US Patent 10028536 E-cigarette personal vaporizer

A portable, personal storage and carrying case for an e-liquid e-cigarette PV in which the case includes an electrical power source for re-charging a rechargeable battery in the PV; a user-replaceable reservoir for holding e-liquid; and an electrical or electronic pump adapted to transfer e-liquid from the reservoir to a chamber in the PV, the pump delivering a pre-defined or variable quantity of e-liquid from the reservoir; and in which the pump is a peristaltic pump.