(19)
(11) EP 0 199 491 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.01.1987 Bulletin 1987/05

(43) Date of publication A2:
29.10.1986 Bulletin 1986/44

(21) Application number: 86302571

(22) Date of filing: 07.04.1986
(84) Designated Contracting States:
BE DE FR IT LU NL SE

(30) Priority: 12.04.1985 GB 8509382

(71) Applicant: Chubb & Son's Lock and Safe Company Limited
 ()

(72) Inventors:
  • Sharp, Michael Francis Warren
     ()
  • Dyson, George William
     ()

   


(54) Fire-resistant enclosures


(57) The apron sections 12 and 14 in the body and door of a data cabinet are made from steel strips having rows of elongate slots 17 running in the circumferential direction of the closure with the slots in adjacent rows displaced in pitch. These slots thus lie across the temperature gradient from the external skins 2/8 to the internal skins 1/7 of the body and door so that the heat conduction pathways across the aprons are long and tortuous, thus reducing the rate of heat inleak to the cabinet while retaining sufficient structural rigidity in the closure region.






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