Telescopic Filter

Abstract

A vapour generating includes a main body having a first end and a second end opposite the first end, the body arranged to contain a solid vapour generating material; a filter having a mouthpiece end and an attachment end opposite the mouthpiece end, the attachment end arranged to be attached to the first end of the main body; and an airflow passageway within the filter configured to allow a vapour to flow into the filter through the attachment end from the first end of the body and out of the filter through the mouthpiece end. The filter includes an adjuster configured to adjust the length of the airflow passageway.

1 . A vapour generating article comprising:
 a main body having a first end and a second end opposite the first end, the body arranged to contain a solid vapour generating material;   a filter comprising a mouthpiece end and an attachment end opposite the mouthpiece end, the attachment end arranged to be attached to the first end of the main body; and   an airflow passageway within the filter configured to allow a vapour to flow into the filter through the attachment end from the first end of the body and out of the filter through the mouthpiece end;   wherein the filter comprises an adjuster configured to adjust the effective length of the filter such that the length of the airflow passageway within the filter is adjusted.   
     
     
         2 . The vapour generating article according to  claim 1 , wherein the adjuster comprises an inner sleeve portion and an outer sleeve potion and wherein movement of the outer sleeve portion relative to the inner sleeve portion adjusts the length of the airflow passageway. 
     
     
         3 . The vapour generating article according to  claim 1 , wherein the adjuster is configured to increase the length of the airflow passageway by moving the outer sleeve portion away from the inner sleeve potion. 
     
     
         4 . The vapour generating article according to  claim 1 , wherein the adjuster is configured to decrease the length of the airflow passageway by moving the outer sleeve portion towards the inner sleeve potion. 
     
     
         5 . The vapour generating article according to  claim 1 , wherein the outer sleeve portion is arranged to receive the inner sleeve portion. 
     
     
         6 . The vapour generating article according to  claim 1 , wherein the filter is made of plastic. 
     
     
         7 . The vapour generating article according to  claim 1 , wherein the attachment end of the filter is releasably attachable to the first end of the main body. 
     
     
         8 . The vapour generating article according to  claim 1 , wherein the adjuster comprises a fixed element and a rotatable element configured to rotate relative to the fixed element, wherein rotation of the rotatable element adjusts the length of the airflow passageway. 
     
     
         9 . The vapour generating article according to  claim 8 , wherein the rotatable element comprises a helical element. 
     
     
         10 . The vapour generating article according to  claim 9 , wherein rotation of the helical element in a first direction causes the length of the airflow passageway to increase and wherein rotation of the helical element in a second direction causes the length of the airflow passageway to decrease. 
     
     
         11 . The vapour generating article according to  claim 8 , wherein the rotatable element is made of paper. 
     
     
         12 . The vapour generating article according to  claim 1 , wherein the main body comprises a substrate portion forming a distal end of the vapour generating article, the substrate portion arranged to contain solid vapour generating material such as tobacco. 
     
     
         13 . The vapour generating article according to  claim 1 , wherein the main body comprises a cooling region located between the filter and the substrate portion, the cooling region configured to allow vapour generated in the substrate portion to cool before the vapour flows out of the first end of the main body and into the filter. 
     
     
         14 . The vapour generating article of  claim 13 , wherein the vapour cooling region comprises a hollow chamber. 
     
     
         15 . A vapour generating system comprising:
 a vapour generating article according to  claim 1 ; and   a vapour generating device configured to receive the vapour generating article and generate a vapour from the vapour generating material.