Filling system for electronic smoking devices

Patent metadata

Field	Value
Publication number	US-11208240-B2
Application number	US-202017127286-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Feb 12, 2016
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A filling system for an electronic cigarette (10) is disclosed in which a nozzle (38) of a liquid dispenser (80) contains a plunger (62) which is biased by a spring (60) into a closed position in which liquid is prevented from flowing through the nozzle (38). In use the nozzle (38) is inserted into an open end (42) of a liquid reservoir (34) for an electronic cigarette containing an air tube (32). The plunger (62) engages with the end of the air tube (32) blocking the air tube (32) and opening the liquid flow path through the nozzle (38). The arrangement of the plunger (62) and nozzle (38) is such that operation of the plunger (62) only occurs when the nozzle (38) engaged within a liquid reservoir (32). A membrane (96) can be provided to prevent leakage from the liquid reservoir (34) when the nozzle (38) is disengaged.

First claim

The invention claimed is:

1. A liquid supply system for an electronic smoking device comprising:
a liquid dispenser;
a nozzle; and
a liquid reservoir of the electronic smoking device;
wherein the nozzle comprises:
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 the liquid reservoir of the 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 liquid flow path through said nozzle into the liquid reservoir and away from the air tube,
wherein

an air vent is provided enabling air to vent from the liquid reservoir when the nozzle is in said engagement position within the opening within an electronic smoking device;
wherein the air tube for extracting vapour from the electronic smoking device is accessible via said opening; and
wherein a membrane having one or more slit valves is provided adjacent the end of the air tube accessible via said opening, wherein when said nozzle is in said engagement position, said membrane is caused to be deformed opening said slit valves and permitting liquid to flow into said liquid reservoir.

2. A liquid supply system in accordance with claim 1 , wherein said plunger comprises a sealing surface adapted to engage with and block the air tube of the electronic smoking device when the nozzle is in the engagement position, preventing liquid flowing via the liquid flow path through the nozzle from entering said air tube.

3. A liquid supply system in accordance with claim 1 , wherein a sealing member is mounted on said plunger, wherein said sealing member seals said liquid flow path when said plunger is in said closed position.

4. A liquid supply system in accordance with claim 1 , wherein a sealing member is mounted on said nozzle wherein said sealing member is configured to seal the opening.

5. A liquid supply system in accordance with claim 4 , wherein said nozzle is configured so that said sealing member seals the opening prior to the air tube of the electronic smoking device engaging with the plunger and moving the plunger into an open position.

6. A liquid supply system in accordance with claim 1 , wherein a screw thread, bayonet, magnetic, friction fit, push fit or other type of fitting is provided on said nozzle which matches a corresponding screw thread, bayonet, magnetic, friction fit, push fit or other type of fitting at the opening providing access to the liquid reservoir.

7. A liquid supply system in accordance with claim 6 , wherein the screw thread, bayonet, magnetic, friction fit, push fit or other type of fitting is positioned on said nozzle so that if the nozzle is attached to a device having a matching screw thread, bayonet, magnetic, friction fit, push fit or other type of fitting, said screw thread, bayonet, magnetic, friction fit, push fit or other type of fitting engage each other before the plunger engages with the air tube within said opening.

8. A liquid supply system in accordance with claim 1 , wherein said air vent is connected to a low pressure reservoir arranged to extract air from the liquid reservoir when said nozzle is in the engagement position.

9. A liquid supply system in accordance with claim 8 , wherein said low pressure reservoir is activated by movement of said plunger to extract air from the liquid reservoir when said plunger is in said open position.

10. A liquid supply system in accordance with claim 1 , wherein said plunger has an indentation operable to receive the air tube of an electronic cigarette when said nozzle is in the engagement position.

11. A liquid supply system in accordance with claim 1 , wherein said plunger is biased towards said closed position by a spring.

12. A liquid supply system in accordance with claim 1 , wherein movement of the plunger from said closed position to said open position compresses a resilient material, the compression of said resilient material biasing said plunger towards said closed position.

13. A liquid supply system in accordance with claim 1 , wherein movement of the plunger from said closed position to said open position stretches a resilient material attached to said plunger, the stretching of said resilient material biasing said plunger towards said closed position.

14. A liquid supply system for an electronic smoking device in accordance with claim 1 , wherein said opening is a mouthpiece port operable to receive a mouthpiece configured for extracting vapour via said air tube.

15. 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;
wherein said membrane is configured to be deformed to open said slit valves and permit liquid to flow into said central cavity.

16. A liquid reservoir in accordance with claim 15 , wherein said opening is a mouthpiece port operable to receive a mouthpiece configured for extracting vapour via said air tube.

17. A liquid reservoir in accordance with claim 16 , further comprising an atomizer operable when connected to power supply to atomize liquid stored in the liquid reservoir.

Assignees

• Fontem Holdings 1 Bv

Inventors

• Biel Stefan
• Senftleben Sebastian
• Rehders Thorben
• Daryani Neha
• Borkovec Vaclav

Classifications

• B65D47/32 Primary

  with means for venting · CPC title

• B65D71/502

  Coaxial connections · CPC title

• B65B3/06

  by gravity flow · CPC title

• A61M2209/045

  for filling, e.g. for filling reservoirs · CPC title

• B65D47/248

  the valve being opened or closed by imparting a motion to the valve stem (B65D47/244, B65D47/245 take precedence) · CPC title