EP 1522730 B1 20071121 - Gear pump with integrated control valve
Title (en)
Gear pump with integrated control valve
Title (de)
Zahnradpumpe mit integriertem Steuerventil
Title (fr)
Pompe à engrenages avec valve de contrôle intégrée
Publication
Application
Priority
AT 15942003 A 20031009
Abstract (en)
[origin: EP1522730A1] Rotary piston machine (1), especially a gear pump, comprises at least one first conveying wheel (3) connected to a drive shaft (5), and at least one second conveying wheel (4) rotatably mounted on an axle (6) and driven by the first conveying wheel. The conveying wheels are rotatably arranged in the conveying chamber (20) of a pump housing (2). The pump also comprises a control valve (7) for pressure-side shut-off of part of the conveying medium. The control valve is formed by the axle. The axle is mounted in the pump housing so that it can be displaced in an axial direction and forms a control piston.
IPC 8 full level
F04C 2/18 (2006.01); F04C 14/26 (2006.01); F04C 2/08 (2006.01)
CPC (source: EP)
F04C 2/18 (2013.01); F04C 14/26 (2013.01); F04C 2/084 (2013.01); F04C 2270/20 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1522730 A1 20050413; EP 1522730 B1 20071121; AT 413235 B 20051215; AT A15942003 A 20050515; DE 50308658 D1 20080103
DOCDB simple family (application)
EP 03450286 A 20031223; AT 15942003 A 20031009; DE 50308658 T 20031223