(19)
(11) EP 1 531 307 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.07.2009 Bulletin 2009/30

(43) Date of publication A2:
18.05.2005 Bulletin 2005/20

(21) Application number: 04256977.2

(22) Date of filing: 10.11.2004
(51) International Patent Classification (IPC): 
F24F 7/013(2006.01)
 F04D 25/14(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK YU

(30) Priority: 11.11.2003 GB 0326254

(71) Applicant: Airflow Developments Limited
High Wycombe HP12 3QP, Buckinghamshire (GB)

(72) Inventors:
  • Blackburn, Brian
    High Wycombe HP15 6SR, Buckinghamshire (GB)
  • Matthews, Geoffrey
    Chinnor, Oxford OX39 4AE (GB)
  • Hamshere, Andrew
    Aylesbury HO21 9WX, Buckinghamshire (GB)
  • Stone, Joseph
    High Wycombe HP13 5LA, Buckinghamshire (GB)
  • Bishop. Oliver
    Liss GU33 6DD, Hampshire (GB)
  • Forges, Andrew
    Angmering BN16 4LB, West Sussex (GB)

(74) Representative: Lamb, Martin John Carstairs 
Marks & Clerk LLP 90 Long Acre
London WC2E 9RA
London WC2E 9RA (GB)

   


(54) Ventilation device


(57) 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.







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