# US 10,307,029 B2 · Vacuum cleaner having a filter assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,307,029 B2 - Document ID: US10307029B2 - Status: Granted - Kind: B2 - Application number: 15/464,718 - Filed: 2017-03-21 - Published: 2017-09-21 - Granted: 2019-06-04 - Earliest claimed: 2016-03-21 - Assignees: Dyson Technology Limited - Applicants: Dyson Technology Limited - Inventors: Rowan John Sharpley; Michael Philip Day; Glyn Geoffrey Rees-Jones - Web page: https://patentgrep.com/patent/US10307029B2 ## CPC - A47L 9/12: Dry filters - A47L 9/0081: {Means for exhaust-air diffusion; Means for sound or vibration damping} - A47L 9/122: {flat} - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/521: {using folded, pleated material} - B01D 2279/55: for cleaning appliances, e.g. suction cleaners - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) - 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 vacuum cleaner that includes a suction motor and a filter assembly. The filter assembly surrounds at least part of the suction motor and has a frame to which a filter medium is attached. The filter medium is spaced from a wall of the frame such that an arcuate passageway is defined between the filter medium and the frame. A part of the air expelled by the suction motor enters a first end of the passageway and moves around the passageway in a clockwise direction. A further part of the air expelled by the suction motor enters a second end of the passageway and moves around the passageway in a counter-clockwise direction. Air within the passageway then passes through the filter medium. ## Claims ### Claim 1 A vacuum cleaner comprising a suction motor and a filter assembly, wherein the filter assembly surrounds at least part of the suction motor and comprises a frame to which a filter medium is attached, the filter medium is spaced from a wall of the frame such that an arcuate passageway is defined between the filter medium and the frame, a part of air expelled by the suction motor enters a first end of the passageway and moves around the passageway in a clockwise direction, a further part of air expelled by the suction motor enters a second end of the passageway and moves around the passageway in a counter-clockwise direction, and air within the passageway passes through the filter medium. ### Claim 2 (depends on 1) The vacuum cleaner of claim 1, wherein a size of the passageway at each end of the passageway is greater than that at a midpoint of the passageway. ### Claim 3 (depends on 2) The vacuum cleaner of claim 2, wherein a width of the passageway at each end of the passageway is greater than that at the midpoint of the passageway. ### Claim 4 (depends on 1) The vacuum cleaner of claim 1, wherein a size of the passageway decreases progressively from each end of the passageway to a midpoint of the passageway. ### Claim 5 (depends on 4) The vacuum cleaner of claim 4, wherein a width of the passageway decreases progressively from each end of the passageway to the midpoint of the passageway. ### Claim 6 (depends on 1) The vacuum cleaner of claim 1, wherein the frame comprises an inlet, a first duct that connects fluidly the inlet to the first end of the passageway, and a second duct that connects fluidly the inlet to the second end of the passageway. ### Claim 7 (depends on 1) The vacuum cleaner of claim 1, wherein air expelled from the suction motor enters the filter assembly in a first direction, and air passes through the filter medium in a second direction normal to the first direction. ### Claim 8 (depends on 1) The vacuum cleaner of claim 1, wherein the vacuum cleaner comprises a cable reel unit that surrounds a lower part of the suction motor, and the filter assembly surrounds an upper part of the suction motor. ### Claim 9 A vacuum cleaner comprising a suction motor and a filter assembly, wherein the filter assembly comprises a frame to which a filter medium is attached, the filter medium is spaced from a wall of the frame such that an arcuate passageway is defined between the filter medium and the frame, a part of air expelled by the suction motor enters a first end of the passageway and moves around the passageway in a clockwise direction, a further part of air expelled by the suction motor enters a second end of the passageway and moves around the passageway in a counter-clockwise direction, the size of the passageway decreases progressively from each end of the passageway to a midpoint of the passageway, and air within the passageway passes through the filter medium. ### Claim 10 A vacuum cleaner comprising a suction motor and a filter assembly, wherein: the filter assembly surrounds at least part of the suction motor and comprises a frame to which a filter medium is attached; the filter medium is spaced from a wall of the frame such that an arcuate passageway is defined between the filter medium and the frame; the frame comprises an inlet, a first duct that connects fluidly the inlet to a first end of the passageway, and a second duct that connects fluidly the inlet to a second end of the passageway; air expelled by the suction motor enters the inlet and divides with a first part of the air passing through the first duct and a second part of the air passing through the second duct; the first part of the air enters the first end of the passageway and moves around the passageway in a clockwise direction; the second part of the air enters the second end of the passageway and moves around the passageway in a counter-clockwise direction; and air within the passageway passes through the filter medium.