EP 2325499 A1 20110525 - A pressure balancing valve for two cylinders operated in parallel
Title (en)
A pressure balancing valve for two cylinders operated in parallel
Title (de)
Druckentlastungsventil für zwei parallel funktionierende Zylinder
Title (fr)
Vanne équilibrée de pression pour deux cylindres fonctionnant en parallèle
Publication
Application
Priority
EP 09425475 A 20091119
Abstract (en)
A pressure balancing valve for two cylinders operated in parallel, comprising: a main conduit (21, 22) predisposed to be connected to a first cylinder (31) and to connect to a balancing conduit (40) connected to a second cylinder (32); an obturator (3), interposed between a first tract (21) and a second tract (22) of the main conduit (21, 22), which is mobile between a closed position, in which the first tract and the second tract of the main conduit (21,22) are not in mutual communication and the main conduit (21, 22) is interrupted, and an open position, in which the first tract and the second tract of the main conduit (21, 22) are in mutual communication; thrust means (4), predisposed to push the obturator (3) towards the closed position; piloting means (5, 6), predisposed to push the obturator (3) towards the open position, which comprise a first piloting conduit (5) that places the second tract (22) of the main conduit (21, 22) in communication with a thrust surface of the obturator (3), such that the pressure internally of the tract of the second tract (22) of the main conduit (21, 22) exerts a force which acts on the thrust surface of the obturator (3) in order to push the obturator (3) towards the open position.
IPC 8 full level
F15B 11/16 (2006.01); F15B 13/02 (2006.01)
CPC (source: EP)
E02F 9/2203 (2013.01); E02F 9/226 (2013.01); F15B 13/02 (2013.01); F15B 2211/7128 (2013.01)
Citation (applicant)
US 4682931 A 19870728 - HOUSE MARSHALL K [US]
Citation (search report)
- [XI] US 4682931 A 19870728 - HOUSE MARSHALL K [US]
- [XI] US 6431816 B1 20020813 - JORDAN DEAN CLARK [US], et al
- [X] US 2007017364 A1 20070125 - VENEZIANI LUCIANO [IT]
- [X] US 4080994 A 19780328 - FLASCHAR HEINZ, et al
Designated contracting state (EPC)
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 state (EPC)
AL BA RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 09425475 A 20091119