Patents by Inventor Henry T. Ridings

Henry T. Ridings has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5568819
    Abstract: A cigarette includes a filter element including a carbon-containing paper or a paper containing molecular sieves. The paper contacts the filter material, such as cellulose acetate tow, within the filter element, either by circumscribing the filter material or by being gathered with non-carbon-containing filter material. The paper is useful as a plug wrap for a filter element. In several embodiments, longitudinal grooves are provided on the periphery of the filter element.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: October 29, 1996
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Jeffery S. Gentry, Karen M. Womble, Chandra K. Banerjee, Richard L. Blakley, Russell D. Barnes, Donald A. Calleson, Henry T. Ridings
  • Patent number: 5538020
    Abstract: Electrochemical heat sources, materials used to make electrochemical heat sources and methods of forming electrochemical heat sources are disclosed. The electrochemical heat sources includes at least two metallic agents capable of interacting electrochemically with one another, such as magnesium and iron or nickel. The metallic agents may be provided in a variety of forms, including a frozen melt, a bimetallic foil, wire of a first metal wrapped around strands of a different metal, and a mechanical alloy. The metallic agents may be in the form of a powder filling a straw, or small particles extruded with a binder or pressed to form a rod. The powder filled straw or rod may be placed in a heat chamber surrounded by tobacco in a smoking article. An electrolyte solution contacts the metallic agents in the heat chamber to initiate the electrochemical interaction, generating heat which in turn may be used to volatilize nicotine and flavor materials in the tobacco.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: July 23, 1996
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Ernest G. Farrier, Joseph J. Chiou, Richard L. Lehman, Chandra K. Banerjee, Henry T. Ridings, Andrew J. Sensabaugh, Jr.
  • Patent number: 5435326
    Abstract: A smoking article having a controlled yield of wet particulate matter and a method of making a smoking article with predetermined total and per puff yields of wet particulate matter. The smoking article has a tobacco rod connected to an air ventilated compound filter having two abutted filter segments, a rod end segment with a passage therethrough and a mouth end segment. The pressure drop of the abutment interface between the segments is selected to be in a range of from about 10 mm to about 100 mm water gauge. The total pressure drop of the filter including the interface and the amount of air dilution can be selected to provide a smoking article with a level per puff yield or a decreasing per puff yield.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: July 25, 1995
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Thomas L. Gentry, Russell D. Barnes, Richard L. Blakley, Charles R. Ashcraft, Juanilla M. Gwyn, James W. Pryor, Henry T. Ridings, Milly M. L. Wong
  • Patent number: 5392792
    Abstract: A cigarette includes a rod of smoking material, such as tobacco, to which is attached a mouthpiece that is substantially impervious to air and smoke except for an unfiltered axial bore or flow passage which extends through the mouthpiece. Unfiltered smoke flows from the rod to the interface between the rod and mouthpiece where it is substantially diluted with air and passes through the flow passage for delivery as unfiltered, air diluted smoke. The air dilution reduces the gas phase components of the unfiltered smoke thereby providing a smoother, better tasting cigarette.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: February 28, 1995
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Henry T. Ridings
  • Patent number: 5285798
    Abstract: A smoking article with an electrochemical heat source is disclosed. The non-combustion heat source includes at least two metallic agents capable of interacting electrochemically with one another, such as magnesium and iron or nickel. The metallic agents may be provided in a variety of forms, including a frozen melt, a bimetallic foil, wire of a first metal wrapped around strands of a different metal, and a mechanical alloy. The metallic agents may be in the form of a powder filling a straw, or small particles extruded with a binder or pressed to form a rod. Preferably, the heat source is self-extinguishing if ignited. The powder filled straw or rod may be placed in a heat chamber surrounded by tobacco. An electrolyte solution contacts the metallic agents in the heat chamber to initiate the electrochemical interaction, generating heat which in turn volatilizes the nicotine and flavor materials in the tobacco.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: February 15, 1994
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Joseph J. Chiou, Ernest G. Farrier, Thomas L. Gentry, Richard L. Lehman, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Michael D. Shannon
  • Patent number: 5105831
    Abstract: The present invention is directed to a smoking article which is capable of producing substantial quantities of aerosol, both initially and over the useful life of the product, without significant thermal degradation of the aerosol former and without the presence of substantial pyrolysis or incomplete combustion products.Preferred embodiments of the present smoking article comprises a short combustible carbonaceous fuel element, a short heat stable, preferably carbonaceous substrate bearing an aerosol forming substance and disposed longitudinally behind the fuel element, an efficient insulating means, and a relatively long mouthend piece. Preferably, the fuel element is provided with a plurality of longitudinally extending passageways which act to control the heat transferred from the burning fuel element to the aerosol generating means, thus preventing the thermal degradation of the aerosol former.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: April 21, 1992
