(19)
(11) EP 2 607 281 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.08.2014 Bulletin 2014/35

(43) Date of publication A2:
26.06.2013 Bulletin 2013/26

(21) Application number: 12196534.7

(22) Date of filing: 11.12.2012
(51) International Patent Classification (IPC): 
B66B 1/24(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 22.12.2011 IT MO20110330

(71) Applicant: Brevini Fluid Power S.P.A.
42100 Reggio Emilia (RE) (IT)

(72) Inventors:
  • Bartoli, Maurizio
    42123 Reggio Emilia (IT)
  • Fasano, Stefano
    42124 Reggio Emilia (IT)

(74) Representative: Villanova, Massimo et al
Luppi Crugnola & Partners S.r.l. Viale Corassori, 54
41124 Modena
41124 Modena (IT)

   


(54) Control device


(57) A control device comprises a hydraulic circuit having a main line (3) that delivers an operating fluid to a single-acting hydraulic actuator (2) that drives a lifting apparatus in which a load-bearing support is connected to the actuator by at least one motion-transmitting member; on the main line a flow control valve, a pressure compensating element (11) and at least one check valve (12) operate to support the motion-transmitting member; the check valve is opened by a pressure signal in the main line; the load-bearing support will advantageously descend at a relatively high speed when unloaded, ensuring reduced pressure loss on the fluid-discharge circuit.







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Search report