EP 0619430 B1 19970723 - Internal gear pump for high rotary speed range
Title (en)
Internal gear pump for high rotary speed range
Title (de)
Innenzahnradpumpe für grossen Drehzahlbereich
Title (fr)
Pompe à engrenage internes pour gamme de vitesses rotatives élévées
Publication
Application
Priority
- DE 4307034 A 19930305
- DE 4330586 A 19930909
Abstract (en)
[origin: US5413470A] In an internal gear pump, which can also be constructed as pump with suction control, to reduce the undesired cavitation effects in the pressure region and to permit the oil to flow off from the diminishing displacement cells between the teeth of the gears, and impedance-controlled overflow passage is provided, the openings of which towards the moving displacement cells are alternately opened and closed by the teeth of at least one of the gears.
IPC 1-7
IPC 8 full level
F04C 2/10 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F04C 15/0049 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
US 5413470 A 19950509; CA 2115795 A1 19940906; CA 2115795 C 20000411; CN 1040352 C 19981021; CN 1103136 A 19950531; EP 0619430 A1 19941012; EP 0619430 B1 19970723; JP 2739034 B2 19980408; JP H06299972 A 19941025
DOCDB simple family (application)
US 20561394 A 19940303; CA 2115795 A 19940216; CN 94102640 A 19940304; EP 93121068 A 19931229; JP 3504194 A 19940304