# US 2022/0030951 A1 · Mouthpiece with inner and outer tubular sections > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0030951 A1 - Document ID: US20220030951A1 - Status: Published application - Kind: A1 - Application number: 17/298,814 - Filed: 2019-12-04 - Published: 2022-02-03 - Earliest claimed: 2018-12-06 - Assignees: Philip Morris Products S.A. - Applicants: Philip Morris Products S.A. - Inventors: Frederic LAVANCHY; Johannes Petrus Maria PIJNENBURG - Web page: https://patentgrep.com/patent/US20220030951A1 ## CPC - A24F 40/485: Valves; Apertures - A61M 15/06: Inhaling appliances shaped like cigars, cigarettes or pipes - A24D 3/17: Filters specially adapted for simulated smoking devices - A24F 7/00: Mouthpieces for pipes; Mouthpieces for cigar or cigarette holders - A61M 15/0021: {Mouthpieces therefor} - A24F 40/20: Devices using solid inhalable precursors - A61M 11/042: {electrical} - A61M 2205/3653: by Joule effect, i.e. electric resistance - A61M 2205/75: with filters - 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)} - A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES ## Abstract A mouthpiece for attachment to a hollow tubular filter portion of an aerosol-generating article is provided, the mouthpiece including: an inner tubular section having a minimum outer diameter, which is smaller than an inner diameter of the hollow tubular filter portion; an outer tubular section having a maximum inner diameter, which is larger than an outer diameter of the aerosol-generating article; a central airflow channel arranged along a longitudinal axis of the mouthpiece, the airflow channel including a Venturi portion, the Venturi portion including an inlet portion and an outlet portion, the inlet portion being configured to converge in a downstream direction and the outlet portion being configured to diverge in a downstream direction; and a hinge section configured to attach the mouthpiece to an aerosol-generating device. A system including the mouthpiece, and a method for attaching the mouthpiece to the hollow tubular filter portion are also provided. ## Claims ### Claim at position 1 -13. (canceled) ### Claim 14 A mouthpiece for attachment to a hollow tubular filter portion of an aerosol-generating article, the mouthpiece comprising: an inner tubular section having a minimum outer diameter, which is smaller than an inner diameter of the hollow tubular filter portion of the aerosol-generating article; an outer tubular section having a maximum inner diameter, which is larger than an outer diameter of the aerosol-generating article; a central airflow channel arranged along a longitudinal axis of the mouthpiece, wherein the airflow channel comprises a Venturi portion, wherein the Venturi portion comprises an inlet portion and an outlet portion, wherein the inlet portion is configured to converge in a downstream direction and the outlet portion is configured to diverge in a downstream direction; and a hinge section configured to attach the mouthpiece to an aerosol-generating device. ### Claim 15 (depends on 14) The mouthpiece according to claim 14, wherein the Venturi portion further comprises a central portion. ### Claim 16 (depends on 14) The mouthpiece according to claim 14, further comprising a stop arranged connecting the inner tubular section and the outer tubular section. ### Claim 17 (depends on 16) The mouthpiece according to claim 16, wherein the stop is configured to enable a maximum insertion of the inner tubular section of the mouthpiece into the hollow tubular filter portion of the aerosol-generating article of 6 millimeters. ### Claim 18 (depends on 16) The mouthpiece according to claim 16, wherein the stop is configured to enable a maximum insertion of the inner tubular section of the mouthpiece into the hollow tubular filter portion of the aerosol-generating article of around 4 millimeters. ### Claim 19 (depends on 14) The mouthpiece according to claim 14, wherein the inner tubular section has an outer diameter of between 3 millimeters and 5 millimeters. ### Claim 20 (depends on 14) The mouthpiece according to claim 14, wherein the inner tubular section has an outer diameter of around 4 millimeters. ### Claim 21 (depends on 14) The mouthpiece according to claim 14, wherein the outer tubular section has an inner diameter of between 5 millimeters and 8 millimeters. ### Claim 22 (depends on 14) The mouthpiece according to claim 14, wherein the outer tubular section has an inner diameter of around 6.3 millimeters. ### Claim 23 (depends on 14) The mouthpiece according to claim 14, wherein the inner tubular section comprises an upstream end, and wherein the outer circumference of the upstream end of the inner tubular section is rounded. ### Claim 24 (depends on 14) The mouthpiece according to claim 14, wherein the outer tubular section comprises an upstream end, and wherein the inner circumference of the upstream end of the outer tubular section is tapered. ### Claim 25 (depends on 14) The mouthpiece according to claim 14, wherein the outer circumference of the inner tubular section is conical, and wherein the outer diameter of the inner tubular section increases towards a downstream direction. ### Claim 26 (depends on 14) The mouthpiece according to claim 14, wherein the inner circumference of the outer tubular section is conical, and wherein the inner diameter of the outer tubular section decreases towards a downstream direction. ### Claim 27 (depends on 14) The mouthpiece according to claim 14, wherein the inner tubular section and the outer tubular section of the mouthpiece are configured to form a tubular slot between the inner tubular section and the outer tubular section, and wherein the tubular slot is configured to securely receive and hold the hollow tubular filter portion of the aerosol-generating article. ### Claim 28 (depends on 14) A system comprising a mouthpiece according to claim 14 and an aerosol-generating article, wherein the aerosol-generating article comprises a substrate portion containing aerosol-forming substrate and a hollow tubular filter portion, wherein a minimum outer diameter of the inner tubular section of the mouthpiece is smaller than an inner diameter of the hollow tubular filter portion of the aerosol-generating article, and wherein a maximum inner diameter of the outer tubular section of the mouthpiece is larger than an outer diameter of the aerosol-generating article. ### Claim 29 (depends on 14) A method for attaching a mouthpiece to a hollow tubular filter portion of an aerosol-generating article, the method comprising: providing a mouthpiece according to claim 14; providing the aerosol-generating article comprising a substrate portion containing aerosol-forming substrate and the hollow tubular filter portion; and attaching the mouthpiece to the hollow tubular filter portion of the aerosol-generating article by inserting the inner tubular section of the mouthpiece into the hollow tubular filter portion of the aerosol-generating article.