass production of compound cigarette filters function to deposit granular filter material into the open ends of vertically oriented filter tubes. Predetermined amounts of diverse granular material are withdrawn by suction from sources ... | 05/11/2010 |
| 7625328 | Method of production of a cigarette filter A filter for a cigarette has an organic filtering portion defined by granules or fibres of active carbon and housed inside a cylindrical shell of plastic material; the shell is located between a portion of cellulose acetate, which is engaged orally by a user, and a ... | 12/01/2009 |
| 7479099 | Vertical filter filling machine and process Process and apparatus for the mass production of compound cigarette filters function to deposit granular filter material into the open ends of vertically oriented filter tubes. Predetermined amounts of diverse granular material are withdrawn by suction from sources ... | 01/20/2009 |
| 7381175 | Compound filter rod making apparatus and process Machinery and process for continuously making a compound filter rod include a tow transport for continuously delivering an expanded fiber tow while compressing the tow as it travels in a downstream direction. At least one rotating pocket wheel has a plurality of spa... | 06/03/2008 |
| 7338421 | Method and a device for making filters for tobacco products Filters for tobacco products are manufactured by a device comprising a conveyor drum rotatable about a horizontal axis and furnished with peripheral grooves, each holding a leaf of paper material preassembled with a first filter element. The single groove is flanked... | 03/04/2008 |
| 7226404 | Cigarette filter assembly machine A cigarette filter assembly machine wherein a rolling unit is defined by a rolling drum and a guide drum coaxial with each other and connected to each other in angularly-fixed, axially-sliding manner; and wherein the rolling drum has a number of suction rollers (... | 06/05/2007 |
| 7123987 | Rod member receiving apparatus A receiving apparatus for a filter cigarette making machine comprises a rotatable catcher drum (2). The drum (2) has receiving grooves (6) in its outer circumferential surface, for each receiving a cigarette rod (CR). A rod (CR) received in the ... | 10/17/2006 |
| 7115085 | Method and apparatus for incorporating objects into cigarette filters Cigarette filter rods having individual objects positioned at predetermined intervals therein are prepared by transferring the individual objects from a rotating horizontal pan to a rotating vertical wheel and then depositing the object into a web of filter tow. Eac... | 10/03/2006 |
| 6908421 | Filter manufacturing machine A filter-manufacturing machine comprises spray nozzles located on both sides of a feeding path of sheet material made of filter fibers, respectively, and the spray nozzles each have a line of spray holes of a liquid binder with high viscosity and a plurality of air ... | 06/21/2005 |
| 6723033 | Method and apparatus for producing particle bearing filter rod A method and apparatus for delivering predetermined amounts of particulate material and/or plasticizer to a location remote from the particulate material, and a cigarette filter and a cigarette made according to the method and apparatus. ... | 04/20/2004 |
| 6701934 | Apparatus for making cigarettes with composite filters Double-filter cigarettes are produced by inserting different filter components between two rods of tobacco. This is attained by inserting filter components of different final lengths, obtained from separate supplies and processed along separate feed paths... | 03/09/2004 |
| 6656412 | Compaction system for particles in particle filled cavities of an article A method and apparatus for compacting particles or granules in discrete cavities spaced along an article or articles such as a cigarette filter rod moved underneath the compacting system. The compacting system can be provided with spaced lugs or other pro... | 12/02/2003 |
| 6595218 | Cigarette filter A cigarette filter having a reagent which chemically reacts with and removes a gaseous component of a smoke stream. The reagent contains functional groups covalently bonded to a non-volatile inorganic substrate which is incorporated in the filter. The fil... | 07/22/2003 |
| 6537186 | Process and apparatus for high-speed filling of composite cigarette filters A process of manufacturing composite filter stock is provided that includes several steps. In a first step, a paper carrier strip feeds along a conveyor. Along one edge of the carrier strip, the paper is folded back against itself. Fibrous filter segments... | 03/25/2003 |
| 6427699 | Method and apparatus for making cigarettes with composite filters Double-filter cigarettes are produced by inserting different filter components between two rods of tobacco. This is attained by inserting filter components of different final lengths, obtained from separate supplies and processed along separate feed paths... | 08/06/2002 |
| 6336896 | Automatic filter tip attaching machine An automatic filter tip attaching machine includes a mechanical structure moved by a computer program to automatically attach three filter tip stages a, b, c to cigarettes, with a chemical powder filled in the filter tip b to absorb nicotine and tar compl... | 01/08/2002 |
| 6202650 | Filter-tipped cigarette and filter for a cigarette A filter-tipped cigarette includes a tobacco portion having a tobacco material wrapped by a cigarette paper, and a filter portion which is connected to the tobacco portion. The filter portion has a filter body composed of a plurality of individual filter ... | 03/20/2001 |
| 5984851 | Grading device, used in manufacture of filter plugs for cigarettes A grading device includes an assembly drum with feeding grooves, and a grading drum arranged adjacent to the assembly drum and rotating in the opposite direction from that of the assembly drum at twice the peripheral speed. The grading drum has a pair of ... | 11/16/1999 |
