(19)
(11) EP 0 945 560 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.11.2000 Bulletin 2000/44

(43) Date of publication A2:
29.09.1999 Bulletin 1999/39

(21) Application number: 99105618.5

(22) Date of filing: 19.03.1999
(51) International Patent Classification (IPC)7: E04D 1/30, F24F 7/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 21.03.1998 GB 9805974

(71) Applicant: Lafarge Braas Research & Development Ltd.
Horsham RH12 4QG, West Sussex (GB)

(72) Inventors:
  • Pestell, Claire Louise
    Broadbridge Heath, West Sussex RH12 3NQ (GB)
  • Payne, Simon Robert
    Felbridge, West Sussex RH19 2SF (GB)

(74) Representative: Brüning, Rolf, Dr.rer.nat. 
c/o Lafarge Braas GmbH, Intellectual Property Department, Rembrücker Strasse 50
63147 Heusenstamm
63147 Heusenstamm (DE)

   


(54) Roof ventilator


(57) A covert roof ventilator unit (10) is manufactured as a planar or substantially planar configuration, having a lower wall (13) and an upper wall (52) hingedly connected thereto which upper wall (52), when the unit (10) is in use on a roof is closed upon the lower wall (13) to form a hollow ventilator having an aperture (24) in said lower wall (13) for ventilating a roof space on which the unit (10) is used, said walls when closed together defined an elongate aperture (82) at a toe end portion of the unit (10). Baffle elements (32, 54) provided on the said walls (13, 52) intermesh in use to prevent the ingress of small birds, mammals and large insects to the roof space via the elongate aperture (82) and the aperture (24) in said lower wall (13).






Search report