# US 2025/0151784 A1 · Multi-chamber mist generator for generating mist including nicotine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0151784 A1 - Document ID: US20250151784A1 - Status: Published application - Kind: A1 - Application number: 18/942,679 - Filed: 2024-11-09 - Published: 2025-05-15 - Earliest claimed: 2023-11-09 - Assignees: Shaheen Innovations Holding Limited - Applicants: Shaheen Innovations Holding Limited - Inventors: Mohammed Alshaiba Saleh Ghannam Almazrouei; Ahmed Mohamed Hussein Arbab; Abdullah Fahad Jikiron Jajurie; Sajid Bhatti - Web page: https://patentgrep.com/patent/US20250151784A1 ## CPC - A24F 40/05: Devices without heating means - A24F 40/10: Devices using liquid inhalable precursors - 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 - A24F 40/65: Devices with integrated communication means, e.g. wireless communication means - A61M 11/001: {Particle size control} - A61M 11/005: {using ultrasonics (spraying or atomising liquids using ultrasonic vibrations in general B05B17/06)} - A61M 15/0003: {with means for dispensing more than one drug} - A61M 15/0085: {using ultrasonics (spraying or atomising liquids using ultrasonic vibrations in general B05B17/06)} - A61M 15/06: Inhaling appliances shaped like cigars, cigarettes or pipes - B05B 17/06: using ultrasonic {or other kinds of} vibrations - B05B 17/0661: {Transducer materials} - B05B 17/0684: {Wicks or the like} - B06B 1/0207: {Driving circuits (specially adapted for particular applications, see the relevant subclass, e.g. G01; circuits for steering transducer arrays G10K11/34; basic circuits H03)} - B06B 1/06: operating with piezoelectric effect or with electrostriction (piezoelectric or electrostrictive devices per se H10N30/00) - A24F 40/51: Arrangement of sensors - A24F 40/53: Monitoring, e.g. fault detection - A61M 2016/0021: {with a proportional output signal, e.g. from a thermistor} - A61M 2016/0027: {pressure meter} - A61M 2202/0468: non-physiological - A61M 2202/30: Vaccines - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2205/3368: Temperature - A61M 2205/3592: using telemetric means, e.g. radio or optical transmission - A61M 2205/6018: providing set-up signals for the apparatus configuration - H02M 7/5387: in a bridge configuration - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - B06B: METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL (for particular applications, see the relevant subclasses, e.g. B07B1/40, B23Q17/12, B24B31/06; measurement of mechanical vibrations G01H; in direction finding, locating, distance or velocity measuring G01S; {generating seismic energy G01V1/02}; control of mechanical vibrations in general G05D; sound-producing devices, e.g. bells, sirens, whistles G10K, {e.g. methods or devices for transmitting, conducting, or directing sound in general G10K11/00}; generation of electrical oscillations H03B; electromechanical resonators in general H03H; electromechanical transducers {for communication techniques, e.g. microphones, speakers} H04R) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract A mist generator (500) for generating a mist for inhalation by a user. The mist generator (500) comprises a first liquid chamber (546) containing a first liquid, a second liquid chamber (547) containing a second liquid, a first ultrasonic transducer (505) including a planar first atomisation surface and a second ultrasonic transducer (506) including a planar second atomisation surface. The first ultrasonic transducer (505) is configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid and the second ultrasonic transducer (506) is configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid, wherein the first portion of the mist and the second portion of the mist combine to form the mist which flows through a mist outlet port (208) for inhalation by the user. ## Claims ### Claim 1 A mist generator for generating a mist for inhalation by a user, the mist generator comprising: an air inlet port; a mouthpiece including a mist outlet port; an air flow path from the air inlet port to the mist outlet port; a first liquid chamber containing a first liquid including nicotine; a second liquid chamber containing a second liquid; a first ultrasonic transducer including a first atomisation surface; a second ultrasonic transducer including a second atomisation surface; a transducer holder including a holder surface that is provided with a first recess and a second recess, wherein the first recess retains the first ultrasonic transducer with the first atomisation surface generally in a plane with the holder surface and the second recess retains the second ultrasonic transducer with the second atomisation surface generally in the plane with the holder surface; a first capillary which is absorbent, at least part of the first capillary being generally parallel with the plane and extending along the holder surface from the first liquid chamber to the first ultrasonic transducer, one part of the first capillary being superimposed on the holder surface and another part of the first capillary being in contact with at least a portion of the first atomisation surface, wherein the first capillary