# US 2019/0166911 A1 · Micro-vaporizer with multiple liquids > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0166911 A1 - Document ID: US20190166911A1 - Status: Published application - Kind: A1 - Application number: 16/200,880 - Filed: 2018-11-27 - Published: 2019-06-06 - Earliest claimed: 2017-12-04 - Assignees: Avail Vapor LLC - Applicants: Avail Vapor, LLC - Inventors: Yongjie Xu; Donovan Phillips - Web page: https://patentgrep.com/patent/US20190166911A1 ## CPC - A24D 1/002: {with additives, e.g. for flavouring} - A24F 40/30: Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges - A24F 40/42: Cartridges or containers for inhalable precursors - A24F 40/44: Wicks - A24F 40/485: Valves; Apertures - F22B 1/284: {with water in reservoirs} - A24F 40/10: Devices using liquid inhalable precursors - A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - F22B: METHODS OF STEAM GENERATION; STEAM BOILERS ## Abstract A micro-vaporizer has an annular main body, a vaporization chamber, and a liquid delivery arrangement. The liquid delivery arrangement is configured for sequential delivery of a plurality of vaporizable liquids to the vaporization chamber. The liquid delivery arrangement has an annular wick having an internal wick surface defining at least a portion of the vaporization chamber. The liquid delivery arrangement also comprises a liquid reservoir surrounding the wick. The liquid reservoir is configured for storage of at least one vaporizable liquid therein and is in fluid communication with the wick. A heating element is positioned within the vaporization chamber for heating and vaporizing vaporizable liquid at or near the internal wick surface. ## Claims ### Claim 1 A micro-vaporizer comprising: an annular main body defining a main body interior; a vaporization chamber within the main body interior; a liquid delivery arrangement configured for sequential delivery of a plurality of vaporizable liquids to the vaporization chamber, the liquid delivery arrangement comprising an annular wick having an internal wick surface defining at least a portion of the vaporization chamber, a wick casing having a circumferential casing wall surrounding the annular wick, the casing wall having a liquid flow opening formed therethrough, and a liquid reservoir surrounding the wick casing and configured for storage of at least one vaporizable liquid therein, the liquid reservoir being in fluid communication with the wick via the liquid flow opening in the casing wall; a heating element disposed within the vaporization chamber, the heating element having a heating surface adjacent or in contact with at least a portion of the internal wick surface for heating and vaporizing vaporizable liquid at or near the internal wick surface; an air flow passage from one or more air intake openings in the case wall to the vaporization chamber, the air flow passage providing a path for air from an external ambient environment to flow into the vaporization chamber for mixing with vaporized liquid to form a vaporization mixture; and a vaporization mixture flow passage extending from the vaporization chamber to an exit port. ### Claim 2 (depends on 1) A micro-vaporizer according to claim 1, wherein at least one of the plurality of vaporizable liquids comprises at least one active material. ### Claim 3 (depends on 2) A micro-vaporizer according to claim 2, wherein the at least one active material includes at least one flavorant. ### Claim 4 (depends on 2) A micro-vaporizer according to claim 2, wherein the at least one active material includes one of the set consisting of marijuana, hemp, cannabidiol (cbd), citronella, geraniol, mint, thyme, tobacco, salvia dorrii, salvia, passiflora incarnata, arctostaphylos uva-ursi, lobelia inflata, lemon grass, cedar wood, clove, cinnamon, coumarin, helio, vanilla, menthol, eucalyptus, peppermint, rosemary, lavender, licorice, and cocoa. ### Claim 5 (depends on 1) A micro-vaporizer according to claim 1, wherein the plurality of vaporizable liquids includes a first vaporizable liquid comprising a first active material at a first concentration and a second vaporizable liquid comprising a second active material at a second concentration. ### Claim 6 (depends on 5) A micro-vaporizer according to claim 5, wherein the first active material is the same as the second active material but the first concentration is different from the second concentration. ### Claim 7 (depends on 1) A micro-vaporizer according to claim 1 further comprising: a first vaporizable liquid stored in the reservoir; and a second vaporizable liquid stored in the annular wick, wherein continued or repeated activation of the heating element causes the heating and vaporization of the second vaporizable liquid in the vaporization chamber, followed by transport of the first vaporizable liquid from the reservoir to the vaporization chamber, and heating and vaporization of the second vaporizable liquid. ### Claim 8 (depends on 1) A micro-vaporizer according to claim 1, wherein the liquid reservoir has a first reservoir chamber configured for receiving a first vaporizable liquid and a second reservoir chamber configured for receiving a second vaporizable liquid, the second reservoir chamber being positioned adjacent the liquid flow opening so as to provide fluid communication between the second reservoir chamber and the annular wick, and wherein the first reservoir chamber is divided from the second reservoir chamber by a permeable barrier configured to inhibit passage of the first vaporizable liquid from the first reservoir chamber to the second reservoir chamber so long as the second vaporizable fluid remains in contact with the barrier within the second reservoir chamber. ### Claim 9 (depends on 8) A micro-vaporizer according to claim 8 wherein the first vaporizable liquid has a first viscosity and the second vaporizable liquid has a second viscosity that is lower than the first viscosity. ### Claim 10 (depends on 8) A micro-vaporizer according to claim 8 wherein the permeable barrier comprises openings sized to preferentially inhibit passage of the first liquid relative to the second liquid. ### Claim 11 (depends on 10) A micro-vaporizer according to claim 10 wherein the permeable barrier comprises one of the set consisting of a mesh, a perforated membrane, and a porous fiber structure. ### Claim 12 (depends on 1) A micro-vaporizer according to claim 1, wherein the annular main body has a first body portion having a first cylindrical case wall and a second body portion having a second cylindrical case wall, the first and second body portions being configured so that one of the first and second body portions is telescopically receivable into the other, wherein the liquid reservoir has a first reservoir chamber defined by the first cylindrical case wall, a proximal reservoir wall, and a partition wall, the first reservoir chamber being configured for receiving a first vaporizable liquid, wherein the liquid reservoir has a second reservoir chamber defined by the second cylindrical case wall, a distal reservoir wall, and the partition wall, the second reservoir chamber being configured for receiving a first vaporizable liquid, and wherein the main body is movable between an extended configuration in which the second body portion extends away from the first body portion, the partition wall is spaced apart from the distal reservoir wall, and the second reservoir chamber is in fluid communication with the annularwick via the liquid flow opening and a retracted configuration in which one of the first and second body portions is received into the other, the partition wall is adjacent the distal reservoir wall, and the first reservoir chamber is in fluid communication with the annularwick via the liquid flow opening. ### Claim 13 (depends on 12) A micro-vaporizer according to claim 12, wherein the main body can only be moved into the retracted configuration when there is no liquid in the second reservoir chamber.