# US 8,784,049 B2 · Fan > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,049 B2 - Document ID: US8784049B2 - Status: Granted - Kind: B2 - Application number: 13/874,124 - Filed: 2013-04-30 - Published: 2013-11-07 - Granted: 2014-07-22 - Earliest claimed: 2009-03-04 - Assignees: Dyson Technology Limited - Applicants: Dyson Technology Limited - Inventors: Peter David Gammack; James Dyson - Web page: https://patentgrep.com/patent/US8784049B2 ## CPC - F04D 29/44: Fluid-guiding means, e.g. diffusers - F04D 25/10: the unit having provisions for automatically changing direction of output air - F04D 29/403: {especially adapted for elastic fluid pumps} - F04F 5/16: displacing elastic fluids - F24F 7/065: {fan combined with single duct; mounting arrangements of a fan in a duct} - F24F 13/32: Supports for air-conditioning, air-humidification or ventilation units - F24F 2221/28: using the Coanda effect - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F04F: PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED {(evacuating by sorption F04B)}; SIPHONS {(conveying materials in bulk by flows of gas, liquid of foam B65G53/00)} - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) ## Abstract A floor standing pedestal fan for creating an air current includes a base housing an impeller and a motor for rotating the impeller to create an air flow, an air outlet, and a telescopic duct for conveying the air flow to the air outlet. ## Claims ### Claim 1 A fan assembly comprising a nozzle mounted on a pedestal, the pedestal comprising a device for creating an air flow and a telescopic duct for supporting the nozzle and for conveying the air flow to the nozzle, the nozzle comprising a mouth for emitting the air flow, the nozzle extending about an opening through which air from outside the nozzle is drawn by the air flow emitted from the mouth, wherein the pedestal comprises a base housing said device for creating an air flow, the duct extending between the base and the air outlet. ### Claim 2 (depends on 1) The fan assembly of claim 1, wherein the device for creating an air flow comprises an impeller and a motor for rotating the impeller. ### Claim 3 (depends on 1) The fan assembly of claim 1, wherein the duct comprises a base and a plurality of tubular members connected to the base of the duct, and wherein the base of the duct is connected to the base of the pedestal. ### Claim 4 (depends on 1) The fan assembly of claim 1, wherein the duct comprises a base and a plurality of tubular members connected to the base. ### Claim 5 (depends on 4) The fan assembly of claim 4, wherein the base comprises an air pipe located within one of the plurality of tubular members. ### Claim 6 (depends on 4) The fan assembly of claim 4, wherein the pedestal comprises a plurality of guide vanes located between the nozzle and the device for creating an air flow. ### Claim 7 (depends on 6) The fan assembly of claim 6, wherein the pedestal comprises an air guiding member, and wherein the vanes are located on an internal surface of the air guiding member. ### Claim 8 (depends on 6) The fan assembly of claim 6, wherein the vanes are located at least partially within the base. ### Claim 9 (depends on 4) The fan assembly of claim 4, comprising a plurality of vanes located at least partially within the duct. ### Claim 10 (depends on 9) The fan assembly of claim 9, wherein the plurality of vanes is located at least partially within one of the tubular members of the duct. ### Claim 11 (depends on 9) The fan assembly of claim 9, wherein the plurality of vanes defines a plurality of longitudinal channels within the duct. ### Claim 12 (depends on 1) The fan assembly of claim 1, wherein the nozzle comprises an interior passage for receiving the air flow from the duct and for conveying the air flow to the mouth. ### Claim 13 (depends on 12) The fan assembly of claim 12, wherein the interior passage is shaped to divide the received air flow into two air streams each flowing along a respective side of the opening. ### Claim 14 (depends on 12) The fan assembly of claim 12, wherein the interior passage is substantially annular. ### Claim 15 (depends on 1) The fan assembly of claim 1, wherein the mouth extends about the opening. ### Claim 16 (depends on 1) The fan assembly of claim 1, wherein the nozzle is pivotable relative to the duct. ### Claim 17 (depends on 1) The fan assembly of claim 1, wherein the nozzle is pivotable relative to the duct about an axis passing through the duct. ### Claim 18 A fan assembly comprising a nozzle mounted on a pedestal, the pedestal comprising a device for creating an air flow and a telescopic duct for supporting the nozzle and for conveying the air flow to the nozzle, the nozzle comprising a mouth for emitting the air flow, the nozzle extending about an opening through which air from outside the nozzle is drawn by the air flow emitted from the mouth, wherein the nozzle comprises an interior passage for receiving the air flow from the duct and for conveying the air flow to the mouth. ### Claim 19 (depends on 18) The fan assembly of claim 18, wherein the interior passage is shaped to divide the received air flow into two air streams each flowing along a respective side of the opening. ### Claim 20 (depends on 18) The fan assembly of claim 18, wherein the interior passage is substantially annular. ### Claim 21 (depends on 18) The fan assembly of claim 18, wherein the mouth extends about the opening. ### Claim 22 (depends on 18) The fan assembly of claim 18, wherein the duct comprises a base and a plurality of tubular members connected to the base of the duct, and wherein the base of the duct is connected to the base of the pedestal. ### Claim 23 (depends on 18) The fan assembly of claim 18, wherein the pedestal comprises a plurality of guide vanes located between the nozzle and the device for creating an air flow. ### Claim 24 (depends on 23) The fan assembly of claim 23, wherein the pedestal comprises an air guiding member, and wherein the vanes are located on an internal surface of the air guiding member. ### Claim 25 (depends on 21) The fan assembly of claim 21, wherein the pedestal comprises a plurality of guide vanes located between the nozzle and the device for creating an air flow. ### Claim 26 (depends on 25) The fan assembly of claim 25, wherein the vanes are located at least partially within the base. ### Claim 27 (depends on 18) The fan assembly of claim 18, wherein the nozzle is pivotable relative to the duct. ### Claim 28 A fan assembly comprising a nozzle mounted on a pedestal, the pedestal comprising a device for creating an air flow and a telescopic duct for supporting the nozzle and for conveying the air flow to the nozzle, the nozzle comprising a mouth for emitting the air flow, the nozzle extending about an opening through which air from outside the nozzle is drawn by the air flow emitted from the mouth, wherein the nozzle is pivotable relative to the duct. ### Claim 29 (depends on 28) The fan assembly of claim 28, wherein the duct comprises a base and a plurality of tubular members connected to the base of the duct, and wherein the base of the duct is connected to the base of the pedestal. ### Claim 30 (depends on 28) The fan assembly of claim 28, wherein the pedestal comprises a plurality of guide vanes located between the nozzle and the device for creating an air flow. ### Claim 31 (depends on 30) The fan assembly of claim 30, wherein the pedestal comprises an air guiding member, and wherein the vanes are located on an internal surface of the air guiding member. ### Claim 32 (depends on 29) The fan assembly of claim 29, wherein the pedestal comprises a plurality of guide vanes located between the nozzle and the device for creating an air flow. ### Claim 33 (depends on 32) The fan assembly of claim 32, wherein the vanes are located at least partially within the base.