transports the first liquid by capillary action from the first liquid chamber to the first atomisation surface; and a second capillary which is absorbent, at least part of the second capillary being generally parallel with the plane and extending along the holder surface from the second liquid chamber to the second ultrasonic transducer, one part of the second capillary being superimposed on the holder surface and another part of the second capillary being in contact with at least a portion of the second atomisation surface, wherein the second capillary transports the second liquid by capillary action from the second liquid chamber to the second atomisation surface, the first ultrasonic transducer being configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid at the interface between the first capillary and the first ultrasonic transducer, and the second ultrasonic transducer being configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid at the interface between the second capillary and the second ultrasonic transducer, wherein the first portion of the mist and the second portion of the mist combine and flow out through the mist outlet port to the user when the user draws on the mouthpiece. ### Claim 2 (depends on 1) The mist generator of claim 1, wherein the transducer holder comprises: a first electrical contact channel which receives at least part of a first electrical contact, the first electrical contact extending from a first end of the transducer holder to the first transducer; and a second electrical contact channel which receives at least part of a second electrical contact, the second electrical contact extending from the first end of the transducer holder to the second transducer. ### Claim 3 (depends on 1) The mist generator of claim 1, wherein the first recess of the transducer holder is provided with a first through hole and the second recess of the transducer holder is provided with a second through hole, where a side of the first ultrasonic transducer is contactable through the first through hole and a side of the second ultrasonic transducer is contactable through the second through hole. ### Claim 4 (depends on 3) The mist generator of claim 3, wherein the mist generator comprises: a third electrical contact, part of the third electrical contact extending through the first through hole to contact the side of the first ultrasonic transducer; and a fourth electrical contact, part of the fourth electrical contact extending through the second through hole to contact the side of the second ultrasonic transducer. ### Claim 5 (depends on 1) The mist generator of claim 1, wherein the mist generator comprises: a plurality of assembly portions which are coupled to one another to form an air inlet port and an air flow path from the air inlet port to the mist outlet port, one assembly portion of the plurality of assembly portions comprising a mist outlet channel and at least a part of a mist outlet conduit. ### Claim 6 (depends on 5) The mist generator of claim 5, wherein the plurality of assembly portions include a first assembly portion, the first assembly portion including a first surface, a second surface, and two air inlet channels which extend along the first surface and to the second surface. ### Claim 7 (depends on 6) The mist generator of claim 6, wherein the first assembly portion includes the mist outlet channel and the at least a part of the mist outlet conduit. ### Claim 8 (depends on 6) The mist generator of claim 6, wherein the plurality of assembly portions include a second assembly portion, the second assembly portion including: an upper section; a lower section spaced from the upper section; and a middle section extending from the upper section to the lower section, the upper section including two sonication chamber recesses, two sonication chamber air inlets, two sonication chamber mist outlets; and the lower section including two channels, such that then the first assembly portion is coupled to the second assembly portion: the two air inlet channels of the first assembly portion and the two channels of the second assembly portion form an air flow path from the inlet port to the sonication chamber air inlets; and a mist flow path from the sonication chamber mist outlets through the mist outlet conduit. ### Claim 9 (depends on 6) The mist generator of claim 6, wherein the plurality of assembly portions includes a second assembly portion, the second assembly portion including: an upper section; a lower section spaced from the upper section; and a middle section extending from the upper section to the lower section, the upper section including two sonication chamber recesses, two sonication chamber air inlets, two sonication chamber mist outlets, and a groove; and the lower section including two channels, wherein the two air inlet channels of the first assembly portion and the two channels of the second assembly portion form an air flow path from the inlet port to the sonication chamber air inlets; and the at least a part of the mist outlet conduit of the first assembly portion and the groove of the upper section of the second assembly portion form a mist flow path from