Simulated cigarette

1. A simulated cigarette comprising:

a housing having a generally cigarette-like shape and size;

a reservoir of inhalable composition within the housing;

an actuator controlling the flow from the reservoir; and

an outlet passage from the actuator to an outlet in the housing from which outlet a user inhales the composition, wherein the housing adjacent to the outlet end has a deformable material at its outer periphery, wherein the deformable material is an elastomeric material configured to be deformable with respect to the outlet passage to change the flow characteristics from the outlet passage, and wherein the actuator is configured to enable actuation of the actuator without deforming the deformable material.

2. A simulated cigarette according to claim 1 , wherein the actuator is a breath-activated valve which is actuated by a flow of air through the housing in an actuation passage parallel to the flow through the outlet passage, and wherein the deformable material is positioned so that it is deformable into the housing to a position in which it affects the flow through at least one of the actuation passage and the outlet passage so as to affect the dosage of inhalable composition that a user receives from the cigarette.

3. A simulated cigarette according to claim 1 , wherein the deformable material is capable of generating heat.

4. A simulated cigarette according to claim 3 , wherein the deformable material contains liquid or gel which is supersaturated and which is arranged to come into contact with nucleation sites upon tapping of the cigarette, to form crystals and undergo an exothermic reaction.

5. A simulated cigarette according to claim 4 , wherein the deformable material comprises a plurality of compartments containing liquid or gel which are separately actuatable to produce an exothermic reaction.

6. A simulated cigarette according to claim 3 , wherein the deformable material is configured to direct the heat produced inwardly, so as to heat the inhalable composition in the outlet passage.

7. A simulated cigarette comprising:

a housing having a generally cigarette-like shape and size;

a reservoir of inhalable composition within the housing;

an actuator controlling the flow from the reservoir; and

an outlet passage from the actuator to an outlet in the housing from which outlet a user inhales the composition, wherein:

the housing adjacent to the outlet end has an elastomeric, deformable material at its outer periphery;

the actuator is a breath-activated valve which is actuated by a flow of air through the housing in an actuation passage parallel to the flow through the outlet passage; and

the deformable material is positioned so that it is deformable into the housing to a position in which it affects the flow through at least one of the actuation passage and the outlet passage so as to affect the dosage of inhalable composition that a user receives from the cigarette.

8. The simulated cigarette of claim 7 , wherein the deformable material is configured to be deformable with respect to the outlet passage to change the flow characteristics from the outlet passage.

9. The simulated cigarette of claim 7 , wherein the deformable material is capable of generating heat.

10. The simulated cigarette of claim 7 , wherein the deformable material contains liquid or gel which is supersaturated and which is arranged to come into contact with nucleation sites upon tapping of the cigarette, to form crystals and undergo an exothermic reaction.

11. The simulated cigarette of claim 7 , wherein the deformable material comprises a plurality of compartments containing liquid or gel which are separately actuatable to produce an exothermic reaction.

12. The simulated cigarette of claim 9 , wherein the deformable material is configured to direct the heat produced inwardly, so as to heat the inhalable composition in the outlet passage.

13. A simulated cigarette comprising:

a housing having a generally cigarette-like shape and size;

a reservoir of inhalable composition within the housing;

an actuator controlling the flow from the reservoir; and

an outlet passage from the actuator to an outlet in the housing from which outlet a user inhales the composition, wherein:

the housing adjacent to the outlet end has an elastomeric, deformable material at its outer periphery; and

the actuator is a breath-activated valve which is actuated by a flow of air through the housing in an actuation passage parallel to the flow through the outlet passage.

14. The simulated cigarette of claim 13 , wherein the deformable material is configured to be deformable with respect to the outlet passage to change the flow characteristics from the outlet passage.

15. The simulated cigarette of claim 13 , wherein the deformable material is capable of generating heat.

16. The simulated cigarette of claim 13 , wherein the deformable material contains liquid or gel which is supersaturated and which is arranged to come into contact with nucleation sites upon tapping of the cigarette, to form crystals and undergo an exothermic reaction.

17. The simulated cigarette of claim 13 , wherein the deformable material comprises a plurality of compartments containing liquid or gel which are separately actuatable to produce an exothermic reaction.

18. The simulated cigarette of claim 15 , wherein the deformable material is configured to direct the heat produced inwardly, so as to heat the inhalable composition in the outlet passage.

19. The simulated cigarette of claim 13 , wherein the deformable material is configured to be deformable with respect to the outlet passage to change the flow characteristics from the outlet passage.

20. The simulated cigarette of claim 13 , wherein the actuator is configured to enable actuation of the actuator without deforming the deformable material.