Smoking Article and Mouthpiece Therefor

1 . A smoking article comprising:

a smoking article rod portion having a recess; and

a mouthpiece attachable to the smoking article rod portion comprising an elongate cylindrical element arranged to be inserted into the recess by a user;

wherein the cylindrical element comprises an outer surface having at least one raised area, and the at least one raised area is arranged to engage with an inner surface of the recess to provide a resistance to the movement of the cylindrical element within the recess, and wherein the at least one raised area is arranged to provide a lower resistance to movement of the cylindrical element into the recess than out of the recess.

2 . A smoking article according to claim 1 , wherein the cylindrical element comprises:

adjacent first and second portions each extending partially along the length of the cylindrical element, the first portion being arranged to be inserted into the recess by a user; and

an annular element arranged around the second portion of the cylindrical element, the annular element having a larger external diameter than the internal diameter of the recess.

3 . A smoking article according to claim 2 , wherein the annular element comprises a wrapper forming at least part of the outer surface of the annular element.

4 . A smoking article according to claim 1 , wherein an internal diameter and/or length of the recess and an external diameter and/or length of the cylindrical element are arranged to substantially correspond such that at least a portion of the cylindrical element can be received within and substantially fill the recess.

5 . A smoking article according to claim 1 , wherein the cylindrical element comprises a smoke modifying additive.

6 . A smoking article according to claim 5 , wherein:

the smoke modifying additive is distributed throughout the cylindrical element and/or annular element;

wherein the smoke modifying additive is contained within at least one frangible capsule;

wherein the smoke modifying additive comprises a botanical additive;

wherein the smoke modifying additive comprises an adsorbent; and/or

wherein the additive is loaded on a thread extending through the cylindrical element and/or annular element.

7 . A smoking article according to claim 2 , wherein the annular element is attached to the cylindrical element using an adhesive.

8 . A smoking article according to claim 1 , wherein the cylindrical element comprises a wrapper forming at least part of the outer surface of the cylindrical element.

9 . A smoking article according to claim 1 , wherein the at least one raised area is formed by embossing an outer surface of the cylindrical element.

10 . A smoking article according to claim 1 , wherein the at least one raised area has a first section with a relatively steep incline as it rises away from the outer surface of the cylindrical element and a second section with a relatively shallow incline as it rises away from the outer surface of the cylindrical element, and wherein the second section is arranged to be forward of the first section as the cylindrical element is inserted into the recess.

11 . A smoking article according to claim 1 , wherein the at least one raised area has a first section and a second section, and wherein the first section has a wider circumferential extent than the second section, and wherein the second section is arranged to be forward of the first section as the cylindrical element is inserted into the recess.

12 . A smoking article according to claim 1 , wherein a body of the cylindrical element comprises fibrous filtration material.

13 . A smoking article according to claim 1 , wherein the at least one raised area comprises at least one circumferentially extending raised area configured to engage with an inner surface of the corresponding recess to prevent or restrict air flow between the inner surface of the corresponding recess and the outer surface of the cylindrical element.

14 . A smoking article according to claim 1 , wherein the cylindrical element further comprises an outer surface having at least one circumferentially extending raised area configured to engage with an inner surface of the corresponding recess to prevent or restrict air flow between the inner surface of the corresponding recess and the outer surface of the cylindrical element.

15 . A smoking article according to claim 14 , wherein the cylindrical element comprises a wrapper forming at least part of the outer surface of the cylindrical element, and wherein the at least one circumferentially extending raised area is formed by embossing the wrapper.

16 . A smoking article according to claim 14 , wherein the circumferentially extending raised area extends around substantially the whole circumference of the cylindrical element.

17 . A mouthpiece for attachment to a smoking article by a user, the mouthpiece comprising:

an elongate cylindrical element arranged to be inserted into a corresponding recess by a user, wherein the cylindrical element comprises an outer surface having at least one raised area, and the at least one raised area is arranged to engage with an inner surface of the recess to provide a resistance to the movement of the cylindrical element within the recess, and wherein the at least one raised area is arranged to provide a lower resistance to movement of the cylindrical element into the recess than out of the recess.

18 . A method for forming a mouthpiece according to claim 17 , comprising:

forming a wrapping material having the at least one raised area arranged thereon;

forming an elongate cylinder of filter material; and

wrapping the wrapping material around the elongate cylinder of filter material.