Monolithic step made of reinforced concrete for helical staircases, and helical staircase provided therewith

(19)

(11)

EP 0 937 839 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	13.10.1999 Bulletin 1999/41

(43)	Date of publication A2:
	25.08.1999 Bulletin 1999/34

(21)	Application number: 98122414.0

(22)	Date of filing: 26.11.1998

(51)	International Patent Classification (IPC)⁶: E04F 11/02

(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:

24.02.1998 IT VR980012

(71)	Applicant: L'Elicoidale S.n.c. di Zandonà R. e Bicego D.
	37030 Mezzane Di Sopra (VR) (IT)

(72)	Inventors:
	Zandona', Renzo 37030 Mezzane Di Sopra (VR) (IT) Bicego, Domenico 37030 San Mauro Di Saline (IT)

(74)	Representative: Petraz, Gilberto Luigi et al
	GLP S.r.l. Piazzale Cavedalis 6/2 33100 Udine 33100 Udine (IT)

(54)	Monolithic step made of reinforced concrete for helical staircases, and helical staircase provided therewith

(57) Monolithic helical step (10) made of reinforced concrete, suitable for obtaining helical staircases, in the proximity of the internal side surface (11) of which a through hole (12), which is located parallel to the tread plane (18), is suitably positioned to receive a concrete or resin casting inside it and a falsework member (13) by means of which the connection of a plurality of superimposed steps (10) is assured.

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