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Michael D. Shannon
  • Patent number: 5076292
    Abstract: The present invention relates to a smoking article which produces an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products.The smoking article of the present invention provides an aerosol "smoke" which is chemically simple, consisting essentially of oxides of carbon, air, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amounts of other materials. The aerosol "smoke" has no significant mutagenic activity as measured by the Ames Test. In addition, the article may be made virtually ashless so that the user does not have to remove any ash during use.One embodiment of the present smoking article comprises a short combustible carbonaceous fuel element; a short heat stable, preferably carbonaceous substrate bearing an aerosol forming substance, and a relatively long mouthend piece.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: December 31, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Andrew J. Sensabaugh, Jr., Henry T. Ridings, John H. Reynolds, IV
  • Patent number: 5067499
    Abstract: The present invention relates to fuel elements useful in smoking articles which produce an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products.Preferred embodiments of the present invention comprise a short combustible carbonaceous fuel elements, usually less than about 20 mm in length, preferably from about 5 to 15 mm in length, and most preferably about 10 mm in length. The diameter of the fuel elements of the present invention generally is less than about 8 mm, preferably from about 3 to 7 mm, and most preferably from about 4 to 6 mm.Smoking articles utilizing the fuel elements of the present invention are capable of providing an aerosol "smoke" which is chemically simple, consisting essentially of air, oxides of carbon, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amounts of other materials.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: November 26, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Ernest G. Farrier, James L. Harris, Alan B. Norman, James L. Resce, John H. Reynolds, IV, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Michael D. Shannon, Gary R. Shelar
  • Patent number: 5042509
    Abstract: Making an aerosol generating cartridge useful for a smoking article is described. The method comprises filling a non-combustible elongated capsule, open at one end, with a substrate bearing an aersol forming material, and applying a fuel element to the open end of the capsule to enclose the substrate within the capsule.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: August 27, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Ernest G. Farrier, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Michael D. Shannon, Gary R. Shelar, Jack F. Clearman, Thomas L. Gentry
  • Patent number: 4955399
    Abstract: A cigarette provides tobacco flavor by heating tobacco, but not burning tobacco or any other material. A heat source which includes a metal oxide (e.g., calcium oxide), an anhydrous metal sulfate (e.g., magnesium sulfate), an inorganic salt and a sugar, generates heat upon contact of water therewith. The heat produced by the heat source heats tobacco in a heat exchange relationship therewith. Flavors volatilize from the tobacco and are drawn into the mouth of the user of the cigarette. Typical heat sources heat the tobacco to a temperature within 70.degree. C. to 200.degree. C. for 4 to 8 minutes.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: September 11, 1990
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Dennis L. Potter, Mark L. Raker, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Amos E. Westmoreland, Woods, Donna K., Chandra K. Banerjee
  • Patent number: 4941483
    Abstract: An aerosol delivery article provides flavor or a dose of a drug by heating a flavor or a drug, but not burning any material. A heat source which includes granular magnesium, granular iron, and finely divided cellulose generates heat upon contact thereof with an aqueous solution of potassium chloride. The heat source is in a heat exchange relationship with the flavor or drug. Heat generated by the heat source heats the flavor or drug in a controlled manner. The flavor or drug volatilizes and is drawn into the mouth of the user of the article. Typical heat sources heat the flavor or drug to a temperature within about 70.degree. C. to about 180.degree. C. for 4 to 8 minutes.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: July 17, 1990
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Henry T. Ridings, Chandra K. Banerjee
  • Patent number: 4938236
    Abstract: A cigarette provides tobacco flavor by heating tobacco, but not burning tobacco or any other material. A heat source which includes granular magnesium, granular iron, and finely divided cellulose generates heat upon contact thereof with an aqueous solution of potassium chloride. The heat source is in a heat exchange relationship with the tobacco. Heat generated by the heat source heats tobacco in a controlled manner. Flavors volatilize from the tobacco and are drawn from the cigarette and into the mouth of the smoker. Typical heat sources heat the tobacco to a temperature within about 70.degree. C. to about 180.degree. C. for 4 to 8 minutes.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: July 3, 1990
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Henry T. Ridings
  • Patent number: 4917119
    Abstract: A drug delivery article provides a dose of a volatilized drug by heating a drug carrying substrate, but not burning any material. A heat source which includes a metal oxide (e.g., calcium oxide), an anhydrous metal sulfate (e.g., magnesium sulfate), an inorganic salt and a sugar, generates heat upon contact of water therewith. The heat produced by the heat source heats the drug in a heat exchange relationship therewith. The drug volatilizes and is drawn into the mouth of the user of the article. Typical heat sources heat the drug to a temperature within 70.degree. C. to 200.degree. C. for 4 to 8 minutes.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: April 17, 1990
