Abstract:
A smoking article (10) having a tobacco rod (20), which is adapted to produce mainstream smoke, and a filter (40) attached to said tobacco rod (20). A permeable wrapping paper (30) circumscribes the tobacco rod (20) and the filter (40). The filter (40) has an upstream end portion (42) and a downstream end portion (46), and includes a flow restricting segment (44) of smoke impermeable material, which includes at least one open flow passage (130) therethrough to deliver mainstream smoke, and a cavity (146) downstream of the flow restricting segment (44). The smoking article (10) also includes at least one ventilation zone (60) upstream of the flow restricting segment (44).
Abstract:
Mixed metal oxide catalysts are prepared by combining first nanoscale particles and second nanoscale particles to form a mixture of nanoscale particles and then the mixture is heated to form a mixed metal oxide catalyst. The mixed metal oxide catalysts, which are capable of reducing the concentration of carbon monoxide in the mainstream smoke of a cigarette during smoking, are incorporated into a smoking article component such as tobacco cut filler, cigarette paper and/or cigarette filter material.
Abstract:
A metallic alloy composition is manufactured into products such as press formed or stamped products or rolled products such as sheet, strip, rod, wire or band by one or more cold working steps with intermediate or final flash annealing. The method can include cold rolling an iron, nickel or titanium aluminide alloy and annealing the cold worked product in a furnace by infrared heating. The flash annealing is preferably carried out by rapidly heating the cold worked product to an elevated temperature for less than one minute. The flash annealing is effective to reduce surface hardness of the cold worked product sufficiently to allow further cold working. The product to be cold worked can be prepared by casting the alloy or by a powder metallurgical technique such as tape casting a mixture of metal powder and a binder, roll compacting a mixture of the powder and a binder or plasma spraying the powder onto a substrate. In the case of tape casting or roll compaction, the initial powder product can be heated to a temperature sufficient to remove volatile components. The method can be used to form a cold rolled sheet which is formed into an electrical resistance heating element capable of heating to 900 DEG C in less than 1 second when a voltage up to 10 volts and up to 6 amps is passed through the heating element.
Abstract:
A cigarette (23) comprises a tobacco rod having filled and unfilled portions arranged so that electrical heater elements (37) may overlap both portions. The rod includes a tubular tobacco web. The web is constructed by converting tobacco feedstock into a continuous sheet of tobacco web and converting the continuous sheet of tobacco web into one or ore bobbins of tobacco web suitable for automated manufacture of cigarettes. A heater (25) comprises a supporting hub and electrically resistive heater blades (37) defining a receptacle (27) for an inserted cigarette (23). Each blade comprises first and second heater blade legs each having a first end and a second end, and a connecting section connecting the second end of the first leg and the first end of the second leg. The blades (37) are heated by a resistive heating circuit and heat the inserted cigarette (23). The legs are separated by a gap to permit entrainment of flavour substances upon drawing.
Abstract:
Methods and apparatuses for cleaning an electrical lighter are provided. A sleeve, e.g., ceramic or metal, surrounds the heater fixture, and a resistive heating element (210) is in thermal proximity with the sleev e. The resistive heating element {210) is either a dedicated element or the cigarette heating elements (210). The sleeve serves as an aerosol barrier and condensate accumulator to protect other components. Periodically, e.g., substantially contemporaneously with a batte ry recharge, the heating element (210) is activated to thermally liberate condensates deposited on the sleeve during smoking and also heats, and thereby cleans, other components. Also, a cleaning element is optionally inserted into the cigarette receptacle of the electrical light er or placed at the exit thereof to absorb, attract and/or catalytically break down the thermally liberated condensates. The sleeve also directs a desired flow path for drawn air within an electrical lighter toward the cigarette.
Abstract:
In the present invention, there is disclosed an electrical heater for use in a smoking article having a source of electrical energy for heating tobacco flavor medium, the heater comprising: a) a substrate layer (300) of electrically conducting material; b) an electrically insulating layer (310) deposited on at least a portion of said substrate layer (300); and c) an electrically resistive heater element (122) deposited on said electrically insulating layer (310). A first end of said heater element (122) is electrically connected to said electrically conducting substrate (300), wherein a second end of said heater element (122) and a portion of said heater element (122) between the first and second ends of said heater element (122) are electrically insulated from said electrically conducting substrate layer (300) by said electrically insulating layer (310). Said substrate layer (300) and said second end of said heater element (122) are adapted to be electrically connected to the source (37) of electrical energy to heat said heating element (122). A process for producing the above-described electrical heater comprises the following steps: 1) providing an electrically conducting material; 2) forming (a) a plurality of blades from the electrically conducting material having gaps therebetween, and (b) a common end section, the blades extending from the common end section; 3) forming an electrical insulating layer (310) on at least one of the plurality of electrically conducting blades; 4) forming an electrically resistive heater on the formed electrical insulating layer (310) in such a manner that a first end of the heater is in electrical contact with the at least one electrically conducting blade; 5) forming an electrical contact on a second end of the formed heater; and 6) placing the plurality of blades and the common end section into a cylindrical receptacle to receive an inserted cigarette (23).
Abstract:
A novel electrical smoking system and method of establishing resistance to draw upon a cigarette while smoking a cigarette in an electrical smoking system comprising the step of operatively interposing a frit between a source of ambient air and the cigarette.
Abstract:
A removable cigarette (224') is manufactured for use in a smoking system which includes a lighter which has electrical heating means disposed in permanent cavity for delivering a flavored tobacco response to a smoker. To manufacture the cigarette a carrier web (259') is provided which has regions (261) of tobacco flavor material. Adhesive regions (261A) are applied from an adhesive applying station (327) to the surface of the carrier web (259') to form spaced regions of adhesive (261A) in between spaced regions of flavor material (261). A filter station (329) attaches filters (333,335) to the adhesive regions (261A) and a wrapping station (337) wraps the web (259') around the filters (333,335) to form a continuous rod of alternating regions of filter and tobacco flavor material. Finally, individual removable cigarettes (224') are formed by severing the continuous rod at a severing station (339).
Abstract:
A cigarette (23) comprises a tobacco rod having filled and unfilled portions arranged so that electrical heater elements (31) may overlap both portions. The rod includes a tubular tobacco web. The web is constructed by converting tobacco feedstock into a continuous sheet of tobacco web and converting the continuous sheet of tobacco web into one or ore bobbins of tobacco web suitable for automated manufacture of cigarettes. A heater (25) comprises a supporting hub and electrically resistive heater blades (37) defining a receptacle (27) for an inserted cigarette (23). Each blade comprises first and second heater blade legs each having a first end and a second end, and a connecting section connecting the second end of the first leg and the first end of the second leg. The blades (37) are heated by a resistive heating circuit and heat the inserted cigarette (23). The legs are separated by a gap to permit entrainment of flavour substances upon drawing.