| 5913311 | Cigarette filter and filter material therefor A filter material comprises a cellulose acetate fiber tow containing 5-50% by weight of a water soluble material and/or a water dispersible material which are soluble in a solvent which dissolves cellulose acetate and which are not compatible with cellulo... | 06/22/1999 |
| 5695441 | Filter plug feeding apparatus for a filter cigarette manufacturing machine A filter plug feeding apparatus comprises a pair of hoppers in which charcoal and plain filter rods are stored, a pair of hopper drums for delivering charcoal and plain filter rods from the hoppers, respectively, the hoppers being able to discharge the fi... | 12/09/1997 |
| 5613504 | Flavor generating article and method for making same A smoking article is provided in which a replaceable tobacco flavor unit containing tobacco flavor material is electrically heated by a set of permanent reusable heaters to evolve flavors or other components in vapor or aerosol form for delivery to a smok... | 03/25/1997 |
| 5542901 | Vacuum arrangement on combiner This invention relates to a method for delivering free-flowing material into discrete receiving spaces separating filter plugs in partially constructed cigarette filter assemblies. The method includes rapidly feeding a free-flowing material such as charco... | 08/06/1996 |
| 5234397 | Method of and apparatus for making composite filter rod sections for use in filter tipping machines A continuous tow of filamentary filter material is advanced past a rotary applicator which delivers metered but variable quantities of a second filter material (such as granulated or pulverulent charcoal) into successive increments of the tow. The tow and... | 08/10/1993 |
| 5199447 | Apparatus for high speed delivery of free flowing material This invention relates to two parallel belts with pockets suspended between them. This pockets device is used in a machine which delivers free flowing material into receiving spaces separating filter plugs, as said plugs travel on a garniture tape. The po... | 04/06/1993 |
| 5176606 | Laminated belt for filter rod making apparatus This invention relates to a laminated belt for use in a machine which delivers free flowing material into receiving spaces in between filter plugs. The belt of this invention is a lamination of a metal band and a composition strap perforated with a plural... | 01/05/1993 |
| 5012828 | Tobacco smoke filter containing particulate additive A tobacco smoke filter comprising a rod of tobacco smoke filtering material incorporating particulate additive, wherein at least some of the particulate additive is concentrated on one or a restricted number of threads and/or strips incorporated within th... | 05/07/1991 |
| 5012829 | Flavored cigarette filters, and methods and apparatus for making same A cigarette filter has a substantially cylindrical inner member of filter material surrounded by an outer member of filter material and a plugwrap. The density of the inner and outer members are typically different, and a flavorant is added to at least on... | 05/07/1991 |
| 5009239 | Selective delivery and retention of aldehyde and nicotine by-product from cigarette smoke A process for improving selective filter retention and pass through properties of cigarette filter elements by treating with polyethyleneimine modified to a predetermined pH range with one or more indicated water soluble organic acids, as a filter modifie... | 04/23/1991 |
| 4862905 | Rods containing pelletized material Cigarette filter rods having individual pellets positioned at predetermined intervals therein are prepared by cutting a strand of plasticized material into pellets which are then inserted into a web of filter tow. A wheel having a series of grooves is rot... | 09/05/1989 |
| 4841993 | Method of and machine for making filter cigarettes A mass-producing filter tipping machine wherein two coaxial plain cigarettes of unit length are simultaneously severed to yield pairs of coaxial plain cigarettes of unit length which are moved apart to provide spaces for filter mouthpieces of double unit ... | 06/27/1989 |
| 4770193 | Manufacture of tobacco smoke filters A smoke filter and a method for manufacturing the filter from a continuous multifilament filter tow are described in which a portion of the filter tow is treated with a dye to impart color to a discrete elongated zone of dye-treated filaments that is in s... | 09/13/1988 |
| 4763674 | Method and device for controlling hydrogen cyanide and nitric oxide concentrations in cigarette smoke Method for reducing normal concentrations of hydrogen cyanide and/or nitrogen oxide by-products in cigarette smoke, by using, as garniture feed for a cigarette filter rod-making apparatus, one or more substrates, one or more surfaces thereof being treated... | 08/16/1988 |
| 4756316 | Method for producing a cigarette filter rod A method for applying additives to a cigarette filter rod during its formation is disclosed. The additives are applied in the form of a liquid foam, allowing low application rates with uniform distribution. According to the method, it is not necessary to ... | 07/12/1988 |
| 4753250 | Process for producing tobacco filter to adsorb materials harmful to health, especially aldehydes in the smoke of tobacco A process for producing cigarette filters comprising a compound containing L-ascorbic acid and having the compound added to an adsorptional filter material in a quantity of 5-200% of the amount of said adsorptional filter.... | 06/28/1988 |
| 4648858 | Apparatus for manufacturing a cigarette filter tow An apparatus for manufacturing a filter rod having a hollow tube extending longitudinally through the filter rod. The apparatus includes a supply reel of hollow tubing, a supply of filter material web, and a garniture funnel into which the filter material... | 03/10/1987 |
