News Column

Researchers Submit Patent Application, "Manufacturing Grooved Smoking Rods", for Approval

August 16, 2014



By a News Reporter-Staff News Editor at Investment Weekly News -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventor Kaljura, Karl (London, GB), filed on August 30, 2012, was made available online on July 31, 2014.

The patent's assignee is British American Tobacco (Investments) Limited.

News editors obtained the following quote from the background information supplied by the inventors: "Hitherto, machines have been used to form longitudinal peripheral grooves in filter segments used in cigarettes. One example is described in U.S. Pat. No. 4,492,238 in which a cylindrical rod is formed with longitudinally extending grooves arranged around the rod's circumference, formed by heated elements disposed around the periphery of the drum over which the filter rod is arranged to rotate."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "Described hereinafter is an embodiment of a machine for making grooved smoking article rods, comprising an axially rotatable drum having a generally cylindrical outer surface, a pressing member spaced from and extending around a portion of the outer surface of the drum, the pressing member having a pressing surface that includes grooves facing the outer surface of the drum, a heater configured to heat the pressing surface, and an inlet feed to supply smoking article rods between the outer surface of the drum and the pressing surface when heated by the heater so as to be rotated by the rotation of the drum over the grooves and impress a pattern of grooves into the rod.

"The pressing member may be configured to be retro-fitted to the rolling drum of apparatus for wrapping tipping paper around a smoking article such as cigarette, which has a rolling plate with a surface facing the drum for rolling tipping paper around the circumference of a filter segment and a coaxial rod of smokeable material. The retro-fittable pressing member may have a pressing surface that includes grooves to face the outer surface of the drum, a heater to heat the pressing surface, and a pressing member being so configured that smoking article rods passing between the outer surface of the drum and the pressing surface when heated by the heater are rotated by the rotation of the drum over the grooves to press the pattern of grooves into the rod.

"The pressing member may be configured to be retro-fitted in place of the rolling plate, spaced from and extending around the portion of the outer surface of the drum.

"Also described is a method a method of making grooved smoking article rods, comprising feeding smoking article rods between a generally cylindrical outer surface of an axially rotating drum and a heated pressing member spaced from and extending around a portion of the outer surface of the drum, the pressing member having a pressing surface that includes grooves facing the outer surface of the drum such that the rods are rotated by the rotation of the drum over the grooves and become impressed with a pattern of grooves corresponding to the grooves in the pressing surface.

BRIEF DESCRIPTION OF THE DRAWINGS

"In order that the invention may be more fully understood, an embodiment thereof will now be described by way of illustrative example, with reference to the accompanying drawings in which:

"FIG. 1 is a schematic side view of a machine for making grooved smoking article rods that comprise filter rods in this example;

"FIG. 2 is a schematic illustration of a filter rod prior to having grooves formed in its periphery by the machine of FIG. 1;

"FIG. 3 illustrates the filter rod of FIG. 2 after having been formed with grooves by the machine of FIG. 1;

"FIG. 4 is a perspective schematic illustration of a cigarette that includes a grooved filter made by the machine of FIG. 1;

"FIG. 5 is a longitudinal sectional view of another form of cigarette that utilises a grooved filter made by the machine of FIG. 1; and

"FIG. 6 is a partially exploded perspective view of the cigarette illustrated in FIG. 5."

For additional information on this patent application, see: Kaljura, Karl. Manufacturing Grooved Smoking Rods. Filed August 30, 2012 and posted July 31, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1962&p=40&f=G&l=50&d=PG01&S1=20140724.PD.&OS=PD/20140724&RS=PD/20140724

Keywords for this news article include: Investment and Finance, British American Tobacco (Investments) Limited.

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Source: Investment Weekly News


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