# US 2023/0066089 A1 · Dust mitigation system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0066089 A1 - Document ID: US20230066089A1 - Status: Published application - Kind: A1 - Application number: 17/673,887 - Filed: 2022-02-17 - Published: 2023-03-02 - Earliest claimed: 2021-08-24 - Assignees: Fanca Technologies Pty Ltd - Applicants: Fanca Technologies Pty Ltd - Inventors: Andrew Fanning - Web page: https://patentgrep.com/patent/US20230066089A1 ## CPC - E01H 1/0845: {with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers (brushing installations per se E01H1/02; other loosening devices per se E01H1/105)} - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/0043: {containing fixed gas displacement elements or cores} - B01D 46/16: arranged on non-filtering conveyors {or supports} - B01D 46/2403: {characterised by the physical shape or structure of the filtering element} - B01D 46/76: involving vibrations - B01D 2267/40: Different types of filters - B01D 2271/02: Gaskets, sealings - B01D 2273/30: Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan - B01D 2279/40: for cleaning of environmental air, e.g. by filters installed on vehicles or on streets - E01H: STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING {OR PREVENTING} FOG IN GENERAL {CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS}(cleaning in general B08B) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A dust mitigation system for a mobile sweeper, the dust mitigation system including a cover to at least partially cover one or more brushes of the mobile sweeper, a dust collector including at least one fan and one or more filters, and at least one duct fluidly connecting the cover with the dust collector. ## Claims ### Claim 1 A dust mitigation system for a mobile sweeper, the dust mitigation system including a cover to at least partially cover one or more brushes of the mobile sweeper; a dust collector including: at least one fan; and one or more filters; and at least one duct fluidly connecting the cover with the dust collector. ### Claim 2 (depends on 1) A dust mitigation system as claimed in claim 1, further including at least one separator for separating dust and/or debris from air, the separator including: a one or more blades to move the air through the separator; and a pre-filter located at least partially around the one or more blades, the pre-filter having a plurality of openings to enable dust and/or debris below a predetermined size to pass through the plurality of openings, and an exhaust aperture for larger particles to exit the pre-filter, the pre-filter tapered from an inlet of the pre-filter to the exhaust aperture. ### Claim 3 (depends on 2) A dust mitigation system as claimed in claim 2, wherein the at least one separator is two separators. ### Claim 4 (depends on 2) A dust mitigation system as claimed in claim 2, wherein each separator includes a motor to drive the one or more blades. ### Claim 5 (depends on 4) A dust mitigation system as claimed in claim 4, wherein each separator includes a clutch to disengage the one or more blades relative to the motor. ### Claim 6 (depends on 5) A dust mitigation system as claimed in claim 5, wherein the clutch is a magnetic clutch. ### Claim 7 (depends on 4) A dust mitigation system as claimed in claim 4 wherein the motor is adapted to act as a clutch, enabling the one or more blades to spin without powering the motor. ### Claim 8 (depends on 1) A dust mitigation system as claimed in claim 1, further wherein the one or more filters is a panel filter mounted to a part of the dust collector by one or more resilient or elastic members adapted to enable movement during operation of the dust mitigation system to shake the filter to dislodge any dust or debris that may be stuck in or blocking the filter. ### Claim 9 (depends on 1) A dust mitigation system as claimed in claim 1, wherein the at least one duct is two ducts. ### Claim 10 (depends on 2) A dust mitigation system as claimed in claim 2, wherein the pre-filter is mounted to a portion of the separator by one or more resilient or elastic members adapted to enable movement during operation of the separator to shake the pre-filter to dislodge any dust or debris that may be stuck in or blocking the plurality of openings. ### Claim 11 (depends on 10) A dust mitigation system as claimed in claim 10, wherein the one or more resilient or elastic members are one or more springs. ### Claim 12 (depends on 1) A dust mitigation system as claimed in claim 1, wherein each of the one or more filters is a panel filter, each panel filter having a filter; a frame surrounding the filter; one or more resilient or elastic members to mount the frame to a dust collector, wherein the one or more resilient or elastic members are adapted to enable movement during operation of the dust collector to shake the filter to dislodge any dust or debris that may be stuck in or blocking the filter. ### Claim 13 (depends on 12) A dust mitigation system as claimed in claim 12, wherein the one or more resilient or elastic members are one or more springs. ### Claim 14 (depends on 1) A mobile sweeper including a dust mitigation system as claimed in claim 1. ### Claim 15 A separator for separating dust and/or debris from air, the separator including: a one or more blades to move air through the separator; and a pre-filter located at least partially around the one or more blades, the pre-filter having a plurality of openings to enable dust and/or debris below a predetermined size to pass through the plurality of openings, and an exhaust aperture for larger particles to exit the pre-filter, the pre-filter tapered from an inlet of the pre-filter to the exhaust aperture. ### Claim 16 (depends on 15) A separator as claimed in claim 15, wherein the pre-filter is mounted to a portion of the separator by one or more resilient or elastic members adapted to enable movement during operation of the separator to shake the pre-filter to dislodge any dust or debris that may be stuck in or blocking the plurality of openings. ### Claim 17 A panel filter for filtering dust or debris from air, the panel filter having a filter; a frame surrounding the filter; one or more resilient or elastic members to mount the frame to a dust collector, wherein the one or more resilient or elastic members are adapted to enable movement during operation of the dust collector to shake the filter to dislodge any dust or debris that may be stuck in or blocking the filter. ### Claim 18 (depends on 17) A panel filter as claimed in claim 17, wherein the filter includes one or more seals to seal against a portion of the dust collector to ensure that the air passes through the filter. ### Claim 19 A method of filtering air, including the steps of: sweeping a ground surface with a mobile sweeper; moving air with swept dust and/or debris through at least one separator having a pre-filter to separate different sized dust and/or debris; moving the air through a filter to filter the air; and shaking the pre-filter and the filter to dislodge dust and/or debris such that the dust and debris can fall into a hopper. ### Claim 20 (depends on 19) A method as claimed in claim 19, wherein the air is moved by at least one fan, and the at least one separator includes one or more blades to move air through the separator.