(19)
(11) EP 2 025 850 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.02.2013 Bulletin 2013/08

(43) Date of publication A2:
18.02.2009 Bulletin 2009/08

(21) Application number: 08425495.2

(22) Date of filing: 23.07.2008
(51) International Patent Classification (IPC): 
E05F 15/08(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 MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 13.08.2007 IT VI20070237

(71) Applicant: Campisa S.r.l.
20030 Palazzolo Milanese (MI) (IT)

(72) Inventor:
  • Nelzi, Giampaolo
    20030 Palazzolo Milanese (MI) (IT)

(74) Representative: Santi, Filippo et al
Barzano' & Zanardo Roma S.p.A. Via Piemonte 26
00187 Roma
00187 Roma (IT)

   


(54) High safety hydraulic device for the operation of sectional overhead doors


(57) A high safety hydraulic device for the operation of sectional overhead doors (POR), of the type comprising at least one hydraulic cylinder (CI), connected to at least one hydraulic circuit (MI), which allows the opening or closing of the overhead door (POR), through an electro-hydraulic motor (M), suitable for operating at least one pump for the circulation of a fluid within at least one pipe (TU) of the hydraulic circuit (MI); in particular, between the hydraulic cylinder (CI) and the discharge tank (SC) placed downstream the motor (M), is provided at least one first solenoid valve (VA), normally closed, placed at the outlet of the hydraulic cylinder (CI) and preferably integral with it, and a second solenoid valve (NS), normally closed, placed between the pipe (TU) and the discharge tank (SC).







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Search report