(19)
(11) EP 0 154 089 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.08.1986 Bulletin 1986/34

(43) Date of publication A2:
11.09.1985 Bulletin 1985/37

(21) Application number: 84308474

(22) Date of filing: 06.12.1984
(84) Designated Contracting States:
BE CH DE FR IT LI NL SE

(30) Priority: 07.12.1983 GB 8332651

(71) Applicants:
  • Haslam, George Gilbert
     ()
  • Preston, Neville
     ()

(72) Inventor:
  • Preston, Neville
     ()

   


(54) Damper


(57) Control apparatus such as a fire damper or duct damper consisting of a housing having a series of blades pivotally mounted therein and extending transversely across the housing. Each blade has a gear pinion drivably connected thereto which engages in mesh with gear teeth of a rack formed on an operating member which is linearly slidable to effect pivotal movement of the blades so as to open or close the fire damper or duct damper.






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