(19)
(11) EP 0 343 766 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.04.1990 Bulletin 1990/16

(43) Date of publication A2:
29.11.1989 Bulletin 1989/48

(21) Application number: 89301991.9

(22) Date of filing: 28.02.1989
(51) International Patent Classification (IPC)4: A62C 3/14
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 27.05.1988 DE 3818002

(71) Applicants:
  • COLT INTERNATIONAL HOLDINGS A.G.
    CH-6300 Zug (CH)

    BE CH DE FR IT LI LU NL SE AT 
  • COLT INTERNATIONAL LIMITED
    Havant Hampshire PO9 2LY (GB)

    GB 

(72) Inventor:
  • Husges, Hans Dieter
    D-4190 Kleve 1 (DE)

(74) Representative: Slight, Geoffrey Charles et al
Graham Watt & Co. Riverhead
Sevenoaks Kent TN13 2BN
Sevenoaks Kent TN13 2BN (GB)


(56) References cited: : 
   
       


    (54) Device for the preferably pneumatic automatic actuation of ventilation flaps in particular


    (57) The device (1) has a locking unit (4) which holds one or more piercing pistons (3) of an energy-­carrying unit (6) in their locked position. The device comprises a thermofuse arrangement (8, 9, 8) which breaks when a critical temperature is exceeded, and which is supported, at one end, on a longitudinally movable locking rod member (5) which is in operational communication with the piercing piston (3). The individual fuse elements (8, 9) optimize the operational reliability of the device. The fuse elements are arranged in parallel rather than in series in a further embodiment.







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