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Dennis L. Potter, Mark L. Raker, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Amos E. Westmoreland, Donna K. Woods, Chandra K. Banerjee
  • Patent number: 4913168
    Abstract: A flavor delivery article provides volatilized flavor by heating a flavor carrying substrate, but not burning any material. A heat source which includes a metal oxide (e.g., calcium oxide), an anhydrous metal sulfate (e.g., magnesium sulfate), an inorganic salt and a sugar, generates heat upon contact of water therewith. The heat produced by the heat source heats flavor in a heat exchange relationship therewith. Flavors volatilize and are drawn into the mouth of the user of the article. Typical heat sources heat the flavor to a temperature within 70.degree. C. to 200.degree. C. for 4 to 8 minutes.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: April 3, 1990
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Dennis L. Potter, Mark L. Raker, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Amos E. Westmoreland, Donna K. Woods, Chandra K. Banerjee
  • Patent number: 4854331
    Abstract: The present invention relates to a smoking article which produces an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products.Preferred embodiments of the present smoking article comprise a short combustible carbonaceous fuel element, a heat stable substrate bearing an aerosol forming substance, a heat conducting member which contacts a portion of the fuel element and the substrate, and an insulating jacket surrounding at least a portion of the fuel element.The smoking article of the present invention is capable of providing an aerosol "smoke" which is chemically simple, consisting essentially of air, oxides of carbon, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amount of other materials. The aerosol "smoke" from the preferred embodiments has no significant mutagenic activity as measured by the Ames Test.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: August 8, 1989
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Ernest G. Farrier, James L. Harris, Alan B. Norman, James L. Resce, John H. Reynolds, IV, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Michael D. Shannon, Gary R. Shelar
  • Patent number: 4793365
    Abstract: The present invention relates to a smoking article which produces an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products.The smoking article of the present invention provides an aerosol "smoke" which is chemically simple, consisting essentially of oxides of carbon, air, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amounts of other materials. The aerosol "smoke" has no significant mutagenic activity as measured by the Ames Test. In addition, the article may be made virtually ashless so that the user does not have to remove any ash during use.One embodiment of the present smoking article comprises a short combustible carbonaceous fuel element; a short heat stable, preferably carbonaceous substrate bearing an aerosol forming substance, and a relatively long mouthend piece.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: December 27, 1988
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Andrew J. Sensabaugh, Jr., Henry T. Ridings, John H. Reynolds, IV
  • Patent number: 4765347
    Abstract: A flavor delivery article produces an aerosol. The article includes an outer container in the form of a tube and an inner container disposed within the outer container. The inner container contains liquid such as an alcohol-water mixture, and a delivery means such as a tube. An airflow acceleration means is located near the output region of the delivery means such that airflow through the outer container can disperse the liquid from the delivery means into the airflow in aerosol form.
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: August 23, 1988
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Andrew J. Sensabaugh, Jr., Henry T. Ridings
  • Patent number: 4714082
    Abstract: The present invention relates to a smoking article, preferably in cigarette form, which produces an aerosol that resembles tobacco smoke. The article preferably comprises a short combustible fuel element having a density greater than 0.5 g/cc, a separate substrate bearing an aerosol forming material, a heat conducting member recessed from the lighting end of the fuel element, which preferably encloses the substrate, a resilient insulating jacket encircling at least a portion of the fuel element, and an optional tobacco jacket encircling at least a portion of the aerosol forming material.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: December 22, 1987
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chandra K. Banerjee, Ernest G. Farrier, John H. Reynolds, IV, Henry T. Ridings, Andrew J. Sensabaugh, Jr., Michael D. Shannon, Gary R. Shelar
  • Patent number: 4655229
    Abstract: A device for delivering flavor utilizing a flavor carrier in powdered form. A preferred embodiment of the system may resemble a conventional cigarette, and includes an overwrap defining a path of airflow through the device, a chamber containing particulate matter, and a means for entraining the particulate matter in the airflow. The overwrap may be a tube, resembling a conventional cigarette in appearance, feel, and draft. A means for entraining the particulate matter may be an intake flow limiter having a passage therein which causes a thin stream of high-velocity air to impinge upon the particulate matter, entraining it in the airflow. Alternately, the entraining means may be a series of baffles or similar components which produce a turbulent airflow, thus entraining the particulate matter. Output means are also provided for eliminating stoppages and for delivering the airflow, with particulate matter entrained therein, to the user.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: April 7, 1987
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Andrew J. Sensabaugh, Jr., Henry T. Ridings