E-CIGARETTE PERSONAL VAPORIZER

1 . A user-replaceable e-liquid cartridge that in use transfers e-liquid from a parent e-liquid reservoir in the cartridge to a separate child e-liquid reservoir in an e-liquid e-cigarette PV, the separate child reservoir, when in use, being connected to, and delivering e-liquid to, an atomizer in the e-cigarette PV.

2 . The user-replaceable e-liquid cartridge of claim 1 in which the volume of the parent reservoir is at least three times greater than the volume of the child reservoir.

3 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is not re-fellable in normal use and is a closed system.

4 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is push-fit insertable and does not require any unscrewing of the e-cigarette PV.

5 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge includes or interacts with a fluid transfer system adapted to transfer e-liquid from the parent reservoir to the child reservoir.

6 . The user-replaceable e-liquid cartridge of claim 1 in which the fluid transfer system, for each activation, such as a pumping stroke, transfers an amount of e-liquid equivalent to a single cigarette.

7 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge includes a micro-pump to transfer e-liquid from the parent reservoir to the child reservoir.

8 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is not part of a cartomiser or other unit that includes an atomizer.

9 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge engages with an e-liquid filling aperture positioned centrally along the long axis of the daughter reservoir to minimize any off-centre forces that could otherwise compromise e-liquid sealing.

10 . The user-replaceable e-liquid cartridge of claim 1 in which the fluid transfer system linking parent and child reservoirs includes a hollow tube or shaft that passes through a flexible seal that retains any drops of e-liquid.

11 . The user-replaceable e-liquid cartridge of claim 1 in which the fluid transfer system linking parent and child reservoirs includes a fluid trap and absorbent wicking to capture any fluid leakage.

12 . The user-replaceable e-liquid cartridge of claim 1 in which the child reservoir fills by moving relative to the parent reservoir to activate a pump or micro-pump.

13 . The user-replaceable e-liquid cartridge of claim 1 in which the child reservoir fills using a pump activated by being depressed and released.

14 . The user-replaceable e-liquid cartridge of claim 1 in which the child reservoir is in a device that can slide up and down relative to the parent reservoir.

15 . The user-replaceable e-liquid cartridge of claim 1 in which the child reservoir is filled from the parent reservoir until the pressure in the child reservoir equals the pressure in the parent reservoir.

16 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is not substantially deformable in normal use.

17 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge includes an overflow channel that enables excess e-liquid that is pumped from the cartridge but is not stored in the child reservoir to be captured and returned to the parent reservoir.

18 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is one of several cartridges that can be selected as desired by the user.

19 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge includes several compartments, each with a different e-liquid.

20 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge includes an RFID chip.

21 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is removable and replaceable in normal use.

22 . The user-replaceable e-liquid cartridge of claim 1 in which the cartridge is adapted to detect or infer, or permit detection or inference, of the level or quantity of e-liquid in the cartridge to enable a signal to be sent indicating that a replacement cartridge is needed.

23 . The user-replaceable e-liquid cartridge of claim 22 in which the signal is sent to a connected smartphone which in turn connects to an e-fulfillment platform.

24 . The user-replaceable e-liquid cartridge of claim 1 in which the parent reservoir contains nicotine equivalent to approximately one hundred cigarettes.

25 . The user-replaceable e-liquid cartridge of claim 1 in which the e-liquid includes nicotine and the PV is not a medicinal device but instead a device that in normal use replaces cigarettes, with the e-liquid being vapourised in the PV and the vapour inhaled to replicate or replace the experience of smoking a cigarette.

26 . The user-replaceable e-liquid cartridge of claim 1 in which the volume of the parent reservoir is no more than approximately 10 mL.

27 . The user-replaceable e-liquid cartridge of claim 1 in which the volume of the child reservoir is no more than approximately 2 mL.

28 . Method of replenishing e-liquid for an e-liquid personal vapouriser comprising the step of transferring e-liquid from a user-replaceable e-liquid cartridge to a child reservoir that, when in use, is connected to, and delivers e-liquid to, an atomizer in the e-cigarette PV.

29 . Method for sending a signal relating to the status of a user-replaceable e-liquid cartridge for an e-cigarette personal vapouriser, the method including the steps of:

(a) transferring e-liquid from the user-replaceable e-liquid cartridge to a child reservoir that is connected to, and delivers e-liquid to, an atomizer in the e-cigarette PV;

(b) automatically sending a signal requesting a replacement for that user-replaceable e-liquid cartridge to an e-fulfilment platform, either directly or via a connected smartphone.

30 . A portable personal e-cigarette personal vapourising system, the system including a user-replaceable e-liquid cartridge as defined in claim 1 .