Filling system for electronic smoking devices

A liquid supply system for an electronic smoking device comprising:

• a liquid dispenser;
• and
• a nozzle comprising:
• a housing defining a liquid flow path through the nozzle;
• and
• a plunger provided within the liquid flow path, the plunger being moveable between an open position in which liquid may flow through said liquid flow path and a closed position in which liquid flow through said liquid flow path is restricted wherein the plunger is biased towards said closed position;
• wherein nozzle and plunger are configured so that when the nozzle is inserted into an engagement position within an opening providing access to a liquid reservoir of an electronic smoking device which contains an air tube for extracting vapour from the electronic smoking device, the plunger engages with said air tube and is moved from said closed position to said open position, the plunger in said engagement position being such as to divert liquid flowing via the flow path through said nozzle into the liquid reservoir and away from the air tube.

A liquid reservoir for an electronic smoking device comprising:

• a body portion having a central cavity accessible via an opening;
• an air tube for extracting vapour from an electronic smoking device provided within said central cavity, accessible via said opening;
• and
• a membrane having one or more slit valves provided adjacent the end of the air tube accessible via said opening.

An electronic smoking device comprising:

• a power supply;
• a liquid reservoir comprising:
• a body portion having a central cavity accessible via an opening;
• and
• an air tube for extracting vapour from an electronic smoking device provided within said central cavity and accessible via said opening;
• a membrane having one or more slit valves provided adjacent the end of the air tube accessible via said opening;
• and
• an atomizer operable when connected to power supply to atomize liquid stored in the liquid reservoir.