the sonication chamber mist outlets through the mist outlet conduit. ### Claim 10 (depends on 8) The mist generator of claim 8, wherein the upper section includes at least one biasing member within each recess for biasing the respective capillary against the portion of the respective atomisation surface. ### Claim 11 (depends on 8) The mist generator of claim 8, wherein the middle section of the second assembly portion includes two extrusions. ### Claim 12 (depends on 8) The mist generator of claim 8, wherein the plurality of assembly portions includes a third assembly portion, the third assembly portion including two through holes, the first liquid chamber, and second liquid chamber. ### Claim 13 (depends on 1) The mist generator of claim 1, further including two generally annular electrical connections, each of the two generally annular electrical connections coupled to a respective one of the first ultrasonic transducer and the second ultrasonic transducer. ### Claim 14 (depends on 8) The mist generator of claim 8, further including a fourth assembly portion which is at least partly superimposed on a portion of the transducer holder. ### Claim 15 (depends on 12) The mist generator of claim 12, wherein the third assembly portion includes two depressions, each depression overlapping a respective one of the two through holes in the third assembly portion. ### Claim 16 (depends on 1) The mist generator of claim 1, wherein the second liquid includes at least one flavouring. ### Claim 17 (depends on 1) The mist generator of claim 1, wherein the mist generator comprises: at least one further liquid chamber each containing a respective further liquid; at least one further ultrasonic transducer each including a respective further atomisation surface; at least one further capillary, at least part of the further capillary being generally parallel with the plane and extending along the holder surface from the respective further liquid chamber to the respective further ultrasonic transducer, one part of the respective further capillary being superimposed on the holder surface and another part of the respective further capillary being in contact with at least a portion of the respective further atomisation surface, wherein the respective further capillary transports the respective further liquid by capillary action from the respective further liquid chamber to the respective further atomisation surface, each further ultrasonic transducer being configured to generate and transmit ultrasonic waves to generate a respective further portion of the mist from the respective further liquid at the interface between the respective further capillary and the respective further ultrasonic transducer, wherein the respective further portion of the mist combines with the first portion of the mist and the second portion to form the mist which flows out through the mist outlet port to the user when the user draws on the mouthpiece. ### Claim 18 (depends on 17) The mist generator of claim 17, wherein each further liquid includes at least one flavouring. ### Claim 19 A mist generator for generating a mist for inhalation by a user, the mist generator comprising: an air inlet port; a mouthpiece including a mist outlet port; an air flow path from the air inlet port to the mist outlet port; a liquid chamber containing a liquid including nicotine; a first ultrasonic transducer including a first atomisation surface; a second ultrasonic transducer including a second atomisation surface; a transducer holder including a holder surface that is provided with a first recess and a second recess, wherein the first recess retains the first ultrasonic transducer with the first atomisation surface generally in a plane with the holder surface and the second recess retains the second ultrasonic transducer with the second atomisation surface generally in the plane with the holder surface; and a capillary which is absorbent, at least part of the capillary being generally parallel with the plane and extending along the holder surface from the liquid chamber to the first ultrasonic transducer and to the second ultrasonic transducer, a first portion of the capillary being superimposed on the holder surface, a second portion of the capillary being in contact with at least a portion of the first atomisation surface and a third portion of the capillary being in contact with at least a portion of the second atomisation surface, wherein the capillary transports the liquid by capillary action from the liquid chamber to the first atomisation surface and the second atomisation surface, the first ultrasonic transducer being configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the liquid at the interface between the second portion of the capillary and the first ultrasonic transducer, and the second ultrasonic transducer being configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the liquid at the interface between the third portion of the capillary and the second ultrasonic transducer, wherein the first portion of the mist and the second portion of the mist combine and flow out through the mist outlet port to the user when the user draws on the mouthpiece.