# US 12,179,229 B2 · Nozzle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,179,229 B2 - Document ID: US12179229B2 - Status: Granted - Kind: B2 - Application number: 17/295,746 - Filed: 2019-11-04 - Published: 2022-01-20 - Granted: 2024-12-31 - Earliest claimed: 2018-11-22 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Guohua Liu - Web page: https://patentgrep.com/patent/US12179229B2 ## CPC - B05C 5/0225: {characterised by flow controlling means, e.g. valves, located proximate the outlet (B05C5/0258, B05C5/0275 take precedence; supply valves upstream the coating head B05C11/1036)} - B05B 7/0815: {with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter} - B05C 5/0212: {only at particular parts of the articles (at particular part of web, band, strip, belt or ribbon B05C5/025)} - B05C 11/1034: {specially designed for conducting intermittent application of small quantities, e.g. drops, of coating material (B05C5/0225, B05C11/1026 take precedence)} - B23K 3/0638: {for viscous material feeding, e.g. solder paste feeding (B23K3/0623 takes precedence)} - G01F 11/021: {of the piston type (G01F11/04 takes precedence)} - G01F 11/28: with stationary measuring chambers having constant volume during measurement - B05B 1/083: {the pulsating mechanism comprising movable parts} - H05K 3/1241: {by ink-jet printing or drawing by dispensing} - B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08) - 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) - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A nozzle includes a nozzle passage and a fluid passage. The nozzle passage has an airflow inlet and an airflow outlet. The fluid passage has a fluid passage inlet and a fluid passage outlet. The fluid passage inlet communicates with a fluid source so that a fluid can enter the fluid passage, and the fluid passage outlet communicates with the nozzle passage so that the fluid can enter the nozzle passage, and the airflow exerted from the airflow inlet can press the fluid in the nozzle passage out of the airflow outlet. The nozzle provided by the present application can distribute a small volume of a viscous fluid and is not apt to get blocked. ## Claims ### Claim 1 A nozzle, comprising: a nozzle passage, the nozzle passage having an airflow inlet and an airflow outlet, and a fluid passage, the fluid passage having a fluid passage inlet and a fluid passage outlet, wherein the fluid passage inlet communicates with a fluid source so that a fluid can enter the fluid passage, and the fluid passage outlet communicates with the nozzle passage so that the fluid can enter the nozzle passage, wherein airflow exerted from the airflow inlet can press the fluid in the nozzle passage out of the airflow outlet, wherein the nozzle further comprises a piston chamber, the piston chamber being used to accommodate a piston and the piston chamber communicating with the airflow inlet of the nozzle passage; and wherein the piston chamber and the fluid passage are separately arranged. ### Claim 2 (depends on 1) The nozzle as claimed in claim 1, wherein: the nozzle passage further has a fluid inlet, and the fluid passage outlet communicates with the fluid inlet of the nozzle passage so that the fluid can enter the nozzle passage. ### Claim 3 (depends on 1) The nozzle as claimed in claim 1, wherein: the fluid is a viscous fluid and the viscosity of the fluid ranges from 1000 cps to 150,000 cps. ### Claim 4 (depends on 1) The nozzle as claimed in claim 1, wherein: a bottom of the piston chamber is in the shape of a smoothly-transitioned curved surface. ### Claim 5 (depends on 1) The nozzle as claimed in claim 1, wherein: the airflow inlet is located below the piston chamber. ### Claim 6 (depends on 1) The nozzle as claimed in claim 1, wherein: the fluid passage inlet is arranged on the side wall of the nozzle. ### Claim 7 (depends on 1) The nozzle as claimed in claim 1, wherein: the fluid passage extends aslant downward from the fluid passage inlet to the fluid passage outlet. ### Claim 8 (depends on 1) The nozzle as claimed in claim 1, wherein: the nozzle passage has an upper nozzle passage section and a lower nozzle passage section, and the lower nozzle passage section is thinner than the upper nozzle passage section, wherein the upper nozzle passage section communicates with the airflow inlet. ### Claim 9 A nozzle assembly, comprising: a casing, a chamber being arranged in the casing, a sleeve, the sleeve being arranged in the chamber of the casing, the inner wall of the sleeve defining a piston passage, and a fluid chamber being arranged between the outer wall of the sleeve and the inner wall of the casing, a nozzle, the nozzle being arranged in the chamber of the casing and being arranged below the sleeve, the nozzle comprising: a nozzle passage, the nozzle passage having an airflow inlet and an airflow outlet, a fluid passage, the fluid passage having a fluid passage inlet and a fluid passage outlet, wherein the fluid passage inlet communicates with the fluid chamber so that a fluid in the fluid chamber can enter the fluid passage, and the fluid passage outlet communicates with the nozzle passage so that the fluid can enter the nozzle passage, a piston chamber, the piston chamber communicating with the airflow inlet of the nozzle passage and communicating with the piston passage, and a piston, the piston being able to move up and down in the piston passage and the piston chamber and being able to draw in and discharge air through the nozzle passage to press the fluid in the nozzle passage out of the airflow outlet of the nozzle passage. ### Claim 10 (depends on 9) The nozzle assembly as claimed in claim 9, wherein the piston has a head portion, the shape of the head portion is configured to match the shape of the piston chamber of the nozzle so that the piston can draw in and discharge air through the nozzle passage when reciprocating relative to the nozzle. ### Claim 11 (depends on 9) The nozzle assembly as claimed in claim 9, wherein: the casing has an inlet and the inlet communicates with the fluid chamber. ### Claim 12 (depends on 9) The nozzle assembly as claimed in claim 9, wherein: the sleeve is seal-connected to the nozzle and the sleeve is seal-connected to the casing. ### Claim 13 (depends on 9) The nozzle assembly as claimed in claim 9, wherein: the nozzle is seal-connected to the casing.