# US 2006/0199523 A1 · Ventilation device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2006/0199523 A1 - Document ID: US20060199523A1 - Status: Published application - Kind: A1 - Application number: 11/059,180 - Filed: 2005-02-16 - Published: 2006-09-07 - Earliest claimed: 2005-02-16 - Assignees: Airflow Developments Limited - Inventors: Geoffrey Matthews; Andrew Hamshere; Joseph Stone; Oliver Bishop; Andrew Forbes; Brian Blackburn - Web page: https://patentgrep.com/patent/US20060199523A1 ## CPC - F24F 13/065: formed as cylindrical or spherical bodies which are rotatable - F24F 7/065: {fan combined with single duct; mounting arrangements of a fan in a duct} - 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 In order to provide a simple design of ventilation device which has a relatively open aperture of pleasing aesthetic appearance, there is provided a face 2 for facing into a room, the face including an aperture 3. Three closure parts 5 are provided for closing the aperture 3. The closure parts 5 are rotatably mounted adjacent to the aperture 3 about pivots 9 located around the periphery of the aperture. A drive means is provided for moving the closure parts between an open position and a closed position. A suitable fan 6 can be provided for drawing air through the aperture when the closure parts are in the open position. In a first aspect of the invention, the closure parts 5 each comprise closures surfaces having edges, the edges abutting one another in the closed position. In a second aspect of the invention, there is drive member 12 for contacting a drive part 11 of a closure part 5, the drive part 11 being located close to the pivot 9. In a third aspect of the invention, the drive means 12 is configured to act on a drive part 11 of each closure part, the pivot 9 and the drive part 11 being mounted on the same side of the closure part 5. ## Claims ### Claim 1 A ventilation device, having: a face for facing into a room, the face including an aperture having a periphery; at least three closure parts, for closing the aperture, rotatably mounted adjacent to the aperture about pivot points located around the periphery of the aperture, wherein the closure parts each comprise closure surfaces having edges, the edges abutting one another in the closed position, drive means for moving the closure parts between an open position and a closed position, and fan means for driving air through the aperture when the closure parts are in the open position. ### Claim 2 (depends on 1) A ventilation device according to claim 1, comprising at least one drive member for contacting a drive part of a closure part, the drive part being located close to the pivot. ### Claim 3 (depends on 2) A ventilation device according to claim 2, wherein the distance between the pivot and the drive part is less than 50% and preferably less than 25% of a maximum extent of the closure part from the pivot. ### Claim 4 (depends on 2) A ventilation device according to claim 2, wherein the drive member comprises at least a section of an annular member, slidably mounted in an annular track. ### Claim 5 (depends on 1) A ventilation device according to claim 1, wherein the drive means comprises a wax actuator. ### Claim 6 (depends on 1) A ventilation device according to claim 1, wherein the pivot and the drive part are mounted on the same side of the closure part. ### Claim 7 A ventilation device, having: a face for facing into a room, the face including an aperture; at least three closure parts, for closing the aperture, rotatably mounted adjacent to the aperture about pivot points located around the periphery of the aperture, drive means for moving the closure parts between an open position and a closed position, the drive means comprising at least one drive member for contacting a drive part of a closure part, the drive part being located close to the pivot, and fan means for driving air through the aperture when the closure parts are in the open position. ### Claim 8 (depends on 7) A ventilation device according to claim 7, wherein the pivot and drive part are mounted on the same side of the closure part. ### Claim 9 (depends on 8) A ventilation device according to claim 8, wherein the pivot and drive part are mounted on a side of the closure part facing away from the face for facing into the room. ### Claim 10 (depends on 7) A ventilation device according to claim 7, wherein the drive means comprises a wax actuator. ### Claim 11 (depends on 7) A ventilation device according to claim 7, wherein the distance between the pivot and the drive part is less than 50% and preferably less than 25% of a maximum extent of the closure part from the pivot. ### Claim 12 A ventilation device, having: a face for facing into a room, the face including an aperture; at least three closure parts, for closing the aperture, rotatably mounted adjacent to the aperture about pivot points located around the periphery of the aperture, drive means for moving the closure parts between an open position and a closed position, the drive means comprising at least one drive member for contacting a drive part of a closure part, the drive part being located close to the pivot, and fan means for driving air through the aperture when the closure parts are in the open position. ### Claim 13 (depends on 12) A ventilation device according to claim 12, wherein the pivot and the drive part are mounted on the side of the closure part facing away from a face for facing into the room.