(19)
(11) EP 2 233 658 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.08.2012 Bulletin 2012/31

(43) Date of publication A2:
29.09.2010 Bulletin 2010/39

(21) Application number: 10157663.5

(22) Date of filing: 24.03.2010
(51) International Patent Classification (IPC): 
E04F 11/06(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 27.03.2009 PL 38761609

(71) Applicant: Fakro PP Spolka Z O.O.
33-300 Nowy Sacz (PL)

(72) Inventors:
  • Kasinski, Bogdan
    34-601, Limanowa (PL)
  • Musial, Henryk
    32-020, Wieliczka (PL)

(74) Representative: Lukaszyk, Szymon et al
Kancelaria Patentowa Lukaszyk ul. Glowackiego 8/6
40-062 Katowice
40-062 Katowice (PL)

   


(54) Scissor-like attic stairs


(57) The pantographs (3a) at their free end are interconnected by a bar (7a), which together with the sill element (9) forms such a kinematic system that turning round the bar (7) pulled at its crank forces the catching element (7a) to turn and to move in relation of the sill element (9), releasing by this the ladder (3) from its lock and enabling to expand the ladder (3). The sill element (9) has in its cross-section parallel to side element of the ladder (3) a triangular profile and has an abutting surface on the side of the hinges connecting the flap (2) with the hatch frame (1), which surface passes arch wise into an adjoining sliding surface forming an acute angle with the surface of the flap (2).







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